合金电阻丝一、材料 Ni80Cr20OCr27Al7Mo2OCr21Al7NbOCr25Al5OCr21Al6ICr21Al4Cr25Ni20ICr18Ni9TiGH140Cr15Ni60Cr30Ni70  二、产品性能  (1)Ni80Cr20镍铬合金：具有变形性，热稳定性，机械强度好，在热态时有较好的抗震、抗氧化能力等优点。广泛应用于化工、机械、冶金、国防等工业作电炉加热及热处理，也是电子、轻纺等工业电器中及电子、电阻器元件之材料。(2)Ni30Cr20、Ni25Cr20镍铬铁高电阻电热合金：具有加工性能好（塑性好），焊接性好、抗腐蚀、热态时有较好的抗震、抗氧化能力，使用温度在1100度以下可代替Ni80Cr20电阻合金使用。(3)铁铬铝合金：是一种新型的高电阻电热合金，具有电阻率高、重量轻、用料省、价格低等优点。但塑性差，经高温加热晶粒长大，易脆性，不易焊接等。如能合理使用，是一种理想的电热材料。 三、参数列表 性能\牌号OCr13Al4OCr25Al5OCr21Al6OCr21Al6NbOCr27Al7MO2Cr15Ni60Cr20Ni80Cr20Ni30主要化学成份%Cr12-1523-2619-2221-2326.5-27.515-1820-2320Al4-64.5-6.55-75-76-7   Fe余量余量余量余量余量余量 余量Re适量适量适量适量适量适量适量适量Mo    1.8-2.2   No   0.5    Ni     58-62余量28-32元件最高使用温度℃9501250125013501400110011501100密度g/m37.47.17.17.17.18.28.47.9电阻率Ωm㎡/m1.25±0.051.42±0.051.42±0.051.45±0.051.53±0.051.13±0.051.14±0.051.04±0.05电阻温度系数X10/℃15555-1148.5 熔点℃14501500150015101520139014001390抗拉强度Mpa588-735637-784637-784637-784686-784637-784637-784637-784延伸率%＞14＞12＞12＞12＞12＞20＞20＞20断面收缩率%65-7565-7565-7565-7565-7560-7560-7565-75弯曲次数＞5＞5＞5＞5＞5   硬度200-260200-260200-260200-260200-260130-150130-150130-150组织铁素体F铁素体F铁素体F铁素体F铁素体F奥氏体A奥氏体A奥氏体A磁性磁性磁性磁性磁性磁性非磁性非磁性非磁性合金线材重量、长度、电阻对照表线径mm截面积m㎡每米重量kg/m20每米电阻（Ω/m）OCr13Al4OCr25Al5OCr21Al6OCr21Al6NbOCr27Al7MO2Cr15Ni60Cr20Ni80Cr20Ni30OCr13Al4OCr25Al5OCr21Al6OCr27Al7MO2OCr21Al6NbCr15Ni60Cr20Ni80Cr20Ni300.10.20.30.40.50.60.81.01.21.41.61.82.02.22.42.62.83.03.23.54.04.55.05.56.06.57.08.00.00790.03140.0707.012570.19640.28270.50270.78541.1311.5392.0112.5453.1423.8014.5245.3096.1587.0698.0439.62112.5715.9019.6423.7628.2733.1738.4850.240.000060.000230.000520.000930.00150.00210.00370.00580.00840.0110.0150.0190.0230.0280.0330.0390.0460.0520.0600.0710.0930.1180.1450.1750.2090.2450.2840.3710.000060.000220.000500.000890.00140.00200.00360.00560.00800.0110.0140.0180.220.0270.0320.0380.0440.0500.0570.0680.0890.1130.1390.1680.2010.2350.2730.3600.000060.00260.000580.001030.001610.002320.004120.00640.00920.01260.01640.02090.02570.03120.0370.0440.0500.0580.0660.0790.1030.1300.1610.1950.2320.2720.3150.3600.000070.000260.000590.001060.001650.002370.004220.00660.00950.01290.01690.02140.02640.03190.0380.0450.0520.0590.0680.0810.1050.1340.1650.1990.2370.2790.3230.4220.000060.000250.000560.000990.00160.00220.00390.00620.00890.01220.01590.02010.02480.0300.0360.0420.0490.0560.0640.0760.0990.1260.1550.1880.2230.2620.3030.397160.440.1317.8210.026.4164.4572.5071.6041.1140.81870.62660.49510.40100.33150.27850.23730.20460.17820.15760.13100.10020.07920.06420.05300.04460.03760.03270.0248178.344.5919.8011.147.1284.9522.7851.8721.2380.90970.69620.55010.44560.36830.30950.26370.22730.19800.17410.14550.11140.08810.07130.05890.04950.04280.03640.0282191.044.7721.2211.937.6385.3062.9841.9101.3260.97470.74590.58940.47750.39460.33160.28250.24360.21220.18560.15590.11930.09430.07640.06310.05310.04610.03900.0304183.546.1720.5011.537.3825.1292.8841.8461.2820.94210.72100.56970.46140.38140.32050.27310.23540.20510.18020.15070.11530.09110.07380.06100.05120.04370.03760.0288131.633.1214.718.275.2953.6782.0681.3240.9190.67570.51710.40860.33090.27360.22980.19580.16880.14710.12930.10800.08270.06540.05290.04370.03670.03130.02700.0207140.135.0115.568.755.6043.8912.1881.4010.9720.71470.54700.43220.35010.28940.24310.20270.17860.15560.13800.11430.08750.06910.05600.04630.03890.03400.02930.0224141.335.3315.708.835.6553.9262.2081.4130.98140.72120.52200.43610.35330.29200.24540.20910.18030.15700.13860.11540.08830.06980.05650.04670.03960.03430.02960.0226