In article , Ted Edwards
wrote:

Ernie Leimkuhler wrote:

If you TIG weld 4130 using a ER80S-B2 filler rod, no post weld heat
treat is needed.

What, if any, is the advantage of ER80S-B2 over 309 or 312 SS?

Ted



There is still some question about stainless steel alloy filler metals
and stress fractures.

Personally I use Hastelloy W for most steel welding unless a color
match is needed.