JIS G4051 S20C Introduce
JIS G4051 S20C steel is a popular, high-quality steel used in many applications. This steel is known for its excellent strength and wear resistance, which makes it a great choice for many industrial, automotive, and automotive-related applications. It is also a viable material for many other parts and components due to its excellent formability, weldability, and consistent quality. JIS G4051 S20C steel also has several notable chemical properties that have made it a popular choice for many applications.
Smelting temperature:1138°C - 1846°C
Application:Carbon steel for mechanical structure
JIS G4051 S20C Material Chemical Composition
The chemical composition of the JIS G4051 S20C steel are as follows:
| Element | Min | Max |
|---|---|---|
| Silicon (Si) | 0.5100 | 0.4000 |
| Sulfur (S) | - | 0.0400 |
| PhOsphorus (P) | - | 0.0350 |
| Manganese (Mn) | 0.3000 | 0.6000 |
| Carbon (C) | 0.1500 | 0.2500 |
| Silicon (Si) | 0.1500 | 0.3500 |
| Sulfur (S) | - | 0.0350 |
| PhOsphorus (P) | - | 0.0300 |
| (Ni+Cr) | - | 0.3500 |
| Nickel (Ni) | - | 0.2000 |
| Copper (Cu) | - | 0.3000 |
| Chromium (Cr) | - | 0.2000 |
| Carbon (C) | 0.1800 | 0.2300 |
JIS G4051 S20C Material Mechanical Properties
The mechanical properties of the JIS G4051 S20C steel are as follows:
| YieldRp0.2 | ≤ 242 (MPa) |
| TeileRm | ≤ 989 (MPa) |
| ImpactKV/Ku | 31(J) |
| ElongationA | 22% |
| Reduction in cross section on fractureZ | 22% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 221 |
JIS G4051 S20C Material Thermal Properties
The thermal performance parameters of the JIS G4051 S20C steel are as follows:
| Temperature (°C) | 22 | 667 | 655 |
| Modulus of elasticity (GPa) | - | 265 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 31 |
| Thermal conductivity (W/m·°C) | - | 44.3 | 41.2 |
| Specific thermal capacity (J/kg·°C) | - | 424 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.31 | - | - |
| Deity (kg/dm³) | - | - | 122 |
| Poisson’s coefficient, ν | - | - | 241 |