Resistance wire material - iron chromium aluminum alloy

Date : 2024-07-26Source: Unknown

  • Nickel-chromium alloy wire main technical performance:
    Brand Cr20Ni80 Cr30Ni70 Cr15Ni60 Cr20Ni35 Cr20Ni30
    Melting point ℃ 1400 1380 1390 1390 1390
    Density g/cm3 8.40 8.10 8.20 7.90 7.90
    Resistivity μΩ·m,20℃ 1.09 + / - 0.05 to 1.18 + 0.05 + / - 0.05 1.11 1.04 1.04 + 0.05 + / - 0.05
    Elongation % ≥20 ≥20 ≥20 ≥20 ≥20 ≥20
    Specific heat J/g. C 0.440 0.461 0.494 0.500 0.500

 

  • The main advantages and disadvantages of Fe-Cr aluminum alloy series: Advantages: Fe-Cr aluminum electrothermal alloy has a high use temperature, the maximum use temperature can reach 1400 degrees, (0Cr21A16Nb, 0Cr27A17Mo2, etc.), long service life, high surface load, good oxidation resistance, high resistivity, cheap and so on. Disadvantages: mainly low high temperature strength, with the use of temperature increases its plasticity, the component is easy to deform, not easy to bend and repair. So now our company in the selection of resistance wire basically no longer choose iron chromium aluminum alloy, and mainly choose nickel chromium alloy resistance wire, iron chromium aluminum alloy is the largest use of the electric furnace above the use.
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