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Ferro-Chromium-Aluminium alloy wires

0Cr25Al5 Alloy Name:1Cr13Al4, 0Cr25Al5, 0Cr21Al6, 0Cr23Al5, 1Cr20Al3(0Cr21Al4, 0Cr19Al3), 0Cr21Al6Nb, 0Cr27Al7Mo2
Specification:Bright finished wires from 0.07mm-1.6mm;Cold drawing wires from 1.0mm-10mm

The heat resistance of Iron-chromium-aluminum electrothermal wire goes up with the increase of chrome and aluminum contents. It has excellent oxidation resistance, Anti-sulfur and anti-carburizing properties. Meanwhile with a light specific gravity, high surface load, high resistance, high working temperature, long service life, low price and a series of advantages, it is widely used in industrial electric furnace, metallurgy, machinery, household appliances and other industries to make eletrical heating elements.

Main properties and characteristics of Fe-Cr-Al high resistance heating alloy materials
Alloy Name
Properties
1Cr13Al4 0Cr25Al5 0Cr21Al6 0Cr23Al5 1Cr20Al3 0Cr21Al6Nb 0Cr27Al7Mo2
Main
Chemical
Components
Cr 12.0-15.0 23.0-26.0 19.0-22.0 20.5-23.5 18.0-21.0 21.0-23.0 26.5-27.8
Al 4.0-6.0 4.5-6.5 5.0-7.0 4.2-5.3 3.0-4.2 5.0-7.0 6.0-7.0
Re Opportune Opportune Opportune Opportune Opportune Opportune Opportune
Fe Rest Rest Rest Rest Rest Rest Rest
Nb0.5 Mo1.8-2.2
Maximum operating temperature 950 1250 1250 1250 1100 1350 1400
Resistivity 20ºC (μΩ·m) 1.25 1.42 1.42 1.35 1.23 1.45 1.53
Density (g/cm3) 7.40 7.10 7.16 7.25 7.35 7.10 7.10
Coefficient of heat conductivity(KJ/m·h·ºC) 52.7 46.1 63.2 60.2 46.9 46.1 45.2
Coefficient of linear expansion(α×10-6/ºC) 15.4 16.0 14.7 15.0 13.5 16.0 16.0
Melting point(ºC) 1450 1500 1500 1500 1500 1510 1520
Tensile strength(N/mm2) 580-680 630-780 630-780 630-780 600-700 650-800 680-830
Elongation(%) >16 >12 >12 >12 >12 >12 >10
Reduction of area(%) 65-75 60-75 65-75 65-75 65-75 65-75 65-75
Bending times (F/R) >5 >5 >5 >5 >5 >5 >5
Hardness(H.B.) 200-260 200-260 200-260 200-260 200-260 200-260 200-260
Continuous operating temperature(Hours/ºC) -- ≥80/1300 ≥80/1300 ≥80/1300 ≥80/1250 ≥50/1350 ≥50/1350
Microscopic structure Ferrite Ferrite Ferrite Ferrite Ferrite Ferrite Ferrite
Magnetism Magnetic Magnetic Magnetic Magnetic Magnetic Magnetic Magnetic

