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1/3640 NZ : IPRM 2007 : SECTION 3 : INDUSTRIAL GASES

BOC is the leading provider of gases and relatedproducts, services and solutions in the South Pacific.

Offering over 75 industrial gases, more than 150

customised gases and with more than 2 million cylinders

in service, BOC is committed to delivering value and

service to its wide-spread customer base.

BOCs gas expertise is unmatched in the industry and ourcontinued investment in meeting the needs of all industrial

gas users, from the professional tradesman to the largest

industrial manufacturing and processing plants, is reflected

in our wide range of gas products, supply options and

solutions. Our extended network of Gas&Gear centres

and Gas Agents means that no matter where you are,

BOC is there.

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2/3641NZ : IPRM 2007 : SECTION 3 : INDUSTRIAL GASES

Industrial Gases

Air Based Gases 44

Fabrication Gases 50

Shielding Gases 55

Fuel Gases 64

Laser Gases 69

Refrigeration Gases 73

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3 Industrial Gases

42 NZ : IPRM 2007 : SECTION 3 : INDUSTRIAL GASES

BOC Industrial and Refrigeration Gas CylinderColour Identification

Air Based Gases Fabrication Gases Notes

AirIndustrial Grade 108

NitrogenIndustrial Grade 152

OxygenIndustrial Grade 100

ArgonWelding Grade 130

Carbon DioxideIndustrial Grade 169

1. Always identify the contents

of a cylinder by the label.

2.Designated cylindercolours comply with

BS 5252F or AS 4484:2004

2. Numbers in Redare

BOCs Gas Code

3. Cylinder valves not shown

Shielding Gases

ArgoshieldLight500

Universal 501Heavy 502

StainshieldLight503


AlushieldLight506


SpecshieldPlus 509

FCW 512

SpecshieldTIG 510

SpecshieldMulti 511

Fuel Gases

AcetyleneIndustrial Grade 120

AcetyleneInstrument Grade 010

HandigasLPG 170

LPG Forklift 174

Marathon112

Nitrous OxideIndustrial 191

HydrogenIndustrial Grade 141

Laser Gases

Carbon DioxideInstrument Grade 013

HeliumInstrument Grade 014

Zero Grade 023

NitrogenInstrument Grade 016

Zero Grade 025

Lasermix H302

Lasermix N301

Refrigeration Gases

RefrigerantR134a 0155

RefrigerantR22 0158

RefrigerantR404A 0248

RefrigerantR507 0250

AmmoniaRefrigerant R717 178

Class Diamonds

l 1l l

l

FLAMMABLE

GAS

2

l 1

ll l l

OXIDISING

GAS

2

l

l l

TOXIC

GAS

2

ll l

l l

NON-FLAMMABLE

NON-TOXIC

GAS

2

l

l l

The gas contents of BOC cylinders are identified by the labelsaffixed to the shoulder of the cylinders. A cylinder without a labelshould not be used but returned to the supplier. An important

part of that label is the class diamond, which represents thecharacteristic of the gas, as illustrated. A label with multiple

class diamonds indicates multiple associated hazards.

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3Industrial Gases

43NZ : IPRM 2007 : SECTION 3 : INDUSTRIAL GASES

ProductGasCode Page

Air Based Gases

Air Industrial Grade, Compressed 108 45

Nitrogen Industrial Grade, Compressed (N2) 152 47

Nitrogen Laser Grade, Liquid (N2) 152BLK 47

Oxygen Industrial Grade, Compressed (O2) 100 49

Oxygen Industrial Grade, Liquid (O2) 100BLK 49

Fabrication Gases

Argon Welding Grade, Compressed (Ar) 130 51

Argon Welding Grade, Liquid (Ar) 130BLK 51

Carbon Dioxide Industrial Grade, Compressed (CO2) 169 53

Carbon Dioxide Welding Grade, Liquid (CO2) 169BLK 53

Dry Ice Pellets, Solid Carbon Dioxide (CO2) 128 54

Shielding Gases

Shielding Gases Selection Chart

(See also Fabrication Gases)

56

For Carbon and Low Alloys Steel

ArgoshieldLight 500 57

ArgoshieldUniversal 501 58

ArgoshieldHeavy 502 59

For Stainless Steel

StainshieldLight 503 60

StainshieldUniversal 504 60

StainshieldHeavy 505 60

For Aluminium

AlushieldLight 506 61

AlushieldUniversal 507 61

AlushieldHeavy 508 61

For Specialised Processes

SpecshieldPlus 509 62

SpecshieldTIG 510 62

SpecshieldMulti 511 63

SpecshieldFCW 512 63

ProductGasCode Page

Fuel Gases

Acetylene Industrial Grade, Dissolved (C2H2) 120 65

Acetylene Instrument Grade, Dissolved (C2H2) 010 65

Handigas 170 66

Marathon 112 67

HandigasForklift 174 67

Nitrous Oxide Engine BoostingGrade, Compressed (N2O)

191 67

Hydrogen Industrial Grade, Compressed (H2) 141 68

Laser Gases

Lasing Gases

Carbon Dioxide Laser Grade (CO2) 131 70

Helium Instrument Grade (He) 014 70

Helium Zero Grade (He) 023 70

Nitrogen Instrument Grade (N2) 016 71

Nitrogen Zero Grade (N2) 025 71

Lasermix H 302 72

Lasermix N 301 72

Special Lasing Gas Mixtures 288 72

Refrigeration Gases

Refrigerant R134a 0155 73

Refrigerant R22 0158 74

Refrigerant R404A 0248 74


Ammonia, Refrigerant R717 (NH3) 178 75

Gas Codes Reference

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3 Industrial Gases


Air Based Gases

Applications Features Benefits

Brazing and hard soldering

Can be used in alternativeapplications suchas plasma-cutting

Used in metallurgical processessuch as die-casting and blastfurnaces

Compressed air cylinders are an

alternative to a compressorUsed to drive pneumatic drills

Odourless, colourless andnon-toxic

Does not burn but supportscombustion

When it is combined with afuel gas, produces a flame witha lower temperature than anoxy-fuel flame

The air-fuel flame is suitablefor brazing and solderingapplications with lowertemperature alloys

Can be used in the carboncoating processes. An air-acetylene flame is used toproduce carbon which can bedeposited onto the surface of acomponent to act as a releaseagent. Carbon coating is usedfor aluminium extrusion andglass manufacture as a mould-release agent.

