Part of Engineering Database. 375 reference tables, deterministic calculators, and Engineering AI. Sign up free
DIN Ck40 vs DIN Ck45
Property comparison of DIN Ck40 and DIN Ck45, both carbon steel.
| Property | DIN Ck40 | DIN Ck45 | Difference |
|---|---|---|---|
| Yield strength | 400 MPa | 320 MPa | -20% |
| Tensile strength | 630 MPa | 535 MPa | -15% |
| Elongation | 18 % | 16 % | -11% |
| 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 | 57.8 W/m·K | 55.9 W/m·K | -3% |
| Specific heat | 462 J/kg·K | 464 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 DIN Ck45 relative to DIN Ck40. Values are taken from the representative row of each material; both materials may have multiple heat treatments or conditions on their individual pages.
Identification
DIN Ck40
- standard
- DIN
- heat treatment
- heat treated
DIN Ck45
- standard
- DIN
- heat treatment
- normalized
What else is in Engineering Database
Iron Engine ↗Engineering AI at ironengine.ai
AI built for engineering. Searches the engineering database, performs calculations, gives source-backed engineering insights.
Get started for free ↗Reference Data375 engineering tablesMaterial properties, pipe and shape dimensions, code tables, and electrical ratings across mechanical, civil, chemical, electrical, materials, and manufacturing engineering.
Browse dataCalculatorsDeterministic engineering calculatorsSizing, checking, and conversion tools that run against the reference tables. Inputs are code-compliant, outputs are traceable to the source standard.
Browse calculators