Post on 07-Mar-2018
transcript
Disclosure to Promote the Right To Information
Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public.
इंटरनेट मानक
“!ान $ एक न' भारत का +नम-ण”Satyanarayan Gangaram Pitroda
“Invent a New India Using Knowledge”
“प0रा1 को छोड न' 5 तरफ”Jawaharlal Nehru
“Step Out From the Old to the New”
“जान1 का अ+धकार, जी1 का अ+धकार”Mazdoor Kisan Shakti Sangathan
“The Right to Information, The Right to Live”
“!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता है”Bhartṛhari—Nītiśatakam
“Knowledge is such a treasure which cannot be stolen”
“Invent a New India Using Knowledge”
है”ह”ह
IS 6630 (1985): Seamless ferritic alloy steel pipes forhigh temperature steam service [MTD 19: Steel Tubes, Pipesabd Fittings]
IS:6630-1985
Indian Standard SPECIFICATION FOR
SEAMLESS FERRITIC ALLOY STEEL PIPES FOR HIGH TEMPERATURE STEAM SERVICES
( First Revision )
First Reprint AkIL 1996
UDC 621.643.2-977[669.15-194.57-462.31
Q-5
0 Copyright 1986
BUREAU OF INDIAN STANDARDS MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG
N6W DELHI 110002
February 1986
--.- .- .-. _ _ ___“_
IS:6630-1985
Indian Standard SPECIFICATION FOR
SEAMLESS FERRITIC ALLOY STEEL PIPES FOR HIGH TEMPERATURE STEAM SERVICES
( First Revision )
Steel Tubes, Pipes and Fittings Sectional Committee, SMDC 22
Chairman Representing
SHRI S. C. DHINQRA Ministry of Industry
Members Sntu A. S. AGARWAL
Sum R. S. PATHAK ( Alternate ) Steel Tubes of India Ltd. Dewas
SHRI K. N. AI~UIA FedgF;e;: Engineering Industries of India,
SHRI A. S. SHARMA ( Alternate ) SHRI S. N. BASU Directorate General of Supplies & Disposals
SHRI T. N. UBOVEJA ( Alternute ) ( Inspection Wing ), New Delhi
SIBI H. S. BEDI Steel Authority of India Ltd ( Rourkela Steel
SHRI P. K. MOHAPATRA ( Alternate j Plant ). Rourkela
Sum D. P. BHAT~ACHARJBB SHRI S. C. ARORA (Alternate)
SHIU P. K. CHAKRAVARTY Sruu A. N. MIIXA (Alternate )
Sum B. B. CHAKRAVBRTI Sum A. K. SHOMB ( Alternute )
SHRI L. M. CHAUDHRI
SHKU K. K. GANDHI ( Alternute ) SHRI S. C. GUFTA
Export Inspection Council, Calcutta
Tata Iron & Steel Co Ltd, Jamshedpur
Superintendence Co of India (P) Ltd, Calcutta
Publ~h~;;~~partment ( Public Health Branch ),
As&&n of Indian Engineering Industry, New
SHRI N. P. JYOI-I ( Alternute ) LT-COL V. B. JADHAV Engineers-in-Chief’s Branch, Army Headquarters,
New Delhi . . SHRI J. C. MENLNRATTA ( Aftbmure 1
(Continued on page 2)
0 Copyright 1986 BUREAU OF INDIAN STANDARDS
‘Ibis publication is protected under the Indian Copyright Act ( XIV of 1957 ) and reproduction in whole or in part by any means except with written permission of the publisher shall be deemed to be an infringement of copyright under the said Act.
Is:6630-1985
( Continuedfrompage 1 )
Members Representing
JOINT DIRECTOR STANDARDS ( MP/ Research Designs & Standards Al ) ( M’nistry of Railways ) Lucknoworganization
CXEMIST & MBTALLUROIST - I, RDSO ( Alternate ) .