Used in preference to oxygenfor carbon coating becauseit gives a greater level ofadjustment, thereby allowing thethickness of the carbon coat tobe varied

Can be used to dry telephonecables or to prevent moisture

Air

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Air Based Gases

Cylinder

Size

Nett Content

(m3)

Gauge Pressure

(kPa @ 15C) Outlet Connection

Material

Code

G 9.0 20,000 AS 2473 Type 60 108G

D 1.9 20,000 108D

Cylinder colour: Pewter (BS 18B25) body, black (BS 00E53) shoulder and neck.

Not all cylinders and packs are available at all BOC outlets. Please contact our Customer Service Centre on0800 111 333. Other sized cylinders and packs may also be available on request.

Gas Purity

Nitrogen Balance

Oxygen 21.0 1.0%

Water Vapour 20ppm*

* Full cylinder pressure@ 15C

Air Industrial Grade, CompressedGas Code 108

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Air Based Gases


Used for blanketing and purging

applications to displace or diluteall unwanted gas or vapour

Widely used for reasons ofsafety and the prevention ofproduct degradation in thechemicals and petroleumindustry

Inerting reactors and storagetanks

Purging vessels and pipelines

Sparging

Pressure transfer of liquids

Odourless and colourless

Non-toxic

Does not support combustion

An asphyxiant (does notsupport life)

Inert to nearly all substances

at ambient temperatures andmoderate conditions

Shielding or assist gas for plasmacutting aluminium and stainlesssteel, and as an assist gas forlaser cutting

Nitrogen keeps laser cut facesoxide-free, due to the chemicalinertness, to react with theatmosphere

Heat treatment processesto protect some of the mostreactive metals

Does not react with oxygen atlow temperatures

In electrochemical analysis, canbe bubbled through to displaceany oxygen

Inert, dry and slightly soluble Nitrogen gas is only slightlysoluble in a wide range of liquidsand is therefore used to flushunwanted gases from solutions

Pressure-transfer, where themovement of liquids or slurriesfrom one piece of process plantto another is moved using gaspressure

Tyre inflation: helps to extendtyre life and prevent tyre bursts

Reduces internal degradationof the rubber in tyres due tooxidisation

Pressurising accumulators forbatch-testing applications

Available in 200 bar Manpaks

Can be used for shrink

fitting. The intense cold of liquidnitrogen (-196C) reducesthe physical dimensions of acomponent placed in the liquid.Once cooled, the componentis connected to a matingcomponent before swelling toits original size as it reachesroom temperature, therebysecuring itself in place.

As a cryogenic liquid, nitrogen

can be used to thermallycontract metals

Nitrogen (N2)

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Air Based Gases

Cylinder

Size

Nett Content

(m3)

Gauge Pressure


Material

Code

G 8.9 20,000 AS 2473 Type 50 152G

D 1.8 20,000 152D

Pack Size

MAN 15 134.4 20,000 AS 2473 Type 50 152G15

Manifold Packs (Manpaks) available on quotation.

Cylinder colour: Pewter (BS 18B25) body, shoulder and neck

Not all cylinders and packs are available at all BOC outlets. Please contact our Customer Service Centre on0800 111 333. Other sized cylinders and packs may also be available on request.

Note: Fitted with Minimum Pressure Retaining (MPR) type valves to ensure product quality.

Gas Purity

Nitrogen >99.99%

Water Vapour 25ppm*

Oxygen 10ppm


Nitrogen Industrial Grade, Oxygen Free (N2)Gas Code152

Supply

There is a wide range of cryogenic storage vessels available for liquid nitrogen;portable liquid containers and large insulated storage vessels.

The volume range is typically from 5 litres to over 70,000 m3. The large storagevessels are filled in situ by road tanker.

Please contact our Customer Service Centre on 0800 111 333 for assistancein selecting the most appropriate storage vessel for your needs. A range ofinsulated dewars is also available for special purposes.

Gas Purity

Nitrogen >99.95%

Nitrogen Industrial Grade, Liquid (N2)Gas Code152BLK

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Air Based Gases


Widely used with a fuel gas for

cutting, welding, brazing andsoldering. The use of oxygengives higher flame temperaturesthan if air is used.

BOC oxygen is typically supplied

with a purity of 99.5% or higher

Vigorously supports combustion.

Introducing oxygen toconventional air-fuel flamesincreases the temperature ofthe flame.

In oxy-cutting, an oxy-fuel flamepreheats the steel to its ignitiontemperature. A jet of gaseousoxygen flows onto the red hotsteel, generating more heat andmelting the steel. The steel incontact with the oxygen jet isoxidised, creating metallic slagwhich is blown from the cut,

allowing more steel to reactwith the oxygen.

