JIS G4051 S12C Introduce
Steel is used widely in industry for its strength, durability and relatively low cost. Tensile strength is the amount of force needed to pull a material until it separates. The tensile strength of JIS G4051 S12C steel varies based on the alloy grade and the tempering process used. Impact strength is the amount of force needed to cause permanent deformation in a material. Hardness is a measure of a material's resistance to indentation and is usually measured using the Rockwell or Vickers test.
Smelting temperature:1764°C - 1745°C
Application:Carbon steel for mechanical structure
JIS G4051 S12C Material Chemical Composition
The chemical composition of the JIS G4051 S12C steel are as follows:
| Element | Min | Max |
|---|---|---|
| Silicon (Si) | 0.1500 | 0.3500 |
| Sulfur (S) | - | 0.0350 |
| PhOsphorus (P) | - | 0.0300 |
| (Ni+Cr) | - | 0.3500 |
| Nickel (Ni) | - | 0.2000 |
| Manganese (Mn) | 0.3000 | 0.6000 |
| Copper (Cu) | - | 0.3000 |
| Chromium (Cr) | - | 0.2000 |
| Carbon (C) | 0.1000 | 0.1500 |
JIS G4051 S12C Material Mechanical Properties
The mechanical properties of the JIS G4051 S12C steel are as follows:
| YieldRp0.2 | ≤ 461 (MPa) |
| TeileRm | ≤ 518 (MPa) |
| ImpactKV/Ku | 43(J) |
| ElongationA | 21% |
| Reduction in cross section on fractureZ | 34% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 323 |
JIS G4051 S12C Material Thermal Properties
The thermal performance parameters of the JIS G4051 S12C steel are as follows:
| Temperature (°C) | 13 | 338 | 825 |
| Modulus of elasticity (GPa) | - | 376 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 33 |
| Thermal conductivity (W/m·°C) | - | 24.3 | 12.2 |
| Specific thermal capacity (J/kg·°C) | - | 433 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.14 | - | - |
| Deity (kg/dm³) | - | - | 112 |
| Poisson’s coefficient, ν | - | - | 211 |