Hello, all
We have been asked to quote a weldment made from 4340 1.25 thick
Is this weldable by FCAW or GMAW? If so, what wire have you had success with?
According to the info I can find, we would need to preheat to 800 degrees?
After weld, I was going to bury the part in clean sand to slow the cooling rate. After weld, we will perform PWHT to 150-170 ksi.
Thanks for your replies.
Darrell