18-02-2014, 01:48 PM
(18-02-2014, 12:48 PM)Chris_90 Wrote: I got told that 100amp will do 5/6mm 160amp will be up to 10mm I've done more than 10mm with my 100amp one and it's holding fine!
That might be true for arc welding but mig is completely different.
Yes, a 100amp machine will do 5/6mm but you wont get full penetration through the steel. ie maybe only the first 2/3mm of the 5/6mm steel will actually have melted. You would need to cut a cross section through the steel to see how far the weld penetrated.
What was it you were welding 10mm plate on?