Can you weld mild steel to cast iron ?

Question

Can you weld mild steel to cast iron ?

Answer 1

No.

Well, actually you could, but it will break the moment you put any stress at all on it. Sort of defeats the point.

Answer 2

If well cleaned , a small mig using shielded gas and the amperage not set too high will.

A tig welder will.

A little more difficult with an oxy/acet torch.I've been told people have done it with success.I've never tried.The trick is the brazing alloy.

Answer 3

If you try to weld cast iron, chances are, it can break. Cast iron has a high carbon content and will not do well if you try to weld it. Welding temperatures will  burn out carbon in the weld zone and create hard brittle spots in the casting even if you use a nickel rod. First choice is to drill and tap the steel and s***w the casting to it. That way your not heating the casting to elevated temperatures. As a second choice, braze or silver solder the parts and be careful not over heat the casting.

Answer 4

Using Nirod you could stick weld it or you could braze it.

Answer 5

Hi dis am a welder speaking, in short the answer is no the carbon / iron crystal structure is different , but what you can do to join the two materials together, is to braze them this is the strongest way ,but let them cool down slowly  no dunking in water it may crack along the cast iron side of the joint

Answer 6

Maybe, if you're very careful and use one of them thingy welders. Otherwise, the iron'll just crack. Cast iron is a right ***** for that sort of thing.

Have fun!

Answer 7

You can braze this with a torch using silver braze or flux coated nickel-silver rod or you can tig or stick weld it with a high nickel content wire or a stainless wire like 309.If the piece of cast is thick-slow cooling will be critical to prevent cracking.Pre heat it with a torch and bury it in sand after to let it cool overnight and you will be ok!

Answer 8

yes but you will need special electrodes or a shielded arc welding set-up.  you will need to pre-heat both workpieces and use a high nickel electrode