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JFS JSC270D JFS A2001 Chemical
JFS JSC270D JFS A2001 in addition to carbon, steel also contains a small amount of manganese (Mn), silicon (Si), sulfur (S), phosphorus (P), oxygen (O), nitrogen (N) and hydrogen (H). These elements are not intentionally added to improve the quality of steel, but are brought in by ore and smelting process, so they are called impurity elements. These impurities have a certain impact on the properties of steel. In order to ensure the quality of steel, the chemical composition of all kinds of steel is strictly stipulated in technical standards.
The main elements proportion is as below:
| Element | Min | Max | Similar |
|---|---|---|---|
| Si | - | 0.0300 | - |
| C | 0.0100 | - | - |
| Al | - | 0.0200 | - |
JFS JSC270D JFS A2001 Mechanical
| Yield Rp0.2 (MPa) |
Tensile Rm (MPa) |
Impact KV/Ku (J) |
Elongation A (%) |
Reduction in cross section on fracture Z (%) |
As-Heat-Treated Condition | Brinell hardness (HBW) |
|---|---|---|---|---|---|---|
| 949 (≥) | 391 (≥) | 34 | 12 | 13 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 411 |
JFS JSC270D JFS A2001 Physical
The JFS JSC270D JFS A2001 material physical properties shall comply with the values given in the following table.
| Temperature (°C) |
Modulus of elasticity (GPa) |
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and | Thermal conductivity (W/m·°C) |
Specific thermal capacity (J/kg·°C) |
Specific electrical resistivity (Ω mm²/m) |
Density (kg/dm³) |
Poisson's coefficient, ν |
|---|---|---|---|---|---|---|---|
| 31 | - | - | 0.44 | - | |||
| 658 | 144 | - | 14.3 | 444 | - | ||
| 112 | - | 31 | 34.2 | 242 | 421 |
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