SZIRI SUSHIL JAIN SHRI V. K. GUP~A .( Alternate )
Jain Tube Co Ltd. Ghaziabad
SHRI S. C. JAIN SIIRI A. S. SHARMA ( Alternate )
Jindal Pipes Pvt Ltd, Ghaziabad
Smu N. P. JYOTI Bharat Steel Tubes Ltd. New Delhi SHIU R. K. ABROL ( Alternate 1
SHRI H. M. KAUL \ ’ Ministry of Agriculture SHRI M. G. KESAVA RAO Hindustan Shipyard Limited, Vishakhapatnam
SHRI P. L. NARASIMHAM ( Alternate 1 SHRI B. KUMAR
SHRI T. K. BASU ( Alternate) !&RI S. KUMAR
S&warts & Lloyds of India Ltd, Calcutta
SHRI S. CHANDRA ( Alternate ) Indian Register of Shipping, Bombay
DR M. D. MAHESHWARI SHRI D. DUITA ( Alternate )
Indian Tube Co Ltd, Jamshedpur
SHRI K. MUKHERJE~! Fertilizer ( Planning & Development ) India Ltd, dndri
SHRI R. K. SINHA ( Alternate ) SHRI K. N. R. NAIR Tube Products of India, Madras
DR INCX S. K. SEN ( Alternate ) SHRI S. NEELAKANTAN
DR A. R. KESKAR ( Ahernate) Zenith Steel Pipes & Industries Ltd, Khopdi
Sruu RAJ JASWANT SINGH Dir&Ny;t;eFbyneral of Technical Development,
SHRI G. P. SARABHAI Oil & Natural Gas Commission, Dehra Dun SARIV. K. CHATURVEDI ( Alternate)
SHRI V. A. SATHGURUNATH Bharat Heavy Electricals itd, Tiruchchirappalli SHRI V. RAGHAVENDRAN ( Alternate 1
SHRI APOORVA SHAH SHRI H. J. THAKER I Alternate )
SHFU E. SUBBA RAO SHRI P. C. JOHAR: ( Alternate )
SHRI B. R. TANEJA SHRI 0. J?. KAKKAR ( Alternate j
sujarat Steel Tubes Ltd, Ahmadabad
Indian Oil Corporation Ltd, Bombay
Indian Seamless Metal Tubes Ltd, Bombay
Central Boilers Board, New Delhi
Director General, IS1 ( &-oficio Member ) ._. ,
SHRI K. K. VISWANATHA‘M ’ SHRI G. S. GOSAL ( Althmate )
SHRI K. RA~HAVENDRAN, _ Director ( Strut & Met ) ( Secretury 1
Joint Secretary
SHRI P. N. KOHLI Supervisor ( Drawings ) ( Strut & Met ), ISI
( Cotttinued on page 17 )
2
IS:6630 -1985
Indian Standard
SPECIFICATION FOR SEAMLESS FERRITIC ALLOY STEEL PIPES FOR
HIGH TEMPERATURE STEAM SERVICES
( First Revision )
0. FOREWORD
0.1 This Indian Standard ( First Revision ) was adopted by the Indian Standards Institution on 28 June 1985, after the draft finalized by the Steel Tubes, Pipes and Fittings Sectional Committee had been approved by the Structural and Metals Division Council.
0.2 Specification for seamless ferritic alloy steel pipes for high temperature services was first published in 1972 to meet the increased application of ferritic alloy steel pipes. A revision of the standard has been prepared incorporating the following main changes:
4
b)
New designations of steel have been incorporated in accordance with IS : 1762 ( Part 1 )-1974*. A provision has been made for instrumental analysis of the metals.
0.2.1 Elevated temperature properties as given earlier in IS : 6630 - 1972t and in Appendix A have been retained after review, till further data on indigenous steel is available.
0.2.2 Tubes for heat exchangers and stills are not covered by this standard.
0.3 In preparing this standard assistance has been derived from the follow- ing:
IS0 2605/2-1976 Steel products for pressure purposes - Derivation and verification of elevated temperature properties - Part 2 : Proof stress of austenitic steel products. International Organization for Standardization.
*Code for designation of steels: Part 1 Based on letter symbols (first revision ). tSpecification for seamless ferritic alloy steel pipes for high temperature service.
