Saf-Fro PRESTOJET 60, Operator'S Manual, Page: 7 / 224

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Typical gas usage for MIG/MAG equipment:
Material type
Wire
diameter
[mm]
DC electrode positive
Wire Feeding
[m/min]
Shielding Gas
Gas flow
[l/min]
Current
[A]
Voltage
[V]
Carbon, low
alloy steel
0,9 ÷ 1,1 95 ÷ 200 18 ÷ 22 3,5 – 6,5 Ar 75%, CO
2
25% 12
Aluminium 0,8 ÷ 1,6 90 ÷ 240 18 ÷ 26 5,5 – 9,5 Argon 14 ÷ 19
Austenic
stainless steel
0,8 ÷ 1,6 85 ÷ 300 21 ÷ 28 3 - 7
Ar 98%, O
2
2% /
He 90%, Ar 7,5% CO
2
2,5%
14 ÷ 16
Copper alloy 0,9 ÷ 1,6 175 ÷ 385 23 ÷ 26 6 - 11 Argon 12 ÷ 16
Magnesium 1,6 ÷ 2,4 70 ÷ 335 16 ÷ 26 4 - 15 Argon 24 ÷ 28
Tig Process:
In TIG welding process, gas usage depends on cross-sectional area of the nozzle. For commonly used torches:
Helium: 14-24 l/min
Argon: 7-16 l/min
Notice: Excessive flow rates causes turbulence in the gas stream which may aspirate atmospheric contamination into the
welding pool.
Notice: A cross wind or draft moving can disrupt the shielding gas coverage, in the interest of saving of protective gas use
screen to block air flow.
End of life
At end of life of product, it has to be disposal for recycling in accordance with Directive 2012/19/EU (WEEE), information
about the dismantling of product and Critical Raw Material (CRM) present in the product, can be found at
https://www.lincolnelectric.com/en-gb/support/Pages/operator-manuals-eu.aspx