 | Chemical composition (nominal), % | C | Cr | Al | Rare earth elements | Fe | max. 0.02 | 20 | 5.5 | 0.02 | balance |
Mechanical properties (nominal values at 20°C ) | Cond. | Proof strength
Rp0.2
MPa | Tensile strength
Rm
MPa | Elong
A25mm
% | Annealed | 510 | 670 | >15 | Cold rolled | 1000 | 1050 | <1 |
Mechanical propertiesat elevated temperatures | Temp.
°C | Proof strength
Rp0.2MPa | Tensile strenght
Rm
MPa | Elong
A
% | 200 | 325 | 580 | 25 | 300 | 310 | 570 | 25 | 400 | 305 | 535 | 25 | 500 | 285 | 385 | 30 | 600 | 110 | 335 | 60 | 700 | 50 | 140 | 90 | 800 | 40 | 70 | 105 | 900 | 20 | 40 | 150 |
Physical properties (nominal values) | Temp
°C | Resistivity
µWm | Specific heat capacity
J/kg°C | Thermal conductivity W/m°C | 20 | 1.38 | 481 | 11.7 | 100 | 1.38 | 517 | 12.8 | 200 | 1.38 | 559 | 14.3 | 400 | 1.40 | 663 | 17.1 | 556* | 1.44 | 918 | 19.5 | 600 | 1.44 | 778 | 19.7 | 800 | 1.46 | 715 | 22.9 |
Thermal expansion | Temp.
°C | Per °C
x10 -6 | 20-100 | 11.7 | 20-200 | 12.1 | 20-400 | 12.6 | 20-600 | 13.3 | 20-800 | 14.3 | 20-1000 | 15.8 |
Melting point1470°C Density7,3 g/cm 3 | |