3
IS:6630 - 1985
DIN 17175 : 1959 Seamless tubes of high temperature steel. Deutscher Normenausschuss.
ASTM : A 335-1981 Seamless ferritic alloy steel pipe for high tempera- ture service. American Society for Testing and Materials.
0.4 For the purpose of deciding whether a particular requirement of this standard is complied with, the final value, observed or calculated, expressing the result of a test or analysis, shall be rounded off in accor- dance with IS : 2-1960*. The number of significant places retained in the rounded off value should be the same as that of the specified value in this standard.
1. SCOPE 1.1 This standard covers the requirements for seamless ferritic ailoy steel pipes intended for high temperature steam service. in this standard are given in Table 1.
Several grades covered
TABLE 1 CHEMICAL COMPOSITION
(CIauses1.1,4.1,4.1.1,4.1.2,4.2and4.3)
GRADE ~RCJINTAGEOF~EMENTS
DESIGNATION r--~-__A-.-_ ----v [REP IS : 1762- ( PART l )-1974* C Si Mn P, Max S. Max Cr MO V OLD DEESIONA- TTON ]
(1) (2) (3) (4) (5) (6) (7) (8) (9) ( 16Mo2_0)
lXr4Mo6 ( 15CrWM~5J
lOCr9M~O ( 10Cr2Mol)
20Cr20Mo6 ( 10CrSMo55_)
( 14Cr45Mo 6OV2fi -
o-12 to 0.20
@zzo 0.15,
Max 0’15, Max
0.10 to 0.18
0.10 to a35
@lo to 0.35
0.50,
ZY Ma;
&lo to 0.35
040 to 0940 O-80
OF7F 0940
@oY,,‘” 0*040 0.40 to 0.030 0.70 0.40 to @040 0.70
0.040 -
0.040 0.70 to 1.10
o@O % to 0.030 4.0 to
6.0 0.040 0.30 to
0.60
0.25 to - 0.35
0.45 to - 0.65
09Oto - 1.20
oz” - 0.50 to 0.22
0.70 to 0.32
*Code for designation of steels: Part 1 Based on letter symbols (firsr revision ).
*Rules for rounding off numerical values ( revised ).
4
IS: 6630 -1985
2. SUPPLY OF MATERIAL
2.1 General requirements relating to the supply of ferritic alloy steel pipes shall conform to IS : 1387-1967*.
3. MANUFACTURE
3.1 Steel shall be manufactured by open hearth, electric, basic oxygen or a combination of these processes. In case any other process is employed by the manufacturer, prior approval of the purchaser should be obtained. If the basic oxygen process is employed for manufacture, the nitrogen con- tent of the steel shall not exceed 0.007 percent.
3.2 Sufficient discard should be made from each ingot or billet to secure freedom from harmful piping and undue segregation.
3.3 The pipes shall be made by a seamless process and shall be either hot finished or cold finished, subject to agreement between the purchaser and the manufacturer.
4. CHEMICAL COMPOSITION
4.1 Pipes shall be manufactured from steels which when analysed in accor- dance with the methods specified in IS : 228t and its relevant parts shall conform to the chemical composition given in Table 1.
4.1.1 The chemical analysis of steel shall be as given in Table 1.
The analysis of steel shall be carried out either by the method specified in IS : 228t and its relevant parts or any other established instrumental/ chemical method. In case of dispute the procedure given in IS : 228t and its relevant parts shall be the referee method. However, where the method is not given in IS : 2287 and its relevant parts, the referee method shall be as agreed to between the purchaser and the manufacturer.
4.1.2 Elements not quoted in Table I, shall not be intentionally added without the agreement of the purchaser, other than for the purposes of finishing the heat. All reasonable precautions shall be taken to prevent the addition of such elements from scrap or other materials used in the manu- facture, but residual elements may be present provided the mechanical properties and applicability are not adversely effected.
*General requirements for the supply of metallurgical materials (first revision ).
tMethods of chemical analysis of steels.
