Arc welding Stainless Steel

[Dani99]

sweet thanks for that information so ill get some 308 for the SS to SS and 309 for the SS to mild is that correct?

sorry for all the questions i won't to get the correct materials

 

[Welderpaul]

308 for 304 stainless to 304 stainless

Any old 6013 for MS to stainless (or just use the 304's)

 

[Dani99]

would the 6013 ms to stainless not crack? or is it just the fact it will rust

 

[Welderpaul]

would the 6013 ms to stainless not crack? or is it just the fact it will rust

That's what i was getting at earlier.

Welding stainless to mild steel totally defeats the object, but it will weld with either stainless or mild steel consumables/rods/wire. It probably won't crack but it might. Metallurgically its not the right way to do it. Is it important?/does it matter? - thats your shout.

It either do it all in stainy or all in mild steel.

 

[Dani99]

i think ill go for doing it all in Stainless and order new flanges i carnt risk chewing up a £800 turbo that wouldn't go down well

 

[BrokenBiker]

put it this way, if i was doing it i would use 304 stainless all round, weld it with 308 or if i couldn't get those rods 312. If in not bothered about it being structurally strong i wouldn't worry about mild to stainless but as you want as little chance of anything going wrong, use 1 material right through. And as you have more time on arc that would definitely be my choice, just practice on some similar sized scrap first