电阻丝_铁铬铝材料性能.doc

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1、铁铬铝材料性能牌号性能 1Cr13Al4 0Cr23Al5 0Cr25Al5 0Cr21Al6Nb 0Cr27Al7Mo2主要化学成分Cr12.0-15.020.5-23.523.0-26.021.0-23.026.5-27.8Al4.0-6.04.2-5.34.5-6.55.0-7.06.0-7.0Fe余量余量余量余量余量Re适量适量适量适量适量Nb———加入量0.5—Mo————加入量1.8-2.2最高使用温度℃9501250125013501400熔点℃14501500150015101520密度g/cm37.47.257.17.17.1电阻率μ

2、Ω·m1.25±0.081.35±0.061.42±0.071.45±0.071.53±0.07比热20℃J/g.℃0.4900.4600.4940.4940.494快速寿命值h/℃温度℃9001250125013501400小时h≥80≥80≥80≥80≥80导热系数KJ/m·h·℃52.060.246.146.145.2膨胀系数a×10-6/℃15.415.016.016.016.0抗拉强度Mpa588-735637-784637-784637-784637-784延伸率%≥16≥12≥12≥12≥10反复弯曲次数F/R≥5≥5≥5≥5≥5硬度H·

3、B200-260200-260200-260200-260200-260显微组织铁素体铁素体铁素体铁素体铁素体牌号性能 1Cr13Al4 0Cr23Al5 0Cr25Al5 0Cr21Al6Nb 0Cr27Al7Mo2主要化学成分Cr12.0-15.020.5-23.523.0-26.021.0-23.026.5-27.8Al4.0-6.04.2-5.34.5-6.55.0-7.06.0-7.0Fe余量余量余量余量余量Re适量适量适量适量适量Nb———加入量0.5—Mo————加入量1.8-2.2最高使用温度℃9501250125013501400熔点

4、℃14501500150015101520密度g/cm37.47.257.17.17.1电阻率μΩ·m1.25±0.081.35±0.061.42±0.071.45±0.071.53±0.07比热20℃J/g.℃0.4900.4600.4940.4940.494快速寿命温度℃9001250125013501400值h/℃小时h≥80≥80≥80≥80≥80导热系数KJ/m·h·℃52.060.246.146.145.2膨胀系数a×10-6/℃15.415.016.016.016.0抗拉强度Mpa588-735637-784637-784637-7846

5、37-784延伸率%≥16≥12≥12≥12≥10反复弯曲次数F/R≥5≥5≥5≥5≥5硬度H·B200-260200-260200-260200-260200-260显微组织铁素体铁素体铁素体铁素体铁素体