Steel: 38CrMoAIA
Heat treatment hardness: HB260n ~ 320°
Nitriding hardness: HV9500 ~ 1000"
Nitriding depth: 0.50" 0.7mm
Nitriding brittleness: slffi grade 2
Roughness: Ra0.4
Screw straightness: 0.015mm
Chrome plating hardness: 2950HV
Chrome thickness: 0.05 ~ 0. 10mm
Bimetal depth: 1.0 ~ 2.0mm
Bimetal hardness: HRC56° ~ 65°