IS:6630-1985
4.1.3 All steels shall be fully killed. Aluminium content shall not exceed 0.02 percent.
4.2 Ladle Analysis - The steel of each heat shall have ladle anylysis to the grades and chemical composition as given in Table 1.
4.3 Product Analysis - Product analysis of one pipe from each batch of pipe of the same size and wall thickness and from the same heat of’steel shall be made. The results of this analysis shall not differ from the values specified in Table 1 by amounts greater than given below:
Element
1
Carbon
Manganese
Sulphur and phosphorus Chromium Molybdenum
Vanadium
5. HEAT TREATMENT
Maximum qf Speci/ication
: (2) GO-20
t
GO.50 <o*so <0*040 g6.0 90.35
t
>o-35- 1.20 GO.32
Permissible Deviation from the Specified
Composition
(3) fo-03
. fO*05
f f0.10 -+0905 &O*lO f O*04
I
*o-o5 50.03
5.1 Pities conformlng to grade 20Cr20Mo6 ( lOCr5Mo55 ) shall be supplied in the annealed condition. Pipes conforming to grade 16Mo30 shall be supplied in the normalized or normalized and tempered condition. Pipes conforming to grade 15Cr4Mo6 ( 15Cr90Mo55 ) and 14Cr45Mo 60 V27 shall be supplied in the normalized and t&per&d condition. &pes Gnfbiming to grade lOCr9MolO ( lOCr2Mol ) may be supplied in the annealed or normalized and tempered condition.
6. DIMENSIONS
6.1 Dimensions of pipes shall conform to the requirements specified in Table 2.
6.2 Tolerances - The tolerances on outside diameter and wall thicknest shall conform to the requirements specified below and in 6.2.1.
6
IS:6630-1985
NOMINAL BORE
(1)
15
40 50
%
100 125 150
NOTE - Sizes agreement.
TABLE 2 DIMENSIONS OF PIPES - i*
( CZuuse 6.1 )
All dimensions in millimetres.
OUTSIDE DIAMETER
(2)
21.3 269 33.7 42.4
% 73.0 88’9
114-3 141.3 168.3 219-l 273-O 323.9 355.6 406.4
other than those specified here may be
WALL THICKNESS
(3)
;:; 3.2 3.6 3-6 4’0
;:6”
6.3 7.1 8.8, 7-l
11.0, 8
14’2, 10,6*3 16, 11,8-O 175. 11.8-O 20, 12.5, 8’8
ordered by mutual
6.2.1
Nominal Pipe Size Tolerance Up to and including 40 mm f0.5 mm Above 40 mm fl percent
Tolerances on wall thickness shall be as under:
Tolerances on Wall Thickness
Seamless All sizes Unlimited -12.5 percent
6.3 Pipes may be supplied in random lengths of 4 to 7 metres. If ordered in exact lengths as agreed to between the supplier and the purchaser, pipes shall be subjected to a plus tolerance of 6 mm.
7. FREEDOM FROM DEFECTS
7.0 The finished pipe shall be reasonably straight and free from injurious defects. _ _ .,
__. .I’ I r ”
7
IS : 6630 - 1985
7.1 Depth of Injurious Defects - All defects shall be explored for depth. When the depth is in excess of 5 percent of the nominal wall thickness or encroaches on the minimum wall thickness, such defects shall be considered injurious.
7.2 Machiniug or Grinding Defects not Classified Injurious - Surface defects not classified as injurious shall be treated as follows.
7.2.1 Pipe showing scabs, seams, laps, tears or slivers not more than 5 percent of the nominal wall thickness, need not have these defects removed. If deeper than 5 percent, such defects shall be removed by machi- ning or grinding, provided that the remaining wall thickness is within the specified limits.
7.2.2 Pipe showing inside or outside surface checks ( fish scale ) 0.4 mm or less in depth need not have_ these defects removed. Such defects over 0.4 mm but not more than 0.8 mm in depth shall be removed by machining or grinding. Pipes on which these defects are more than 0.8 mm in depth shall be rejected, unless the manufacturer can demonstrate to the purchaser that the defects are not injurious.