Specification and characteristics of Fe-Cr-Al alloy series(1)
Diameter
(mm)
Sectional area (mm2) 1Cr13Al4 0Cr25Al5 0Cr21Al6
Resistivity(μΩ • m 1.25±0.08) Resistivity(μΩ • m 1.42±0.07) Resistivity(μΩ • m 1.42±0.07)
Ohm per meter
(20ºC Ω/m)
Meter per kg
(m/kg)
Kg per meter
(kg/m)
Ohm per meter
(20ºC Ω/m)
Meter per kg
(m/kg)
Kg per meter
(kg/m)
Ohm per meter
(20ºC Ω/m)
Meter per kg
(m/kg)
Kg per meter
(kg/m)
0.10 0.0078 159.2 17206 0.0000581 180.6 17933 0.0000558 180.6 17905 0.0000558
0.12 0.0113 110.5 11949 0.0000836 125.6 12453 0.0000803 125.6 12360 0.0000809
0.15 0.0177 70.7 7647 0.000131 80.4 7970 0.000125 80.4 7891 0.000128
0.17 0.0227 55.1 5954 0.000168 62.6 6205 0.000161 62.6 6153 0.000163
0.19 0.0284 44.1 4766 0.000210 50.1 4959 0.000201 50.1 4918 0.000203
0.21 0.0346 36.1 3901 0.000256 41.0 4066 0.000246 41.0 4037 0.000248
0.25 0.0491 25.5 2753 0.000363 28.9 2870 0.000346 28.9 2844 0.000352
0.27 0.0573 21.8 2360 0.000424 24.8 2460 0.000407 24.8 2437 0.000410
0.29 0.0661 18.9 2046 0.000489 21.5 2132 0.000469 21.5 2113 0.000473
0.31 0.0755 16.6 1790 0.000559 18.8 1866 0.000536 18.8 1849 0.000541
0.35 0.0962 13.0 1405 0.000712 14.8 1464 0.000683 14.8 1452 0.000689
0.40 0.1257 9.95 1075 0.000930 11.3 1121 0.000892 11.3 1111 0.000900
0.45 0.1590 7.86 850 0.001177 8.93 886 0.001129 8.93 878 0.001138
0.50 0.1963 6.37 688 0.001453 7.23 717 0.001394 7.23 711 0.001406
0.60 0.283 4.42 480 0.002092 5.02 498 0.00201 5.02 494 0.002026
0.70 0.385 3.25 351 0.002848 3.69 366 0.00273 3.69 362 0.002751
0.80 0.503 2.49 269 0.003720 2.83 280 0.00357 2.83 278 0.003601
0.90 0.636 1.96 212 0.004708 2.23 221 0.00452 2.23 220 0.004554
1.00 0.785 1.59 172 0.005812 1.808 179.5 0.00557 1.808 177.9 0.005620
1.20 1.131 1.11 119 0.008369 1.256 124.5 0.00803 1.256 123.5 0.008098
1.40 1.539 0.812 87.8 0.001139 0.922 91.5 0.01093 0.922 90.8 0.01102
1.60 3.01 0.622 67.2 0.01488 0.706 70.1 0.01427 0.706 69.5 0.01439
1.80 2.54 0.491 53.1 0.01883 0.558 55.5 0.01803 0.558 54.9 0.01819
2.00 3.14 0.398 43.0 0.02325 0.452 44.8 0.0223 0.452 44.5 0.02248
2.20 3.80 0.329 35.5 0.02813 0.374 37.0 0.0270 0.374 36.8 0.02720
2.50 4.91 0.255 27.5 0.03632 0.289 28.7 0.0349 0.289 28.4 0.03516
2.80 6.16 0.203 21.9 0.04557 0.231 22.9 0.0437 0.231 22.7 0.04411
3.00 7.07 0.1768 19.1 0.05231 0.201 19.92 0.0502 0.201 19.8 0.05062
3.50 9.62 0.1299 14.0 0.07120 0.1476 14.64 0.0683 0.1476 14.5 0.06888
4.00 12.57 0.0995 10.75 0.09299 0.1130 11.21 0.0892 0.1130 11.1 0.09000
4.50 15.90 0.0786 8.50 0.1177 0.0893 8.86 0.1129 0.0893 8.78 0.1138
5.00 19.63 0.0637 6.88 0.1453 0.0723 7.17 0.1394 0.0723 7.11 0.1406
5.50 23.80 0.0526 5.69 0.1758 0.0598 5.92 0.1690 0.0598 5.87 0.1704
6.00 28.30 0.0442 4.78 0.2092 0.0502 4.98 0.201 0.0502 4.94 0.2026
6.50 33.20 0.0377 4.07 0.2456 0.0428 4.24 0.236 0.0428 4.21 0.2377
7.00 38.50 0.0325 3.51 0.2848 0.0369 3.66 0.273 0.0369 3.63 0.2757

