CNS-SFCM75

Chemical composition

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Mo(%) Thick (mm) Yield stress (Mpa) Tensile stress (Mpa)
C(%)(%) ≦0.48 Si(%)(%) 0.15-0.35 ≦0.48 P(%)(%) ≦0.03 S(%)(%) ≦0.03 ≦0.48 ≦0.48 ≦0.48 ≦0.48 ≦0.48

Mechanical Properties


YieldRp0.2 (MPa) TensileRm (MPa) ImpactKV/Ku (J) ElongationA (%) Reduction in cross section on fractureZ (%) As-Heat-Treated Condition Brinell hardness (HBW)
329 (≥) 438 (≥) 22 32 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 131

Applications

  • Chromium Molybdenum Steel Forgings for General use

Country Code

  • CNS

Standard

  • 4041


Steel Type
SFCM75

Heat treatment
Heat Treatment of steel grade SCM425H
Heat treated : 1893°C - 1254°C

Relate Steel Type

Steel Type Standard Country Code C(%) V(%) Si(%) Mn(%) P(%) S(%) Cr(%)
SFCM75 4041 CNS ≦0.48 0.15-0.35 0.30-0.85 ≦0.03 ≦0.03 0.9-1.5
SFCM740 G3221 JIS ≦0.48 0.15-0.35 0.30-0.85 ≦0.03 ≦0.03 0.9-1.5
Gr.E A290 ASTM 0.35-0.45 ≦0.06 0.20-0.35 0.7-1.0 ≦0.04 ≦0.04 0.80-1.15
Gr.F A290 ASTM 0.35-0.45 ≦0.06 0.20-0.35 0.7-1.0 ≦0.04 ≦0.04 0.80-1.15
Class 3 A291 ASTM ≦0.45 ≦0.5 0.15-0.35 0.4-0.9 ≦0.04 ≦0.04 ≦1.25