Resistance Alloy Cr30Ni70
JIS | UNS | DIN | ASTM B344 | GB/T 1234 |
/ | N06008 | NiCr7030 / 2.4658 | / | Cr30Ni70 |
Cr30Ni70 is a nickel-chromium heating conductor alloy for operating temperatures of up to 1250 °C and often contains additives of rare earths for a higher resistance to oxidation, especially with frequent switching operations or broad temperature variations. The resistance to atmospheric corrosion at 20 °C is high up to the upper operating temperature the resistance to air and other oxygen-containing gases as well as to nitrogen-containing low-oxygen gases is high as well, yet it is low to oxidizing as well as reducing gases containing sulphur. The resistance to carbonizing is high.
Density (g/cm3) | 8.1 | Resistivity(μΩ/m) | 1.18 | ||
Thermal conductivity W/(m.K) | 14 | Coefficient of thermal expansion 10-6/K | 17 | ||
Max. Working Temperature ℃ | 1250 | Melting point(℃) | 1380 | ||
Tensile strength(Mpa) | Elongation(%) | Elongation(%) |
- | Dia. ＞3.0mm(Wire) | Dia. 0.1-3.0mm(Wire) |
- | Thk. ＞ 0.2mm(Strip) | Thk. ＞ 0.2mm(Strip) |
min. 650 | min . 25 | min. 20 |