PPT Slide

Din AISI/SAE Surface Hardness(Hv) Nitriding Case Depth (mm)

Spring Steels

67SiCr5 700-800 <=0.1

HeatTreatable Steels

42CrMo4 4140 550-650 0.3-0.5

30CrNiMo8 ~4340 600-700 0.3-0.5

30CrMoV9 750-850 0.2-0.5

Nitriding Steels

31CrMo12 EN40B 750-900 0.2-0.5

34CrAlNI7 A355 900-1000 0.2-0.5

Heat Resistant Steels

14CrMoV69 ~514 750-900 0.4-0.8

56NiCrMoV7 L16 550-700 0.2-0.5

Hot Working Steels

X32CrMoV33 H10 900 -1100 0.1-0.3

X40CrMoV51 H13 900-1100 0.1-0.3

Cold Working Steels

X100CrMoV51 A2 800-1000 0.1-0.2

X155CrMo122 D2 900-1300 ~0.1