電熱合金
鐵鉻鋁合金和鎳鉻合金具有較高的電阻率、表麵抗氧化性好,並且在高溫下有較高的強度,有良好的加工性能及可焊性。可廣泛用於冶金、傢用電器、機械制造業作發熱元件和電器行業做電阻材料。由於組織結構不同,在性能上也不盡相同。但作為電熱材料它們都各自具備較多的優點因而得到大量生產和廣泛的使用。
鐵鉻及鎳鉻電熱合金主要性能:
性能property performance/牌號type | 1Cr13AL4 | 0Cr21AL4 | 0Cr25AL5 | |
主要化學成份% main chemical composition % | Cr | 12-15 | 17-21 | 23-26 |
Al | 4-6 | 2-4 | 4.5-6.5 | |
Fe | 餘量rest | 餘量rest | 餘量rest | |
Re | 適量 opportune amount | 適量 opportune amount | 適量 opportune amount | |
Mn | ≤0.7 | ≤0.7 | ≤0.7 | |
Nb | - | - | - | |
元件最高使用溫度℃ max continuous service temp.of element | 950 | 1100 | 1250 | |
密度g/cm3 density | 7.40 | 7.35 | 7.1 | |
熔點℃~ melting point(approx) | 1.25±0.08 | 1.23±0.06 | 1.42±0.07 | |
延伸率% elongation | 15 | 5 | 5 | |
電阻率Ωmm2/m resistivity | 1450 | 1500 | 1500 | |
顯微組織 micrographic structure | 奧氏體A | 奧氏體A | 奧氏體A |
冷軋帶材規格
厚度mm Tickness | 寬度mm Width |
0-0.7 | 6-8 |
0.8-0.9 | 6-11 |
1.0-1.5 | 6-40 |
1.5-2.5 | 15-40 |
合金線材尺寸公差
直徑mm Diameter | 允許偏差mm Tolertance | |
冷拉線材 Clod-drawing wire | 0.1-0.3 | ±0.010 |
>0.3-0.5 | ±0.015 | |
>0.5-1.0 | +0.02-0.03 | |
>1.0-3.0 | ±0.03 | |
>3.0-5.5 | ±0.04 | |
>5.5-6.5 | ±0.05 | |
熱軋盤元 Holt-rolling coil | 7.0-12.0 | +0.3-0.5 |
不同工作溫度時電阻修正系數Ct=Rt/R20
Cr15Ni60元件最高使用溫度1150℃
20℃電阻率1.11-1.15±0.05Ωmm2/m
密度8.2g/cm3
To obtain resisttivity at working temperature multiply by the factor
t℃ | 20 | 100 | 200 | 300 | 400 | 500 | 600 | 700 | 800 | 900 | 1000 |
Ct | 1.000 | 1.013 | 1.029 | 1.062 | 1.062 | 1.074 | 1.078 | 1.083 | 1.089 | 1.097 | 1.105 |
Main characteristics according to the wire diameters
線徑(mm) diameter | 截麵積(mm2) cross sectional area | 每米表麵積(cm2/m) surface per meter | 每米重量(kg/m) weight per meter | 每千克長度(m/kg) length per kilogram | 20℃每米電阻(Ω/m) resistance per meter at20℃ | 20℃每歐長度(m/Ω) lnght per ohm at20℃ |
0.10 | 0.0078 | 3.14 | 0.000064 | 15527 | 142.6 | 0.00701 |
0.12 | 0.0113 | 3.77 | 0.000093 | 10783 | 99.0 | 0.01010 |
0.15 | 0.0177 | 4.71 | 0.000145 | 6901 | 63.4 | 0.01578 |
0.17 | 0.0227 | 5.34 | 0.000186 | 5373 | 44.1 | 0.02270 |
0.19 | 0.0284 | 5.97 | 0.000232 | 4301 | 39.5 | 0.02530 |
0.21 | 0.0346 | 6.60 | 0.000284 | 3521 | 32.3 | 0.03090 |
0.25 | 0.0491 | 7.85 | 0.000403 | 2484 | 22.8 | 0.04380 |
0.27 | 0.0573 | 8.48 | 0.000469 | 2130 | 19.6 | 0.05112 |
0.29 | 0.0661 | 9.11 | 0.000542 | 1846 | 17.0 | 0.05900 |
0.31 | 0.0755 | 9.74 | 0.000619 | 1616 | 14.8 | 0.06739 |
0.35 | 0.0962 | 11.00 | 0.000789 | 1268 | 11.6 | 0.0859 |
0.40 | 0.1257 | 12.57 | 0.00103 | 970 | 8.91 | 0.1122 |
0.45 | 0.1590 | 14.14 | 0.00130 | 767 | 7.04 | 0.1420 |
0.50 | 0.1963 | 15.71 | 0.00161 | 621 | 5.70 | 0.1753 |
0.60 | 0.283 | 18.85 | 0.00232 | 431 | 1.07 | 0.2459 |
0.70 | 0.385 | 22.0 | 0.00316 | 317 | 2.99 | 0.3346 |
0.80 | 0.503 | 25.1 | 0.00412 | 243 | 2.29 | 0.4371 |
0.90 | 0.636 | 28.3 | 0.00522 | 1917 | 1.81 | 0.5532 |
1.00 | 0.785 | 31.4 | 0.00644 | 155.3 | 1.464 | 0.683 |
1.20 | 1.131 | 37.7 | 0.00927 | 107.8 | 1.017 | 0.983 |
1.40 | 1.539 | 44.0 | 0.01262 | 79.2 | 0.747 | 1.339 |
1.60 | 2.01 | 50.3 | 0.01648 | 60.7 | 0.572 | 1.748 |
1.80 | 2.54 | 56.5 | 0.0209 | 47.9 | 0.452 | 2.213 |
2.00 | 3.14 | 62.8 | 0.0258 | 38.8 | 0.366 | 2.732 |
2.20 | 3.80 | 69.1 | 0.0312 | 32.1 | 0.303 | 3.306 |
2.50 | 4.91 | 78.5 | 0.0403 | 24.8 | 0.234 | 4.268 |
2.80 | 6.16 | 88.0 | 0.0505 | 19.80 | 0.1868 | 5.35 |
3.00 | 7.07 | 94.2 | 0.0580 | 17.25 | 0.1627 | 6.15 |
3.50 | 9.62 | 110.0 | 0.0789 | 12.68 | 0.1195 | 8.37 |
4.00 | 12.57 | 125.7 | 0.1031 | 9.70 | 0.0915 | 10.93 |
4.50 | 15.90 | 141.4 | 0.1304 | 7.67 | 0.0723 | 13.83 |
5.00 | 19.63 | 157.1 | 0.1610 | 6.21 | 0.0586 | 17.07 |
5.50 | 23.80 | 172.8 | 0.1945 | 5.13 | 0.0484 | 20.66 |
6.00 | 28.30 | 188.5 | 0.232 | 4.31 | 0.0407 | 24.59 |
6.50 | 33.20 | 204 | 0.272 | 3.68 | 0.0347 | 28.85 |
7.00 | 38.50 | 220 | 0.316 | 3.17 | 0.0299 | 33.46 |
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