7.2.3 Mechanical marks or abrasions and pits shall be acceptable without grinding or machining provided the depth does not exceed 1.6 mm. If such defects are deeper than 1.6 mm these shall be removed by grinding or machining to sound metal, and the remaining wall thickness shall be within the specified limits.
7.2.4 When defects have been removed by grinding or machining the outside diameter at the point of grinding or machining may be reduced by the amount so removed. Should it be impracticable to secure a direct measu- rement, the wall thickness, at the point of grinding or at a defect not required to be removed, shall be determined by deducting the amount removed in grinding or the depth of the defect from the minimum measured wall thickness at the ends of the pipe; and the remainder shall not be less than the minimum required wall thickness.
8. MECHANICAL TESTS
8.0 For material heat-treated in batch type furnace, tests shall be made on 5 percent of the pipe from each treated lot. For small lots at least one pipe shall be tested. For material heat-treated by thecontinuous process, tests shall be made on a sufficient number of pipes to constitute 5 percent of the lot, but in no case less than 2 pipes.
The manufacturer shall provide at his own expense extra tube at the rate of 2 percent of each diameter and thickness of tube specified and the Inspecting Officer shall select for test such of the tubes as he may think
8
Is:6630-1985
proper to the extent of the percentage mentioned. Should the number of tubes specified or any one nominal size exceed 400, then, for every 100 tubes or part thereof above that number, one additional tube shall be provided. The samples for testing shall not be heat-treated after selection.
NOTE - The term ‘lot’ applies to all pipes of the same nominal size and wall thickness which are produced from the same heat of steel and subjected to the same finishing treatment in continuous furnaces: when final heat treatment is in a batch type furnace, the lot shall include only that pipe which is heat-treated in the same fur- nace charge.
8.1 Tensile Test - The yield strength, tensile strength and the percentage elongation of the steel tubes when determined in accordance with IS : 1894- 1972* shall conform to the values specified in Table 3.
8.2 Flattening or Bend Test
8.2.1 For pipe sizes 50 mm NB and below bend test shall be carried out. For pipes over 50 mm NB flattening test shall be carried out.
8.2.1.1 Flattening test - The flattening test shall be carried out in accordance with IS : 2328-1963t. The test piece shall consists of 63.5 mm long pipe taken from one end of each selected pipe. The test piece shall be flattened cold between parallel plates and shall show no crack or flaw when the distance between the plates is not greater than H.
J.f_ (l+C)a C+a
where H=
a=
D=
C=
D
distance between the plates (mm), specified thickness (mm), specified outside diameter (mm), and a constant depending on the grade of steel=0*87.
NOTB; 1 - Surface imperfection revealed during flattening test,. shall be removed by grinding and shall be checked for the minimum required wall th&cness.
NOTE 2 - Superficial rUptu& resulting from surface imperfections shall not be a cause for rejection.
8.2.1.2 Bend test shall be carried out in accordance with IS : 2329- 1963:. A suf&cient length of tube shall be bent cold through 90” around
*Method for tensile testing of steel tubea. *Method for flattening test on steel tubes. $Method for bend test on steel tube-s.
9
TABLE 3 TENSILE REQUIREMENTS
(Clause 8.1 )
STEIIL GRADE REFERENCE HEAT
TREATMENT
E; (1) (2) 16Mo30 N, N+T 15CT!x%4055 N+T lOCrYMo5S A 1OCr2Moi A
N+T N+T
lKr45Mo6OV27 N+T - --
HEAT TREATMENT TENSILE YIELD ELONOATION
----- k_- -7 STRENGTH STREN- ON 5.65@ Normalized or Annealed Tempered MPa GTH MPa PERCENT r--------- ----h---7- Min Min Min Tempeeture 0000~ Temygature Cb&g
tiOll tion
(3)
900-940 900-960 850-880
900-960 900-960 900-960
930-980
(4)
a
;
f a a a
(5) (6) (7)
600-650 a 440-590 640-720 a 440-590
- - 410-560
- - 410-560 650-780 a 490-640
650-750 a 490-640 640-720 a 460-610
(8) (9)
250 22
250 22 205 20
175 20 275 16
275 15 275 15
N-Normalized. a = Aircooled. N+T=Normalized and tempered. f = Furnace cooled.
