Solid solution temperature is 815~830 ℃, oil cooling or air cooling (heating time: salt bath furnace 1min/mm, air furnace 2~2.5min/mm), and the hardness is 28HRC.
Aging temperature of Maraging250 and Maraging300 steel is 480 ℃, the holding time is 3h, and the hardness is 43HRC; Heat preservation for 6h, hardness of 52HRC.
Aging temperature of Maraging350 steel is 510 ℃, the aging time is 6h, and the hardness is 57~60HRC.
Nitriding treatment of Maraging maraging steel:
Gas nitriding process of Maraging300 steel:
The nitriding temperature is (455 ± 10) ℃, and the holding time is 24~28h.
