I CHOOSE LINCOLN . . .C U S T O M E R A S S I S TA N C E P O L I C Y The business of The Lincoln Electric Company® is manufacturing and selling high quality welding equipment, consumables, and cutting equipment. Our challenge is to meet the needs of our customers and to exceed their expectations. On occasion, purchasers may ask Lincoln Electric for information or advice about their use of our products. Our employees respond to inquiries to the best of their ability based on information provided to them by the customers and the knowledge they may have concerning the application. Our employees, however, are not in a position to verify the information provided or to evaluate the engineering requirements for the particular weldment. Accordingly, Lincoln Electric does not warrant or guarantee or assume any liability with respect to such informa-tion or advice. Moreover, the provision of such information or advice does not create, expand, or alter any warranty on our products. Any express or implied warranty that might arise from the information or advice, including any implied warranty of merchantability or any warranty of fitness for any customers’ particular purpose is specifically disclaimed.
Lincoln Electric is a responsive manufacturer, but the selection and use of specific products sold by Lincoln Electric is solely within the control of, and remains the sole responsibility of the customer. Many variables beyond the control of Lincoln Electric affect the results obtained in applying these types of fabrication methods and service requirements.
Subject to Change – This information is accurate to the best of our knowledge at the time of printing. Please refer to www.lincolnelectric.com for any updated information.
MILD STEEL - Hypertherm® Powermax®65Process Thickness (inches)
22GA 18GA 14GA 10GA 3/16 1/4 3/8 1/2 5/8 3/4
65 A Shielded 0.062 0.065 0.068 0.070 0.076 0.088 0.090 0.091
45 A Shielded 0.035 0.054 0.055 0.061 0.065 0.066
FineCut 0.028 0.026 0.016 0.023
Low Speed FineCut 0.026 0.030 0.027 0.023
65 A Unshielded 0.062 0.064 0.066 0.068 0.075 0.081
45 A Unshielded 0.020 0.050 0.051 0.054 0.057 0.059
ESTIMATED KERF WIDTH
First
Torch height, bevel, and dross
Good Angled Too high Too low Hard Dross
The arc begins narrow at the top, gets wider in the middle, and gets narrow again at the bottom. The “best” bevel, and the best cut overall is usually “in the middle.” Check the charts below for height, then run speed and voltage tests.
When cut at the correct speed and voltage, the “middle” arc height that produces the least bevel also reduces dross cleanup.
Material Thickness
Torch- to-Work Height
Initial Pierce Height
Pierce Delay Time
Best Quality Production
Cut Speed Voltage Cut Speed Voltage
inches inches inches % seconds ipm Volts ipm Volts
16GA
0.6
0.15 250
0.1260 123 294 121
10GA 190 125 224 123
3/16 0.2 140 126 168 125
1/4 0.5 90 127 116 127
3/8 0.7 45 130 62 129
1/2 0.18 300 1.2 30 135 40 132
5/8 0.24 400 2.0 23 138 26 136
3/4
Edge Start
15 141 19 141
7/8 12 143 14 143
1 8 145 10 145
65 AmperesMaterial
Thickness
Torch- to-Work Height
Initial Pierce Height
Pierce Delay Time
Best Quality Production
Cut Speed Voltage Cut Speed Voltage
inches inches inches % seconds ipm Volts ipm Volts
26GA
0.02 0.08 400
0.0350 128 500 128
22GA 350 128 450 128
18GA0.1
350 129 400 128
16GA 350 130 400 129
14GA
0.06 0.15 250
0.2 270 130 320 129
12GA0.4
190 133 216 131
10GA 100 134 164 131
3/16 0.5 70 135 108 132
1/4 0.6 48 137 73 132
45 Amperes
Material Thickness Current
Torch- to-Work Height
Initial Pierce HeightPierce Delay Time
Recommended
Cut Speed Voltage
inches A inches inches % seconds ipm Volts
26GA
35
0.6 0.15 250
0.0325 78
24GA 325 78
22GA0.1
325 78
20GA
40
325 78
18GA 0.2 325 78
16GA0.4
250 78
14GA
45
200 78
12GA0.5
120 78
10GA 95 78
Fine Cut1. Have the right consumables for your amperage, and make sure your amperage is correct for the material you
are cutting. Perform speed tests and evaluate cut quality.
2. Do not simply replace every component in your consumable stack when one component is worn out.
3. If cut quality falls off, make an immediate inspection of the consumables, air supply, and work lead connection.
4. Get as much experience as you can with your machine.
5.Keep a log of when you replace consumables.
Replace Each Consumable Item When . . . it is NEARLY worn out !
www.TorchmateStore.com866-571-2200 ex2 or [email protected]
Hypertherm and Powermax are registered trademarks of Hypertherm, Inc. Hanover, NH, USA
Lines highlighted yellow are the preferred thicknesses for each amperage chart.
Plasma CuttingConsumables