SAE4135
C 0.33-0.43 
Mn 0.40-0.60
P 0.035 (max)
S 0.04 (max)
Si 0.15-0.30
Cr 0.80-1.10
Mo 0.15-0.25

机械性能如下:

Density (×1000 kg/m3) 7.7-8.03 25
Poisson's Ratio 0.27-0.30 25
Elastic Modulus (GPa) 190-210 25
Tensile Strength (Mpa) 560.5 25 annealed at 865°C more
Yield Strength (Mpa) 360.6
Elongation (%) 28.2
Reduction in Area (%) 55.6
Hardness (HB) 156 25 annealed at 865°C more
Impact Strength (J)
(Izod) 61.7 25 annealed at 865°C more