A = Annealed.
a cylindrical mandrel the diameter of which is 12 times the nominal dia- meter of the tube, without developing cracks.
rs:6630-1985
8.3 Hydraulic Test
8.3.1 Each tube shall be tested at the manufacturer’s work with hydraulic pressure of 1.5 times the design pressure but in no case less than 7 MPa ( 700N/cm2 ) nor greater than the pressure P calculated from the following formula:
where
P = test pressure in MPa, S = stress in N/mm2 which shall be taken as 80 percent of the
minimum yield stress at room temperature, t = specified thickness in mm, and d = outside diameter in mm.
NOTE - 1 MPa = 1 N/mm* = O-102 kgf/mm’.
8.3.2 The test pressure shall be maintained sufficiently long but not less than 5 seconds for proof and inspection. Any tube failing to withstand the hydraulic pressure test shall be deemed not to comply with the standard.
8.4 Non-destructive Testing - By an agreement between the manufacture and the purchaser the tubes may be subjected to non-destructive testing by a suitable method including the reference standards.
9. RETESTS
9.1 If the test specimen representing a heat fails to conform to the require- ments specified in 4, an analysis of each pipe from the same heat may be made and all pipes conforming to the requirements shall be accepted.
9.2 If the test specimen representing a lot of pipes fails to conform to the requirements specified in 8.1 and 8.2, the manufacturer may elect to make retests on two additional lengths from the same lot. If both the retest specimens conform to the requirements, all the lengths in the lot shall be accepted except the length from which the initial specimen was taken. If one or both of the retest specimens fail to conform to the specified requirements, the manufacturer may elect to test individually the remaining
\engths in the lot, in which case determinations are required only for the particular requirements with which the specimens failed to comply with the preceding tests.
11
IS : 6630 - 1985
10. MARKING
10.1 The pipes shall be marked with the following particulars:
a) Manufacturer’s name or trade-mark, b) Nominal size and thickness,
c) Grade, d) Heat number, and e) Type of steel.
10.1.1 steel:
The following symbols may be used for indicating the type of
Electric furnace steel E Open hearth steel R Basic oxygen BO
10.1.1.1 Suitable symbols may be used for steel made by other appro- ved processes.
10.2 BIS Certification Marking
The product lnay also be marked with Standard Mark.
10.2.1 The use of the Standard Mark is governed by the provisions of Bureau of Indian Standards Act, 1986 and the Rules and Regulations made thereunder. The details of conditions under which the ticence for the use of- Standard Mark may be granted to manufacturers or producers may be obtained froin the Btireau of Indian Standards.
11. TEST CERTlFICATE
11.1 If specified in the order, the supplier shall furnish certified copies of test certificate containing the following:
a) Purchaser’s order number; b) Specification, title and grade; c) Heat number; d) Nominal size, wall thickness and quantity of pipes; e) Product analysis; f) Results of mechanical tests at room temperature; g) Results of any supplementary test; and h) Signatures and stamp of inspecting authority.
12
APPENDIX A ( Clause 0.2.1 )
ELEVATED TEMPERATURE PROPERTIES
A-l. The elevated temperature yield stress properties of the steels are as given in Table 4.
TABLE 4 ELEVATED TEMPERATURE YIELD STRESS
t; STEU GRADE REFERENCE YIELD STRESS IN MPa AT TEMPERATURE
HEAT TREAT ~_____--_.-__---__- -W--W_- MENT 20°C 5O’C 100°C 15O’C 200°C 250°C 300°C 350°C 400°C
(1: (2) (3) (4) (5) (6) (7) (8) (9) (10) (11)
15Cr90Mo55 N+T 268 254 240 230 220 210 183 169 164 14CrzMo_6 N i-T 270 266 259 248 235 218 192 184 177
v27 lOCr2Mol A 129 121 108 99 92 85 80 74 72
N+T 272 268 261 153 245 236 230 224 218 N+T=Normalized and tempered.
A = Annealed.
