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JIS SCM430 vs JIS SCM440
Property comparison of JIS SCM430 and JIS SCM440, both carbon steel.
| Property | JIS SCM430 | JIS SCM440 | Difference |
|---|---|---|---|
| Yield strength | 630 MPa | 735 MPa | +17% |
| Tensile strength | 830 MPa | 930 MPa | +12% |
| Elongation | 13 % | 11 % | -15% |
| 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 | 51.9 W/m·K | 51.9 W/m·K | 0% |
| Specific heat | 460 J/kg·K | 462 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 SCM440 relative to JIS SCM430. 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 SCM430
- standard
- JIS
JIS SCM440
- standard
- JIS
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