In plasma and laser cutting steel,an arc or a laser beam is usedto heat the steel to its ignitiontemperature. Oxygen is thenused in the same way as withoxygen cutting to create anexothermic reaction and toblow away any metal oxide orslag

Thermal lancing oxygen isused in conjunction with the

steel lance to create a hightemperature melting processcapable of drilling or cuttingthrough materials such asconcrete, brick, stone and mostmetals

High purity oxygen is used inlaboratories, process controloperations, metal analysisinstruments and in semi-conductor production

Used as an assist gas in lasersfor cutting mild steel

Colourless and odourless

Does not burn, but supportsand accelerates combustion

Oil, greases and solvents reactviolently with oxygen and metalsmay burn. Never use oil orgrease to lubricate oxygen oroxygen equipment, as they canspontaneously combust withexplosive force.

Oxygen must never be usedwith Polytetrafluoroethylene(PTFE) tape, as it will causecombustion. Standard PTFE tapecontains oil-based hydrocarbons.BOC does not recommendthe use of PTFE or otherthread sealing componentsin conjunction with any gascylinder valves or regulators.

When using oxygen, it isimportant to be aware of thehazards associated with anoxygen-enriched or -deficientenvironment

Non-toxic at atmosphericpressure

Used as an ingredient in someshielding gas mixtures, due to itsability to help stabilise the arcand reduce surface tension

When cutting, a 1% reductionin purity increases oxygenconsumption by 25% andreduces the cutting speed by asimilar amount

Oxygen (O2)

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Air Based Gases

Cylinder

Size

Nett Content

(m3)

Gauge Pressure


Material

Code

G 8.1 17,200 5/8 BSP RH Internal(Type 10)

100G

F 3.8 15,200 100F

E 2.4 15,200 100E

D 1.5 15,200 100D

A 0.56 20,000 AS 2473 Type 17 100A

Pack Size

MAN 15 121.5 17,200 5/8 BSP RH Internal(Type 10)

100G15

Manifold packs (Manpaks) available on quotation.

Cylinder colour: Black (BS 00E53)

Not all cylinders and packs are available at all BOC outlets. Please check with our Customer Service Centreon 0800 111 333. Other sized cylinders and packs may also be available on request.

Gas Purity

Oxygen >99.5%

Air* Balance

*Non specific constituents of air

Oxygen Industrial Grade, Compressed (O2)Gas Code100

Supply




Gas Purity

Oxygen >99.5%

Moisture

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3 Industrial Gases


Fabrication Gases


All the major applicationsof argon are related to theproduction, processing andfabrication of metals. The roleof argon is nearly always toexclude atmospheric air fromcontact with metal alloys. Anexample of this is as a purginggas to protect weld areas, such

as the inside of pipes duringwelding.

The predominant gas used inshielding gases, because it formsa very good shield due to thehigh density and total inertness

Colourless, tasteless andodourless

Inert to all materials at alltemperatures and pressures

Heavier than air, argon willcollect in low-lying areas, ductsand drains

An asphyxiant

Argon produced by BOC has aminimum purity level of 99.995% ideal for welding applications

Used on a wide range of ferrousand non-ferrous materials forwelding and cutting

Major component in mostshielding gas mixtures for arcwelding and cutting due to low

ionising potential

The low ionising potentialallows easy forming of a weldingarc without reacting with themetal components being welded

Shielding gas for MIG and TIGwelding processes and forplasma cutting. Argon is usedalone or mixed with other gasessuch as helium, carbon dioxide,oxygen, nitrogen or hydrogen.Each mixture is often specificto welding a particular materialor to a particular process. Forexample, argon is used as ashielding gas for TIG weldingaluminium, titanium and copper.

When welding thicker materials,other gases are added to theargon base to produce a morefluid weld pool

Argon (Ar)

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Fabrication Gases


When MIG welding ferrousmaterials, pure argon is not anideal shielding gas, as it producesan arc with poor cathodicrooting characteristics, largedroplet size and thereforehigher levels of spatter. Forthis reason, BOC recommendsthat Argoshield or Stainshieldgases be used, depending on thethickness and type of materialbeing welded.

When welding thicker materialwith argon, it is importantto take care to ensure thatproblems with fusion andporosity do not occur

Fills the inter-space in doubleglazed windows

Lower thermal conductivity thanmost other gases

Low thermal conductivity actsas an insulator and will nottransfer heat efficiently

CylinderSize

Nett Content(m3)

Gauge Pressure(kPa @ 15C) Outlet Connection

MaterialCode


130G

F 4.9 20,000 130F

D 2.0 20,000 130D

Pack Size

MAN 15 144 20,000 5/8 BSP RH Internal(Type 10)

130G15


Cylinder colour: Peacock blue (BS 18D45) body, shoulder and neck.


Higher grades and puritys of this product are available from BOC. Specifications are included in the SpecialGases Catalogue, contact your nearest BOC office to obtain a copy.

Note: Fitted with Minimum Pressure Retaining (MPR) type valve to ensure product quality.

Gas Purity

Argon >99.99%

Water Vapour 10ppm*

Oxygen 10ppm


Argon Welding Grade, Compressed (Ar)Gas Code130

Supply




Gas Purity

Argon >99.998%

Water Vapour 10ppm*

Oxygen 10ppm


Argon Welding Grade, Liquid (Ar)

Gas Code 130BLK

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Fabrication Gases


MIG welding mild steel

For welding carbon and alloysteel and stainless steel withflux cored wires

Shielding gas in plasma cutting

Liquid for substrate cooling tocontrol the heat build-up whenthermal and plasma spraying

BOC recommends the useof the Argoshield range asthe preferred mild steel MIGwelding gas

A colourless and odourless gas

that can cause the nose to stingin high concentration

Toxic in high concentrations

An asphyxiant (does notsupport life)

