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Your present location:Products >> Products >> Heat Treated Steel Bar >> 42CrMo/42CrMo4/42CrMoS4/ASTM A193 Grade b7/SCM440 alloy steel bar
  • Name: 42CrMo/42CrMo4/42CrMoS4/ASTM A193 Grade b7/SCM440 alloy steel bar
  • Number: 019
  • Uplaod time: 2017-03-16
  • Views : 182

AISI4140/ SAE4140/ SCM440/ 42CrMo4/ ASTM A193 GRADE B7 steel is a chromium-molybdenum alloy steel. 

AISI4140 SAE4140 SCM440 42CrMo4 B7 steel can be oil hardened(QT) to a relatively high level of hardness.              

AISI4140 SAE4140 SCM440 42CrMo4 B7steel has good ductility and good properties after quenched and tempered.

  • Steel Material Standard
GB DIN AISI/SAE SCM
42CrMo 42CrMo4 42CrMoS4 AISI4140 /SAE4140 /ASTM A193 GRADE B7 SCM440
  • Steel Chemical Composition (%):
C SI MN S P CR MO
0.38-0.45 0.15-0.35 0.60-0.90 0.035(MAX) 0.035(MAX) 0.90-1.20 0.15-0.25
  • Steel Mechanical Properties after QT:
Yield Strength(MPa) Tensile Strength(MPa) Elongation(%) Hardness(HRC)
930(min) 1080(mIn) 12%(min) 28-32
  • We mainly produce steel round bar, square steel bar, flat steel bar, hexagonal steel bar.  Dimensions as below:

Steel product

Steel dimensions

Steel round bar

10mm - 310mm

Square steel bar

10mm*10mm – 100mm*100mm

Hexagonal steel bar

16mm to 100mm

Flat steel bar

(6-80)mm – (20-100)mm

Special shapes steel bar

According to your drawing

  • To keep precision size and bright surface, we do Cold drawing, Peeling , Rough turning, Polishing, Grinding
  • To get good mechanical properties, we can also do annealing, normalizing, quenching and tempering.
  • steel bar application: gears, bolts, high tensile steel grade 10.9 steel anchor bolt, axles and many kinds of shafts.

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