AISI 8630

[q1w2e3r4t5y6]

Any advice on welding AISI 8630 to say A36/50D steel - I get the impression it is possible but not a common choice of steel (low alloy) for welding

 

[TVP]

8630 will have substantial hardenability, and therefore significant risk of cracking, embrittlement, etc. Arc or beam welding certainly isn't recommended. Can this be friction welded instead?

 

[Metaljon]

Yes you can weld this combination but you would need a high pre-heat and PWHT as well. Exact conditions depends on material thickness.

 

[stanweld]

Recommend making the dissimilar metals weld with E7018 H4R or other low hydrogen process. Minimum preheat and the need for PWHT will be based on the weld joint geometry. I would recommend a minimum preheat temperature of 350F and would raise it depending on joint restraint. If PWHT over 1150 F is required, I would recommend E7018-A1 H4R or equivalent.