Slightly corrosive in thepresence of moisture

Suitable for inerting applications Heavier than air, carbon dioxide

will collect in ducts, drains andlow-lying areas

Higher density than air provides

good blanketing properties

Balancing pH levels in swimmingpools

Highly soluble in water atmoderate pressures

At elevated temperatures,carbon dioxide reacts with manysubstances

This chemical property has ledto its use as a reactant in somechemical processes

Cryogenic liquid carbon dioxidecan also be used in small pipefreezing applications

Dip tubes are used in liquidwithdrawal carbon dioxidecylinders to extract the liquidfrom the cylinder. The tuberuns down the centre of the

pressurised cylinder and drawsthe liquid up through thevalve. To identify these cylinders,a black stripe is painted downthe length of the cylinder

Carbon Dioxide (CO2)

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Fabrication Gases

Gas Purity

Carbon Dioxide(Liquid Phase) >99.8%

Water Vapour 80ppm*

Oxygen 100ppm


Cylinder

Size

Nett Content

(kg)

Gauge Pressure


Material

Code

G 33.0 0.86 14TPI RHExternal (Type 30)

169G

E 10.0 169E

D 6.8 169D

Pack Size

MAN 15 495 0.86 14TPI RHExternal (Type 30)

169G15


Cylinder colour: Silver (BS00A01) body, shoulder and neck.

Not all cylinders and packs are available at all BOC outlets. Please check with our Customer Service Centre

on 0800 111 333. Other sized cylinders and packs may also be available on request.

Carbon Dioxide Industrial Grade, Compressed (CO2)Gas Code 169

Storage

Details of the wide range of storage vessels and ancillaryequipment, are available from BOC on request.

Gas Purity

Carbon Dioxide >99.9%

Water Vapour 100 ppm*

* @ 15C

Carbon Dioxide Welding Grade, Liquid (CO2)Gas Code 169BLK

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Fabrication Gases

Applications

Storage and transportation offrozen or chilled foods

Storage and transportation ofmedical, pharmaceutical, researchand other temperature-sensitivematerials

Refrigerant for food storage inairline catering

Coolant in food processing

Freeze-branding

Fabrication shrink fitting

Reactions coolant in thechemicals, research andpharmaceutical industries

Industrial cleaning by blasting

Special effects and fog makingmachines

Features

Appears as a translucent whitesolid

Changes from a solid to agas (sublimes) at normaltemperatures without goingthrough a liquid state

Having a product temperature of-78.5C, dry ice is a good sourceof extreme cold

Dry Ice

Dry Ice Pellets, Solid Carbon Dioxide (CO2)Gas Code128*

Gas Purity


SizesTypical Weight(kg) Material Code

20 20.0 128020

200 200.0 128200P

Equipment

Use only recommended equipment for handling and storage.

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Shielding Gases

AS 4882: 2003 Shielding Gases for Welding

Designation (as specified in AS 4882-2003 Shielding Gasesfor Welding)

Individual gas components shall be identified as follows:

A Argon

C Carbon Dioxide

He Helium

H Hydrogen

N Nitrogen

O Oxygen

The designation system shall be based on volumetric percentages.

The shielding gas designation system shall be composed of thefollowing designator and number arrangement:

SG Shielding gas designator

The letters SG at the beginning of each designation identifies theproduct as a shielding gas. These letters are followed by a hyphen.

SG-B Base gas designator

Shielding gases are designated according to chemicalcomposition. The letter immediately to the right of SG indicates thesingular or major gas in the shielding gas or mixture.

SG-B XYZ Minor gas component designatorsThe letter(s) immediately following the base gas indicates the minorindividual gas indicators in decreasing order of percent. Theseletters are followed by a hyphen.

SG-B XYZ-% / % / % Percentage designators

A slash shall be used to separate the individual minor componentspercentages for two or more component mixtures.

BOC Shielding Gases AS 4882 Classification Table

Gas Code Classification Page

ArgoshieldLight 500 SG-ACO-5/2 57

ArgoshieldUniversal 501 SG-ACO-12/2 58

ArgoshieldHeavy 502 SG-ACO-18/2 59

StainshieldLight 503 SG-AHeC-85/1.5 60

StainshieldUniversal 504 SG-AHeC-55/2 60

StainshieldHeavy 505 SG-AHeC-38/2 60

AlushieldLight 506 SG-AHe-27 61

Alushield

Universal 507 SG-AHe-50 61

AlushieldHeavy 508 SG-AHe-73 61

SpecshieldPlus 509 SG-AC-2 62

SpecshieldTIG 510 SG-AH-1.5 62

SpecshieldMulti 511 SG-AO-2 63

SpecshieldFCW 512 SG-AC-23 63

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Shielding Gases

Recommended BOC Shielding Gas Selection Chart

Gas

Material Thickness (mm) Weld Characteristics

Principal Benefits

14 411 11+ Penetration Spatter free Speed Fillet shape Finish

GMAW Low and Alloy Steels

ArgoshieldLight Low distortionMinimal spatter

ArgoshieldUniversal FastClean appearance

ArgoshieldHeavy Good AppearanceLow defect levels on thick material

Carbon Dioxide (CO2)Industrial Grade

Good PenetrationIdeal for Flux CoredWwires

FCAW Low and Alloy Steels

SpecshieldFCW Good Weld AppearanceDeep penetration, fast welding speed

Carbon Dioxide (CO2)Industrial Grade

Good Weld Appearance Some wiresdesigned for use under CO2only

GMAW Stainless Steels

StainshieldLight Clean, fast

StainshieldUniversal Minimal spatter, Good PenetrationClean weld

StainshieldHeavy Low defect levels on thick materialExcellent arc stability, fast speed

