5140 steel is normalest alloy structure steel in chinese market,  The yield strength and tensile strength are higher that 1040 steel, But the weldability is not good. We need pay more attention to this before loading. To keep there is no any cracks show up.

5140 INVENTORY INFORMATION

Sizes:

  • 8mm to 1200mm
  • We can accept customized sizes

Delivery Time:

  • 7-10 working days for steel in stock.
  • 20-60 working days for direct production based on the quantity.

Sizes:

  • 8mm to 1200mm
  • We can accept customized sizes

Delivery Time:

  • 7-10 working days for steel in stock.
  • 20-60 working days for direct production based on the quantity.
  • Medium carbon cold heading die steel
  • After heat treatment get toughness and wear resistance
  • Good mechanical properties in tempering
  • Suitable for surface-hardening treatment
  • All kinds of bearings
  • Various machine parts
  • Screw and nuts
  • Transmission parts
GradeCSiMnSPCr
51400.38-0.430.17-0.370.70-0.90≤0.040≤0.0350.70-0.90
40Cr0.37-0.440.17-0.370.50-0.80≤0.040≤0.0350.80-1.10
SCr4400.38-0.430.15-0.350.60-0.90≤0.030≤0.0300.13-0.16
41Cr40.38-0.45≤0.400.60-0.90≤0.035≤0.0350.90-1.20
ST 52-3 Steel Round Bar

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