Pre weld HT regarding welding 4130 onto Inconel 625.
Pre weld HT regarding welding 4130 onto Inconel 625.
(OP)
My guys intend to (Argon weld) 4130 onto Inconel-625, I know that post weld heat treatment isn't required but I need confirmation that pre weld HT isn't required for the 4130.
I don't think its required, am I wrong?
I don't think its required, am I wrong?





RE: Pre weld HT regarding welding 4130 onto Inconel 625.
Preheat is required for 4130 base metal because this is an alloy steel that has increased hardenability over carbon steel. I would use the following;
350 deg F for thickness at or below 1".
400 deg F for thickness greater than 1".
RE: Pre weld HT regarding welding 4130 onto Inconel 625.
RE: Pre weld HT regarding welding 4130 onto Inconel 625.
RE: Pre weld HT regarding welding 4130 onto Inconel 625.
RE: Pre weld HT regarding welding 4130 onto Inconel 625.
RE: Pre weld HT regarding welding 4130 onto Inconel 625.
RE: Pre weld HT regarding welding 4130 onto Inconel 625.