GMAW Aluminium and Alloys / Copper and Alloys

AlushieldLight Minimal spatter, good appearance,fast weld speed

AlushieldUniversal Good penetrationFast, good profile

AlushieldHeavy Fast, good penetration on thicker materialWide bead shape

ArgonWelding Grade

Versatile

Arc Transfer Spray Dip

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Shielding Gases

Applications

Sheet metal engineeringindustries

Automotive componentsmanufacture

Vehicle repair

Cabinets/steel furnituremanufacture

Air conditioning industries

Domestic appliance manufacture

Light gauge storage tanks

Features

Excellent arc stabilityLow arc energy

Low oxidation potential

Uses less wire than higherCO2mixes

Wide operating envelope

Fast weld speed

Benefits

Easy to useLow defect levels

Low distortion levels

Good appearance andquality finish

Increased productivity

Minimal spatter productionnegates the need to clean weld

Can be used with manual,automatic and robotic machines

ArgoshieldLightGas Code500

Gas Purity

Oxygen 2.0 0.5%

Carbon Dioxide 5.0 0.5%

Argon Balance

Water Vapour 5 ppm*


CylinderSize

Nett Content(m3)


MaterialCode


500G

D 2.1 20,000 500D


Cylinder colour: Peacock blue (BS 18D45) body, silver (BS 00A01) shoulder, black (BS 00E53) neck.


Note: Fitted with minimum Pressure Retaining (MPR) type valve to ensure product quality.

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Shielding Gases

Applications

General fabricationLight to medium plate fabrication

Structural steelworks

Bridgework

Pipe and tube joining

Vehicle manufacture/heavy trucks

Rolled sections

Pressure vessels and boilers

Boats and ship building

Features

Excellent arc stabilityFluid weld pool

Used in dip, pulsed and spraymetal transfer modes

Fast travel speed

Benefits

Low defect levelsImproved weld fusion

Good weld appearance with lowreinforcement levels

Easy to use

Higher productivity due to fasterwelding speeds

Lowers overall costs by usingless wire

Lower spatter reduces clean-up time

Can be used with manual,automatic and robotic machines

CylinderSize

Nett Content(m3)


MaterialCode


501G

F 5.3 20,000 501F

D 2.05 20,000 501D





ArgoshieldUniversalGas Code501

Gas Purity

Oxygen 2.0 0.5%


Argon Balance

Water Vapour 5 ppm*


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Shielding Gases

Applications

Heavy engineeringHeavy structural steel

Boiler manufacture

Ship building and repair

Heavy vehicle manufacture

Thick walled pipes and pressurevessels

Pad-eyes and lifting lugs

Earth moving equipment

Features

Stable welding arcFluid weld pool

Used in dip and spray metaltransfer modes

Benefits

Improved weld fusionLow defect levels on thickmaterials

Good appearance and finish

Easy to use

Increased productivity

Can be used on automatedmachines

ArgoshieldHeavyGas Code502

Gas Purity

Oxygen 2.0 0.5%


Argon Balance

Water Vapour 5 ppm*


CylinderSize

Nett Content(m3)


MaterialCode


502G





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Shielding Gases

StainshieldLightGas Code503

Gas Purity


Helium 85.0 5.0%

Argon Balance

Water Vapour 5 ppm*

Oxygen 5 ppm


Cylinder

Size

Nett Content

(m3)

Gauge Pressure


Material

Code


503G


Cylinder colour: Peacock blue (BS 18D45) body, brown shoulder (BS 06C39), silver (BS 00A01) neck.



StainshieldUniversalGas Code 504

Gas Purity


Helium 55.0 5.0%

Argon Balance

Water Vapour 5 ppm*

Oxygen 5 ppm


CylinderSize

Nett Content(m3)


MaterialCode


504G





StainshieldHeavyGas Code505

Gas Purity


Helium 38.0 3.0%

Argon Balance

Water Vapour 5 ppm*

Oxygen 5 ppm


CylinderSize

Nett Content(m3)


MaterialCode


505G





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Shielding Gases

AlushieldLightGas Code506

Gas Purity

Helium 27.0 2.5%

Argon Balance

Water Vapour 5 ppm*

Oxygen 5 ppm


Cylinder

Size

Nett Content

(m3)

Gauge Pressure


Material

Code


506G


Cylinder colour: Peacock blue (BS 18D45) body, middle brown (BS 06C39) shoulder and neck.



AlushieldUniversalGas Code507

Gas Purity

Helium 50.0 5.0%

Argon Balance

Water Vapour 5 ppm*

Oxygen 5 ppm


CylinderSize

Nett Content(m3)


MaterialCode


507G





AlushieldHeavyGas Code508

Gas Purity

Helium 73.0 5.0%

Argon Balance

Water Vapour 5 ppm*

Oxygen 5 ppm


CylinderSize

Nett Content(m3)


MaterialCode


508G





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Shielding Gases

Gas Purity


Argon Balance

Water Vapour 5 ppm*


CylinderSize

Nett Content(m3)


MaterialCode


509G


Cylinder colour: Peacock blue (BS 18D45) body, silver (BS 00A01) shoulder and neck.



SpecshieldPlusGas Code509

Gas Purity

Hyrogen 1.5 0.5%

Argon Balance

Water Vapour 5 ppm*

Oxygen 5 ppm


CylinderSize

Nett Content(m3)


MaterialCode


510G


Cylinder colour: Peacock blue (BS 18D45) body, red (BS 04E53) shoulder and neck.



SpecshieldTIGGas Code510

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Shielding Gases

Gas Purity

Oxygen 2.0 0.5%

Argon Balance

Water Vapour 5 ppm*


CylinderSize

Nett Content(m3)


MaterialCode


511G


Cylinder colour: Peacock blue (BS 18D45) body, black (BS 00E53) shoulder and neck.



