Table - density and specific heat capacity of alumel, chromel, copel, constantan
Physical properties of alloys
| Alloy | Density g/cm³ | t° of melting: | t° of annealing: | Modulus of elasticity, GPa |
| Alumel | 8,67 | 1440°C | 950°C | 130 |
| Kopel | 8,9 | 1150°C | 800-850°C | 166 |
| Constantan | 8,8 | 1250°C | 950°C | 165 |
| Chromel | 8,7 | 1420°C | 800 - 900°C | 186 |
Testing
Alloys must be subjected to tests - tensile, and hydrostatic or non-destructive electrical test. The material must meet the required mechanical properties - tensile strength, yield strength, and relative elongation.
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