OF
450°C
(i2) 161 168
69 66 - 205 189 167
---- ! 500°C 550-c
(13) (14)
156 151 155 148
6OO”d
(15)
146 135
- 145
A-2. The stress rupture properties of the steels are given in Table 5.
As in the Original Standard, this Page is Intentionally Left Blank
IS:6630-1989
TABLE 5 STRESS RUPTURE PROPERTIES
STEEL REFER- GRADE ENCE.
HEAT TREAT- MENT
(1) (2)
I sCt?$sioSS N+ T -
14Cr4SMo N+T 63v2z
lOCr2Mol A
N+T
( Ckuse A-2 )
RUP~URB TlMF ---
ESTIMATED AVERAGE STRESS FOR RUPTURE IN hWa AT TEMFWU~Z~RE OF -- -~ -m-- _--_-_. - _ _.._-
h 450°C 460°C
(3) (4) (5)
10000 - - 30000 - - 50000 - -
100000 - - 150000 - - 200000 - - 250 000 - -
10000 - - 30000 - - 50000 - -
100000 - - 150000 - - 200000 - - 250 000 - -
10000 (251) (236) 30000 (226) (211) 50 000 211 197
100000 196 182 150000 193 177 200000 1’86 170 250000 181 165
10 000 ( 309) ( 285 ) 30000 (276) (254) 50 000 257 236
100000 221 204 150000 209 192 200 000 203 186 250 000 198 181
470°C 480°C 490°C SOOT 510°C 520°C 530°C 5u)“C sso”c 560°C 57o’C 580°C 590°C 600°C’
(6) (7) (8)
273 233 207 177 161 148 139
(9) (10) (11) (12) (13) (14) (1%
-
-
-
304 267 239 210 194 180 170
239 209 179 154 129 109 91 200 169 140 116 96 76 66 177 149 124 101 82 68 55 146 121 99 81 67 54 43 132 108 87 77 57 46 38 122 99 79 64 52 42 34 114 91 ?4 59 48 39 32
(18)
53 36 - - - - -
(19)
2 - - - - - - - -
95 78 67 50 - -
- - - -
299 268 241 219 198 179 164 148 261 232 209 187 168 152 135 121 243 217 193 172 153 136 121 107 218 191 170 150 131 116 100 85 205 179 156 136 119 101 85 70 194 169 145 127 109 91 76 61 185 160 138 119 101 83 68 54
134 107 92 72 57 48
(16) (17)
76 64 54 44 4s -
(::) 1
(28) - (25) -
121 108 93 80 78 66 59
(45) (3456) (37) (28)
-
- - -
- (42) (32) -
96 85 76 78 70 61 71 62 54 59 51 44 54 46 SO 43 (ZY) 47 40 ( 35 )
96 85 76 79 70 61 71 62 54 59 5) 44 54 47 50 43 (4307) 47 41 ( 35 )
- -
221 206 191 177 162 147 133 121 108 1% 181 168 153 139 126 113 101 89 183 170 156 142 128 116 104 92 81 168 154 141 127 115 102 90 78 69 161 145 129 116 103 9P 79 71 56 154 138 123 110 97 85 75 66 58 149 132 118 105 93 81 72 63 54
68 54
47
( 38 ) ( 35 )
(32) (30)
61
( 48 )
(Z)
( 30 ) (28) ( 26 )
263 240 219 196 176 155 137 122 108 233 213 192 172 152 134 117 103 90 217 197 177 158 139 123 107 93 80 186 170 153 137 122 107 93 79 69 175 158 141 126 110 95 82 73 63 169 152 135 119 103 89 77 68 58 164 147 130 113 98 84 74 64 55
68
54
$)
( 35 ) ( 32 ) ( 30.)
61 48 42
( 34 ) (30) (28) (26)
-Values given in parentheses are N+T~~hzed and tempered. A=anneakd.
obtained by extrapolation beyond the stress range covered by the test data and are thus subject to greater uncertainty.