SpecshieldMultiGas Code511

Gas Purity

Carbon Dioxide 23 2.3%

Argon Balance

Water Vapour 5 ppm*


CylinderSize

Nett Content(m3)

GaugePressure(kPa @ 15C) Outlet Connection

MaterialCode


512G


Cylinder colour: Peacock blue (BS 18D45) body, silver (BS 00A01) shoulder and neck.Not all cylinders and packs are available at all BOC outlets. Please check with our Customer Service Centreon 0800 111 333. Other sized cylinders and packs may also be available on request.


SpecshieldFCWGas Code512

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3 Industrial Gases


Fuel Gases

Dissolved Acetylene (C2H2)Applications Features Benefits

The only fuel gas that can beused to weld steel

Flame hardening an oxy-acetylene flame can be usedwhere the hardened surfaceof carbon steel componentsis either in situ as a remedialprocess or on components toolarge to fit in a furnace

Flame cleaning a wide oxy-acetylene flame is held veryclose to a steel surface to becleaned

Thermal spraying of variousmetals and ceramics. Thematerial to be sprayed is fedthrough the flame.

Distinctive garlic-like smell,which is recognisable above 2%concentrations in the air

May cause dizziness in highconcentrations

Low auto-ignition temperature requires minimal energy toignite in air or oxygen

Can react over time withsome metals to form explosiveacetylides

The hottest and most efficientof all fuel gases

Oxygen and acetylene togetherproduce a flame temperature ofapproximately 3150C

Spot-heating applications

Brazing

Texturing

Profile cuttingBranding pallets

Wood-ageing

The oxy-acetylene flame givesvery good localised heating

In cutting, oxy-acetylene givesthe fastest preheating and

piercing times of any fuel gascombination

In oxy-acetylene cuttingprocesses, improved cut quality,higher cutting speed, faster cutinitiation time and reducedoxygen use are achieved

Glass and metal castings

Mould release and other anti-stick applications

When used with either oxygenor air, acetylene can producea thin layer of black carbonparticles. This can preventcomponents sticking in theirmoulds.

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Fuel Gases


Highly reactive, acetyleneis dissolved in acetone andcontained within a porous massinside the cylinder

Acetylene is stored in speciallydesigned cylinders to preventdecomposition

Slightly lighter than air and willcollect at ceiling level

Unused gas will not collect inlow-lying areas, ducts and drainscausing a potential hazard

Acetylene Industrial Grade, Dissolved (C2H2)Gas Code120

Gas Purity

Acetylene >98.0%

(On Acetone Free Basis)

CylinderSizes

Nett Content(m3)

Gauge Pressure(kPa at 15C) Outlet Connection

MaterialCode

GM 6.0 1,550 5/8 BSP LH Internal(Type 20)

010GM

Cylinder colour: Maroon (BS 04C40) body and shoulder, Light blue (BS 18E50) neck

Not all cylinders and packs are available at all BOC outlets. Please check with our local Customer ServiceCentre on 0800 111 333.

Gas Purity

Acetylene >98.0%

(On Acetone Free Basis)

CylinderSizes

Nett Content(m3)

Gauge Pressure(kPa at 15C) Outlet Connection

MaterialCode

G 6.7 1,550 5/8 BSP LH Internal(Type 20)

120G

F 3.0 1,550 120F

E 1.45 1,550 120E

D 0.9 1,550 120D

A 0.27 1,550 120A

Manifold Packs (Manpaks) available on quotation

Cylinder colour: Maroon (BS 04C40)


Acetylene Instrument Grade, Dissolved (C2H2)Gas Code010

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Fuel Gases

Gas Purity

Product complies withNZS 5435:1996

CylinderSizes

Nett Content(kg)


MaterialCode

H / HE* 88.0 0.885 14NGO LHInternal (Type 21)

170H/170HE

G / GE* 45.0 170G/170GE

FS 18.0 170FS

Cylinder colours: Gas withdrawal - Silver, Galvanised or Ivory (BS 10B15) body

*Liquid withdrawal (GE and HE) - (excluding forklift cylinders) - Silver, Galvanised or Ivory (BS 10B15) body.

Not all cylinders and packs are available at all BOC outlets. Please check with our Customer Service Centre

on 0800 111 333. Other sized cylinders and packs may also be available on request.


Used in oxy-propane cutting

and brazing. Often used as analternative to acetylene forapplications when high cuttingspeeds and efficiencies are notrequired

Oxy-propane is widely used forpreheating components

Shrink wrap applications

Space heating

Propane is used in theagricultural industry for:

Drying crops

Heating greenhouses andlivestock sheds

Flame-weeding

Pest control

An associated fire and explosion

hazard. Highly combustible,having explosive limits in air ofbetween 2.29.5% by volume

Heavier than air collects inlow-lying areas such as drainsor ducts

BOC propane is stenched togive a fish-like odour

Can cause dizziness at highconcentrations

Supplied as a liquid in cylindersor bulk tanks

On a profile cutting machine,

oxy-propane gives fast, cleancuts on thick plate

As a dual-fuel option on cars

As a fuel to power fork-lifttrucks and other industrialvehicles

Available as a vapour or liquidwithdrawal from cylinders

Easily combustible, portable withclean burning characteristics anda high calorific value

HandigasLPGGas Code170

LPG / Propane (C3H8)

Supply

Various sizes of tanks available on request.

