[uq5]

Hello, do you know how these headers welded that welds are so golden?
http://jdlautodesign.net/shop/evo-4-9-forward-facing/
Is it somekind specific material?

Thank you!

[Oscar]

Hello, do you know how these headers welded that welds are so golden?
http://jdlautodesign.net/shop/evo-4-9-forward-facing/
Is it somekind specific material?

Thank you!

Those are 304 stainless steel. The golden straw color is what results when the weld bead cools sufficiently before the argon coverage dissipates. You need a good size cup, with adequate argon flow, to get that, BUT most importantly you need good technique as in: you need to learn how to control the heat-input. You can have a large cup with lots of argon flow, but if you cook the metal by using too much amperage or lingering in one spot too long, you won't get the bead to cool sufficiently without wasting a LOT of argon and you end up with dark gray beads which means: oxidized stainless steel, which means it will now rust. Back-purging a part like that is a must.

[uq5]

Ok, thank you, I have to try it.