As in the Original Standard, this Page is Intentionally Left Blank
IS : G630 - 1985
( Continuedfiom page 2 )
Panel for Revision of IS : 1914, IS : 3609 and IS : 2416, SMDC 22/P-18
Convener SHRI D. DUTTA
Members
Representing The Indian Tube Co Ltd. Jamshedpur
Snmr R. RAMA RAO ( Alternate to Shri D. Dutta )
SHRI B. N. DAS Tube Products of India, Madras SHRI M. THOLKAPPIAN ( Alternate )
SHHI N. P. JYOTY SHRI R. K. ABROL ( Alternate )
Bharat Steel Tubes Ltd. New Delhi
SHRI N. N. RAY SHIU S. L. THEOBALD ( AIterrrate )
Central Boilers Board, New Delhi
SHRI S. K. SINHA SHHI A. SRMIVASULU
ACC-Babcock Ltd. Calcutta
SHRI H. J. THAKER Bharat Heavy Electric.& Ltd, Tiruchchirappalli Gujarat Steel Tubes Ltd, Ahmadabad
17
BUREAU OF INDIAN STANDARDS
Headquarters : Manak Bhavan, 9 Bahadur Shah Zafar Marg. NEW DELHI 110002 Telephones : 331 01 31 Telegrams : Manaksansths
331 13 75 (Common to all Offices)
Regionel Offices :
Central : Marrak Bhavan. 9, Bahadur Shah Zafar Marg. NEW DELHI 110002
l Eastern : 1114 C.I.T. Scheme VII M. V.I.P. Road, Maniktola. CALCUTTA 700054
Northern : SC0 445-446, Sectoi 35-C. CHANDIGARH 160036 Southern
t Western : C.I.T. Campus, IV Cross Road, MADRAS 600113 : Manakalaya, E9 MIDC, Marol. Andheri (East),
BOMBAY 400093
Branch Offices :
‘Pushpak’, Nurmohamed Shaikh Marg, Khanpur, AHMADABAD 380001 ! Peenya Industrial Area, 1st Stage, Bangalore-Tumkur Road.
BANGALORE 560058 Gangotri Complex, 5th Floor, Bhadbhada Road, T.T. Nagar,
BHOPAL 462003
Plot No. 82/83, Lewis Road, BHUBANESHWAR 751002 Kalai Kathir Building, 6/48-A Avanasi Road, COIMBATORE 641037 Quality Marking Centre, N.H. IV, N.I.T., FARIDABAD 121001 Savitri Complex, 116 G. T. Road, GHAZIABAD 201001 53/5 Ward No. 29, R.G. Barua Road, 5th By-lane,
GUWAHATI 781003 5-8-56C L. N. Gupta Marg, ( Nampally Station Road )
HYDERABAD 500001 R14 Yudhister Marg, C Scheme, JAIPUR 302005
117/418 B Sarvodaya Nagar, KANPUR 208005
Plot No. A-9, House No. 561/63, Sindhu Nagar, Kanpur Rosa. LUCKNOW 226005
Patlipuua Industrial Estate, PATNA 800013
District Industries Centre Complex. Bagh-e-Ali Maidan. SRINAGAR 190011
T. C. No. 14/1421, University P. 0.. Palayam, THIRUVANANTHAPURAM 695034
Inspection Offices (With Sale Point) : Pushpanjali. First Floor, 205-A West High Court Road.
Shankar Naaar Sauare. NAGPUR 440010 Institution of %ngi&ers (India) Building, 1332 Shivaji Nagar.
PUNE 411005 -_
‘Sales Office Calcutta is at 5 Chowringhee Approach, P. 0. Princep Street, CALCUTTA
t Sales Office is at Novelty Chambers, Grant Road, BOMBAY
1 Sales Office is at Unity Building, Narasimharaja Square, BANGALORE
Telephone
i 331 01 31 331 13 76 37 86 62
21843 41 29 16
6 32 92 95
2 63 48 39 49 55
55 40 21
5 36 27 2 67 05
-
8-71 19 96 3 31 77
231083
63471
21 68 76
5 55 07
6 23 05
621 04
52 61 71
5 24 35
27 68 00
89 65 28
22 39 71
Reprography Unit, US, New Delhi, India