铬高电阻电热合金具有电阻率高、电阻温度系数小、使用温度高的特点。
在高温下耐腐蚀性好，尤其适合在含有硫和硫化物气氛中使用，且价格低廉，是工业电炉、家用电器、远红外装置中理想的发热材料。
   常用炉条理论重量表（井式炉）材质功率(kw)线径(mm)重量（kg）备注0Cr25Al5254.014 0Cr25Al5304.518.5 0Cr25Al5364.515.5 0Cr25Al5365.022.5 0Cr25Al5554.531 0Cr25Al5604.537 0Cr25Al5754.06.01434 0Cr25Al5904.555+18.5 0Cr25Al51055.044 箱式炉0Cr25Al541.50.8220V0Cr25Al561.81.2220V0Cr25Al581.81.8380V0Cr25Al5102.02.2380V0Cr25Al5122.22.6380V0Cr25Al5154.07.5380V0Cr25Al5205.014380V0Cr25Al5304.518.5380V0Cr25Al5455.527380V0Cr25Al5604.537380V0Cr25Al5755.044380V0Cr25Al51056.060380V 电炉丝主要技术性能：（点击查看详细参数）牌号1Cr13A141Cr21A140Cr21A160C*A150Cr25A150Cr21A16Nb0Cr27A17Mo2性能       主要化学成分%Cr12.0-15.017.0-21.019.0-22.020.0-23.523.0-26.021.0～23.026.5～27.8AI4.0～6.02.0～4.05.0～7.04.2～5.34.5～6.55.0～7.06.0～7.0Fe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      加入量Nb:0.5加入量Nb:0.5元件*使用温度℃950110012501250125013501400熔点℃1450150015001500150015101520密度g/cm37.407.357.167.257.107.107.10电阻率μΩ·m，20℃1.25±0.081.23±0.061.42±0.071.35±0.061.42±0.071.45±0.071.53±0.07抗拉强度Mpa588～735637～784637～784637～784637～784637～784686～784延伸率%≥16≥12≥12≥12≥12≥12≥10反复弯曲次数≥5≥5≥5≥5≥5≥5≥5快速寿命h/℃——≥80/1250≥80/1300≥80/1300≥80/1300≥80/1350≥80/1350比热J/g.℃0.4900.4900.5200.4600.4940.4940.494导热系数KJ/m.h℃52.746.963.260.246.146.145.2线胀系数a×10-6/℃（20～1000℃15.413.514.715.016.016.016.0硬度HB200～260200～260200～260200～260200～260200～260200～260显微组织铁素体铁素体铁素体铁素体铁素体铁素体铁素体磁性磁性磁性磁性磁性磁性磁性磁性电炉丝设计参数：（点击查看详细参数）线径(mm)截面积(mm2)每米表面积cm2/m0Cr25A150Cr21A16Nb0Cr27A17Mo2每米重量kg/m每米电阻Ω/m,20℃每米重量kg/m每米电阻Ω/m,20℃每米重量kg/m每米电阻Ω/m,20℃0.100.0078543.1420.00005576180.80.00005576184.60.00005576194.80.120.011313.7700.00008030125.60.00008030128.20.00008030135.30.150.017674.7120.000125580.360.000125582.050.000125586.580.170.022705.3410.000161262.560.000161263.880.000161267.410.190.028355.9690.000201350.080.000201351.140.000201353.960.210.034646.5970.000245941.000.000245941.860.000245944.170.250.049097.8540.000348528.930.000348529.540.000348531.170.270.057268.4820.000406524.800.000406525.330.000406526.720.290.066059.1110.000469021.500.000469021.950.000469023.160.310.075489.7390.000535918.810.000535919.210.000535920.270.350.0962111.000.000683014.760.000683015.070.000683015.900.400.125712.570.000892211.300.000892211.540.000892212.180.450.159014.140.0011298.9280.0011299.1170.0011299.6200.500.196315.710.0013947.2320.0013947.3850.0013947.7920.600.282718.850.0020075.0220.0020075.1280.0020075.4110.700.384821.990.0027323.6900.0027323.7680.0027323.9760.800.502725.130.0035692.8250.0035692.8850.0035693.0440.900.636228.280.0045172.2320.0045172.2790.0045172.4051.000.785431.420.0055761.8080.0055761.8460.0055761.9481.201.13137.700.0080301.2560.0080301.2820.0080301.3531.401.53943.980.010930.92240.010930.94190.010930.99391.602.01150.270.014280.70630.014280.72120.014280.76101.802.54556.550.018070.55800.018070.56980.018070.60132.003.14262.830.022310.45200.022310.46150.022310.48702.203.80169.120.026990.37360.026990.38140.026990.40252.504.90978.540.034850.28930.034850.29540.034850.31172.806.15887.960.043720.23060.043720.23550.043720.24853.007.06994.250.050190.20090.050190.20510.050190.21653.509.621110.00.068310.14760.068310.15070.068310.15904.0012.57125.70.089220.11300.089220.11540.089220.12184.5015.90141.10.11290.089280.11290.091170.11290.096205.0019.63157.10.13940.072320.13940.073850.13940.077925.5023.76172.80.16870.059770.16870.061030.16870.064406.0028.27188.50.20070.050220.20070.051280.20070.054116.5033.18204.20.23560.042790.23560.043700.23560.046117.0038.48219.90.27320.036900.27320.037680.27320.03976产品规格冷拉合金线材直径φ1.0-φ10.0mm热轧合金盘元直径φ8.0-φ12.0mm冷轧合金带材厚度0.5-3.5mm冷轧合金带材宽度5.0-45.0mm热轧合金带材厚度3.0-6.0mm热轧合金带材宽度12.0-45.0mm绕轴光亮细丝直径φ0.1-φ1.0mm绕轴光亮扁丝厚度0.08-1.50mm绕轴光亮扁丝宽度0.5-5.0mm 交货状态1、供货状态线材和盘元以白亮或者氧化色软态供应。
带材除特殊要求外，一般以退火后的氧化色供应。
细丝和扁丝经保护气体退火后，以光亮软态供应。
2、产品包装线材和带材以打包布包扎，成卷供应。
细丝和扁丝，绕轴塑封供应。
3、出口产品及用户有特殊要求者，协商解决。
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