HandigasBulkGas Code170BLK

Gas Purity


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3


Fuel Gases

MarathonLPGGas Code112

Gas Purity


Cylinder

Sizes

Content

(kg)

Gauge Pressure


Material

Code

T 20.0 1.25 Acme RHExternal (CGA790)

112T

TS 15.0 112TS

Cylinder colour: Silver, Galvanised or Ivory (BS 10B15) body and shoulder, Safety Orange (BS 06E55) neckand guard

Not all cylinders are available at all BOC outlets. Please check with our Customer Service Centre on0800 111 333. Other sized cylinders may also be available on request.

HandigasLPG ForkliftGas Code 174

Gas Purity


CylinderSizes

Content(kg)


MaterialCode

FT 19.1 1.25 Acme RHExternal (CGA790)

174FT

ET 15.1 174ET

Cylinder colour: Silver, Galvanised or Ivory (BS 10B15) body, shoulder and neck

Not all cylinders are available at all BOC outlets. Please check with our Customer Service Centre on 0800111 333. Other sized cylinders may also be available on request.

Gas Purity

Nitrous Oxide >99.0%

CylinderSizes

Nett Content(m3)


MaterialCode

G 19.7 4,700 5/8 BSP RHInternal (Type 10)

191G

Cylinder colour: Royal Blue (BS 20D44) body, shoulder and neck

Not all cylinders are available at all BOC outlets. Please check with our Customer Service Centre on0800 111 333.

Note: Fitted with Minimum Pressure Retaining (MPR) type valve.

Nitrous Oxide Industrial, Compressed (N2O)Gas Code191

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Fuel Gases

Gas Purity

Hydrogen >99.5%


Oxygen 10 ppm


CylinderSizes

Nett Content(m3)


MaterialCode

G 6.3 15,200 AS 2473 Type 20 141G

E 2.0 15,200 141E

Manifold Packs (Manpaks) available on quotation

Cylinder colour: Red (BS 04E53) body, shoulder and neck.


Note: Fitted with Minimum Pressure Retaining (MPR) type valves to ensure product quality.


Heat transfer applications

An important addition to argonin a range of argon-hydrogenshielding gases for plasmawelding

Odourless, colourless and

tastelessWill ignite easily so cylindersmust not be snifted

Burns with an invisible flame

Has the highest thermal

conductivity of all gases

Can be used with argon in arange of gas mixtures for plasmacutting primarily stainless steeland copper alloys

Also used with oxygen forunderwater flame cutting.Deeper cutting requiresincreased pressure of fuel and

oxygen.Can be used as an alternativepower source when used with afuel cell to generate electricity

Lighter than air so will collect atceiling level

Is supplied at higher pressuresthan other fuel gases

In the glass industry, used toform the rim on glasses

Produces a flame ofapproximately 2,834C whenused with oxygen

Burns with a clean carbon-freeand soot-free flame

Hydrogen (H2)

Hydrogen Industrial Grade, Compressed (H2)Gas Code141

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3Industrial Gases


Laser Gases

Most industrial lasers need gases both to generate the laser light(lasing gases) and to assist in the process, be it cutting or welding(assist gases). All BOC laser gases are produced at ISO 9001accredited facilities and are designed to meet and exceed thespecifications of laser manufacturers.

Whether you have a CO2, Nd:YAG, exicimer or diode laser, gasesof the correct quality are important not only to maintain the lasersreliability but also to ensure the highest process productivity.

The BOC range of laser gases have been specifically designed inconjunction with laser manufacturers to minimise laser down timeand to achieve optimum process performance.

BOC Laser Gases

Gas Code Use Process Page

Carbon Dioxide Laser Grade (CO2) 131 Lasing Gas Resonator 70

Helium Industrial Grade (He) 014 Lasing Gas Resonator 70

Helium Zero Grade (He) 023 Lasing Gas Resonator 70

Nitrogen Industrial Grade (N2) 016 Lasing Gas Resonator 71

Nitrogen Zero Grade (N2) 025 Lasing Gas Resonator 71

Lasermix H 302 Lasing Gas Resonator 72

Lasermix N 301 Lasing Gas Resonator 72

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Laser Gases

Gas Purity

Helium >99.99%


Oxygen 10 ppm


CylinderSize

Nett Content(m3)


MaterialCode


014G


Cylinder colour: Middle brown (BS 06C39) body, Light blue (BS 18E50) neck.


Helium Instrument Grade (He)Gas Code014

Gas Purity

Helium >99.995%

Water Vapour 5 ppm*

Oxygen 5 ppm


CylinderSize

Nett Content(m3)


MaterialCode


023G


Cylinder colour: Middle brown (BS 06C39) body, Light blue (BS 18E50) neck.


Helium Zero Grade (He)Gas Code023

Gas Purity


Hydrocarbons

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Laser Gases

Gas Purity

Nitrogen >99.99%


Oxygen 10 ppm


CylinderSize

Nett Content(m3)


MaterialCode


016G


Cylinder colour: French grey (BS 12B21) body, Black (BS 00E53) shoulder, Light blue (BS 18E50) neck.


Nitrogen Instrument Grade (N2)Gas Code016

Gas Purity

Nitrogen >99.998%

Water Vapour 5 ppm*

Oxygen 5 ppm


CylinderSize

Nett Content(m3)

GaugePressure(kPa @ 15C) Outlet Connection

MaterialCode


025G


Cylinder colour: French grey (BS 12B21) body, Black (BS 00E53) shoulder, Light blue (BS 18E50) neck.Note: Fitted with minimum Pressure Retaining (MPR) type valve to ensure product quality.

Nitrogen Zero Grade (N2)Gas Code025

Lasing GasesPure

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Laser Gases

Gas Composition

Nitrogen 13.5 1.5%


Helium Balance



Lasermix HGas Code302

Gas Purity

Helium 40.0 1.0%


Nitrogen Balance



CylinderSize

Nett Content(m3)


MaterialCode

GS 5.8 13,700 5/8 BSP RH Internal(Type 10)

301GS

Cylinder colour: Green Grey (AS4484) body, Middle brown (BS 06C39) shoulder, Silver (BS 00A01) neck.

