鎳鉻絲主要技術(shù)性能:牌號Cr20Ni80Cr30Ni70Cr15Ni60Cr20Ni35Cr20Ni30性能?????主要化學成分%Ni余量余量55.0~61.034.0~37.030.0~34.0Cr20.0~23.028.0~31.015.0~18.0
?18.0~21.018.0~21.0Fe≤1.0
?≤1.0
?余量余量余量元件使用溫度℃
?12001250115011001100熔點℃
?14001380139013901390密度g/cm3
?8.408.108.207.907.90電阻率μΩ·m,20℃
?1.09±0.05
?1.18±0.05
?1.11±0.05
?1.04±0.05
?1.04±0.05延伸率%
?≥20
?≥20
?≥20
?≥20
?≥20比熱J/g.℃
?0.440
?0.461
?0.494
?0.500
?0.500導熱系數(shù)KJ/℃
?60.345.245.243.843.8線脹系數(shù)a×10-6/℃(20~1000℃)
?18.017.017.019.019.0顯微組織
?奧氏體奧氏體奧氏體奧氏體奧氏體磁性非磁性非磁性非磁性非磁性非磁性