S40C

S40C Grade Introduction:

JISG4051 S40C steel, under JISG4051 standard, we can regard S40C carbon steel plate as high carbon steel. S40C carbon steel is one mainly of high carbon steel, S40C has high strength and good machinability, cold plastic deformation of the medium, good weldability, after quenching and tempering after welding, heat treatment, no temper brittleness, but lower hardenability. Bear the load for a small section of the larger pieces of quenched large normalizing or stress smaller parts and the Ministry of strength less demanding on the heart surface, hardening the surface wear parts, such as crankshafts, spindles, driveshaft, connecting rod, etc.

S40C Grade Application:

  • Oil and Gas Pipeline
  • Chemical Industry
  • Plumbing
  • Heating
  • Oil & Gas Industry
  • Water Supply Systems
  • Paper & Pulp Industry
  • Power Plant
  • Fabrication Industry
  • General-purpose applications
  • Food Processing Industry
  • Structural Pipe
  • Heat Exchangers

S40C Equivalent Grades:

S40C Chemical Composition:

Element C Si Mn S P Cr Ni Cu
Content (%) 0.37-0.44 0.17-0.37 0.50-0.80 0.025 0.025 0.25 0.30 0.25

Mechanical Properties:

Grade Tensile Strength (MPa) Yield Strength (MPa) Elongation in 100-150 mm (%) Reduction in Area Hardness
S40C ≥570 ≥335 ≥19 ≥45 ≤187 HB

Physical Properties:

Physical Properties Metric Imperial
Density 7.85 g/cm³ 0.284 lb/in³

Thermal Properties:

Metric Imperial
Coefficient of thermal expansion α 1.32E-5 1/K at 20 °C

Forging Properties:

Stress Relieving:

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