Heat Treating 4130
Heat Treating 4130
(OP)
Can you wait to temper the metal after you normalize it? The specification that we use calls out the the tempering has to happen within two hours of quenching. What will happen to the metal if we wait longer?





RE: Heat Treating 4130
With an air cool on 4130, the risk of cracking is much reduced.
rp
RE: Heat Treating 4130
RE: Heat Treating 4130
RE: Heat Treating 4130
RE: Heat Treating 4130
RE: Heat Treating 4130
Also tempering break the martensite needle structure.
Tempering & normalizing both relieve the stress, so there is no need to tempered it after normalizing.
If you do normalizing or annealing before quenching & tempering process, it will help to reduce the stress accumulation, distortion in the quenching process.
RE: Heat Treating 4130