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JIS STKM12A vs JIS STKM13B
Property comparison of JIS STKM12A and JIS STKM13B, both carbon steel.
| Property | JIS STKM12A | JIS STKM13B | Difference |
|---|---|---|---|
| Yield strength | 175 MPa | 305 MPa | +74% |
| Tensile strength | 340 MPa | 440 MPa | +29% |
| Elongation | 35 % | 20 % | -43% |
| Elastic modulus | 206,000 MPa | 206,000 MPa | 0% |
| Shear modulus | 80,000 MPa | 80,000 MPa | 0% |
| Poisson ratio | 0.3 | 0.3 | 0% |
| Density | 7,860 kg/m³ | 7,860 kg/m³ | 0% |
| Thermal conductivity | 65.4 W/m·K | 65.4 W/m·K | 0% |
| Specific heat | 457 J/kg·K | 457 J/kg·K | 0% |
| Coefficient of thermal expansion | 0.000012 1/K | 0.000012 1/K | 0% |
| Melting point | 1,480 °C | 1,480 °C | 0% |
Difference is JIS STKM13B relative to JIS STKM12A. Values are taken from the representative row of each material; both materials may have multiple heat treatments or conditions on their individual pages.
Identification
JIS STKM12A
- standard
- JIS
JIS STKM13B
- standard
- JIS
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