Only available in above sizes.


Lasermix NGas Code301

Lasing Gases Premixed

Cylinder

Size

Nett Content

(m3)

Gauge Pressure


Material

Code

GS 7.13 17,200 5/8 BSP RH Internal(Type 10)

302GS

Cylinder colour: Middle brown (BS 06C39) body, Green (BS 14E56) neck and shoulder.

Only available in above sizes.


Special Laser Gas Mixtures

Description

BOC supplies a variety of pre-mixed gases and an extensive range of specialist gas mixtures for all major lasers.Ring BOC Customer Service on 0800 111 333 for details.

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Refrigeration Gases

Product Gas Code Page

Refrigerant R134a 0155 73


Refrigerant R404A 0248 74


Ammonia, Refrigerant R717 (NH3) 178 75

Other refrigerants can be supplied but are not a stockitem. Ring BOC Customer Service on 0800 111 333for details

Refrigeration Gases

Description

Refrigerant gas R134a is a colourless, non-flammablegas at atmospheric pressure with a slight etherealodour. Supplied at low pressure in metal cylinders. Alsoavailable pre-mixed with UV dye (Genetron 134a +UV).

Uses and Features

Wide use in household and commercial refrigeration,and automotive air-conditioning. Properties makeR134a suitable for use in medium temperature foodcabinets, water chillers and fountains, heat pumps anddehumidifiers.

Increasing use as a replacement for CFC 12.

Blowing agent for various foams.

Propellant for aerosol pharmaceuticals, lacquers,

deodourants, perfumes, mousses, air fresheners,insecticides, cleaning and other household products.

Gas Purity

HFC 134a 1, 1, 1, 2 Tetrafluoroethane >99.7% wt

Cylinder Sizes Content (kg)Gauge Pressure(kPa @ 21C)

Min Cylinder TestPressure (MPa)

OutletConnection Material Code

WH 460.0 387 3.6 AS 2473 Type 34 0155WH

R 65.0 387 3.6 0155R

P 22.0 387 3.6 0155P

Cylinder colour (to AS 4484): Galvanised or white body, aqua shoulder and valve guard.

Refrigerant R134aGas Code 0155

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Refrigeration Gases

Description

Colourless, non-flammable gas at atmospheric pressurewith a slight ethereal odour. Supplied in low pressurecylinders.

Uses and Features

Commercial and medium temperature refrigerationapplications.

A replacement for CFC 502.

Gas %

HFC 143a Trifluoroethane 52

HFC 125 Pentafluoroethane 44

HFC 134a Tetrafluoroethane 4

Purity >99.7% wt

Cylinder Sizes Content (kg)

Gauge Pressure

(kPa @ 21C)

Min Cylinder Test

Pressure (MPa)

Outlet

Connection Material CodeR 45.0 1270 4.2 AS 2473 Type 34 0248R

P 16.0 1270 4.2 0248P

Cylinder colour (to AS 4484): Galvanised body, brown shoulder and valve guard.

Refrigerant R404AGas Code 0248

Description

A colourless, non-flammable, non-toxic gas. In lowconcentrations it is odourless. In higher concentrationsits odour is mild and somewhat ethereal. It is shipped insteel cylinders as a liquefied gas.

Uses and Features

R22 is very popular for use in all types of household andcommercial refrigeration and air conditioning equipmentwith reciprocating rotary, scroll and screw compressors.

The high refrigeration properties of R22 permit the useof smaller equipment a considerable advantage wherespace is at a premium.

Gas Purity

HCFC 22 Chlorodifluoromethane >99.5% wt




WH 460.0 730 3.6 AS 2473 Type 34 0158WH

R 65.0 730 3.6 0158R

P 22.0 730 3.6 0158P

Cylinder colour (to AS 4484): White or galvanised body, moss green shoulder and valve guard.

Drum colour: white or galvanised body, moss green drum ends.

Refrigerant R22Gas Code 0158

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Description

Colourless, non-flammable gas at atmospheric pressurewith a slight ethereal odour. Supplied in low pressurecylinders.

Uses and Features

Commercial and medium temperature refrigerationapplications.

A replacement for CFC 502.

Gas %

HFC 125 Pentafluoroethane 50

HFC 143a Trifluroethane 50

Purity >99.7% wt




R 45.0 670 4.2 AS 2473 Type 34 0250R

P 15.0 670 4.2 0250P

Cylinder colour : White or galvanised body, brown (BS 04B23) shoulder and valve guard.

Refrigerant R507Gas Code 0250

Description

Ammonia is a colourless, corrosive gas that has apungent odour. Ammonia gas is flammable, toxic anddissolves readily in water. It is supplied as a liquefied gasat low pressure in metal cylinders.

Uses and Features

Used in both absorption and compressor type systems.

Alternative to fluorcarbon refrigerants in large moderncommercial refrigeration systems.

Within industrial, chemical and agricultural processes,typical uses of ammonia include the case hardening ofsteel by nitriding, water disinfecting in conjunction withchlorine, environmental control of particulate matterby electrostatic precipitation enhancement, effluenttreatment, metal extraction in mining processes, animalfeed improvement and fertiliser production.

Gas Purity

Ammonia 99.9% w/w




WH 230 790 3.6 AS 2473 Type 32 178WH

S 56 790 3.6 178S

Cylinder colour (to AS 4484): White or silver (galvanised) body, slate shoulder and valve guard.

Ammonia, Refrigerant R717 (NH3)Gas Code 178

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