17-4PH, 1.4542, AISI 630, 1.4548 stainless steel
- Forging and rolling at 1150 - 900 ℃ with cooling in the air
- Annealing at 1020 - 1055 ℃ with cooling in oil or air
- Ageing for +P800 condition at 760 ℃ in the air for 2h + 620 ℃ in the air for 4h
- Ageing for +P850 condition at 610 - 630 ℃ in the air for 4h