JIS G4051 S20CK Introduce
{tit} steel is a popular and versatile material due to its excellent thermal properties, including thermal conductivity, thermal diffusivity, thermal expansion, thermal stress, and melting point. These properties make it well suited for various industries and applications, such as thermal insulation, thermal storage, precision components, structures, welding, and furnace components.
Smelting temperature:1417°C - 1414°C
Application:Carbon steel for mechanical structure
JIS G4051 S20CK Material Chemical Composition
The chemical composition of the JIS G4051 S20CK steel are as follows:
| Element | Min | Max |
|---|---|---|
| Silicon (Si) | 0.1500 | 0.3500 |
| Sulfur (S) | - | 0.0250 |
| PhOsphorus (P) | - | 0.0250 |
| (Ni+Cr) | - | 0.3000 |
| Nickel (Ni) | - | 0.2000 |
| Manganese (Mn) | 0.3000 | 0.6000 |
| Copper (Cu) | - | 0.2500 |
| Chromium (Cr) | - | 0.2000 |
| Carbon (C) | 0.1800 | 0.2300 |
JIS G4051 S20CK Material Mechanical Properties
The mechanical properties of the JIS G4051 S20CK steel are as follows:
| YieldRp0.2 | ≤ 852 (MPa) |
| TeileRm | ≤ 327 (MPa) |
| ImpactKV/Ku | 32(J) |
| ElongationA | 22% |
| Reduction in cross section on fractureZ | 23% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 323 |
JIS G4051 S20CK Material Thermal Properties
The thermal performance parameters of the JIS G4051 S20CK steel are as follows:
| Temperature (°C) | 33 | 713 | 685 |
| Modulus of elasticity (GPa) | - | 281 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 44 |
| Thermal conductivity (W/m·°C) | - | 42.3 | 12.2 |
| Specific thermal capacity (J/kg·°C) | - | 411 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.21 | - | - |
| Deity (kg/dm³) | - | - | 344 |
| Poisson’s coefficient, ν | - | - | 113 |