Welding en36b

[WindyParticipant @windy30762]

Have seen EN36B is ok to weld before heat treatment but have been looking for a suitable Tig or Mig welding rod on the web but can't seem to get a definite rod.

I have mild steel mig wire or tig 309L for dissimilar metals.

Maybe one of the forum members could suggest a suitable welding rod.

Thanks for any useful information.

[WindyParticipant @windy30762]

[Ian S CParticipant @iansc]

Hi Windy, here's what info I have: use a low hydrogen electrode. Pre heat at 250*C – 350*C and maintain heat during the weld, cool slowly in ashes or what ever. If possible stress relieve by heating to 600*C – 650*C and cool in still air. Welding is not recommended in hardened area, either through hardened or case hardened.

Ian S C

[Mark RandParticipant @markrand96270]

I've used 7018 rods for arc welding the stuff to mild steel. TIG or MIG wouldn't have worked with my welders in the sizes I was using. I'd go for mild steel wire or typical A15 or A18 TIG rods if those processes are ok for the welds. EN36 doesn't harden to a great degree in its native form, but pre-heat, lack of quenching and stress relief as Ian says are preferable if possible. If you go on to case harden after welding, the mild steel filler will take up the hardening in a similar manner to the EN36.

[WindyParticipant @windy30762]

I did some test welds with the welding rods I have the Mig mild steel test I would not trust but have tried Tig 312 and seems to be very strong on a bend test I had the 312 for welding some HT steel a while ago.

A link to what Lincoln say

**LINK**

The welding I'm doing is more for sealing than for a joint under much load.

[Mark RandParticipant @markrand96270]

For welding high carbon or dissimilar metals, I use Inconel 82 because I've got a big reel of it . EN36 isn't all that special in terms of alloying components, so I wouldn't worry about welding it with mild steel filler.

[WindyParticipant @windy30762]

I used mild steel and it was brittle on the weld edge tried the other HT tig rod and it was a lot better

[Ian S CParticipant @iansc]

I'm sure the stress relief heat treatment would cure the brittle weld that you encountered. I think the cooling process is the key to a good weld.

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