17-4PH, H1150D, Double Heat Treatment steelmax2019-01-08T18:05:43+09:007월 29th, 2018| 17-4PH H1150D 강재는 우주항공, hand tools 의료장비 용도로 사용됩니다. ※ Hardening or Aging Temperature, or Both H1150D : 1150℉ (620℃) for 4 h, air cool plus 1150℉ (620℃) for 4 h, air cool