电热合金规格及性能.doc

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1、铁铬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。铁铬铝电热合金丝主要技术性能：牌号1Cr13AL41Cr21AL40Cr21AL60Cr23AL50Cr25AL50Cr21AL6Nb0Cr27AL7Mo2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

2、.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元件最高使用温度℃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～

3、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HB200～260200～260200～260200～260200～26

4、0200～260200～260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铁铬铝电热合金丝主要设计参数:线径(mm)截面积(mm2)每米表面积cm2/m0Cr25AL50Cr21AL6Nb0Cr27AL7Mo2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

5、.20.00008030135.30.150.017674.7120.000125580.360.000125582.050.000125586.580.170.022705.3410.000161262.560.000161263.880.000161267.410.190.028355.9690.000201350.080.000201351.140.000201353.960.210.034646.5970.000245941.000.000245941.860.000245944.170.250.049097.8540.000348528.930.000348

6、529.540.000348531.170.270.057268.4820.000406524.800.000406525.330.000406526.720.290.066059.1110.000469021.500.000469021.950.000469023.160.310.075489.7390.000535918.810.000535919.210.000535920.270.350.0962111.000.000683014.760.000683015.070.000683015.900.400.125712.570.000892211.300.0008

7、92211.540.000892212.180.450.159014.140.0011298.9280.0011299.1170.0011299.6200.500.196315.710.0013947.2320.0013947.3850.0013947.7920.600.282718.850.0020075.0220.0020075.1280.0020075.4110.700.384821.990.0027323.6900.0027323.7680.0027323.9760.800.502725.130.0035692.8250.0035692.88