Specification and characteristics of Fe-Cr-Al alloy series(2)
Diameter
(mm)
Sectional area(mm2) 0Cr23Al5 1Cr20Al3
Resistivity μΩ • m 1.35±0.06 Resistivity μΩ • m 1.23±0.06
Ohm per meter
(20ºC Ω/m)
Meter per kg
(m/kg)
Kg per meter
(kg/m)
Ohm per meter
(20ºC Ω/m)
Meter per kg
(m/kg)
Kg per meter
(kg/m)
0.10 0.0078 173.1 17683 0.0000566 156.6 17452 0.0000573
0.12 0.0113 119.5 12206 0.0000819 108.8 12033 0.0000831
0.15 0.0177 76.4 7793 0.000128 69.6 7692 0.000130
0.17 0.0227 59.5 6076 0.000165 54.2 5988 0.000167
0.19 0.0284 47.5 4854 0.00206 43.4 4785 0.000209
0.21 0.0346 35.5 3986 0.000276 35.5 3937 0.000254
0.25 0.0491 27.5 2809 0.000356 25.1 2770 0.000361
0.27 0.0573 21.9 2407 0.000447 21.5 2375 0.000421
0.29 0.0661 19.1 2087 0.000513 18.6 2058 0.000486
0.31 0.0755 16.8 1827 0.000583 16.3 1802 0.000555
0.35 0.0962 14.0 1434 0.000697 12.8 1414 0.000707
0.40 0.1257 10.7 1097 0.000911 9.79 1082 0.000924
0.45 0.1590 8.49 867 0.00115 7.73 855 0.00117
0.50 0.1963 6.88 703 0.00142 6.26 694 0.00144
0.60 0.283 4.77 496 0.00205 4.35 480 0.00208
0.70 0.385 3.51 358 0.00279 3.20 353 0.00283
0.80 0.503 2.69 274 0.00365 2.45 270 0.003697
0.90 0.636 2.12 217 0.00461 1.93 213 0.004675
1.00 0.785 1.72 176 0.00569 1.57 173 0.005770
1.20 1.131 1.194 122 0.00820 1.09 120 0.008313
1.40 1.539 0.877 89.6 0.01116 0.799 88.4 0.01131
1.60 3.01 0.672 68.6 0.01457 0.612 67.7 0.01477
1.80 2.54 0.532 54.3 0.01842 0.483 53.56 0.01867
2.00 3.14 0.430 43.9 0.02277 0.392 43.33 0.02308
2.20 3.80 0.355 36.3 0.02755 0.324 35.80 0.02793
2.50 4.91 0.275 28.1 0.03849 0.251 27.71 0.03609
3.00 7.07 0.191 19.5 0.05126 0.1740 19.25 0.05196
3.50 9.62 0.140 14.3 0.06975 0.1278 14.14 0.07071
4.00 12.57 0.107 11.0 0.09113 0.0979 10.82 0.09239
4.50 15.90 0.0849 8.67 0.1153 0.0773 8.55 0.1169
5.00 19.63 0.0688 7.03 0.1423 0.0626 6.93 0.1443
5.50 23.80 0.0568 5.80 0.1726 0.0518 5.72 0.1749
6.00 28.30 0.0477 4.88 0.2052 0.0435 4.81 0.2080
6.50 33.20 0.0407 4.15 0.2407 0.0371 4.09 0.2440
7.00 38.50 0.0351 3.58 0.2791 0.0320 3.53 0.2830

Specification and characteristics of Fe-Cr-Al alloy series(3)
Diameter
(mm)
Sectional area(mm2) 0Cr21Al6Nb 0Cr27Al7Mo2
Resistivity(μΩ • m 1.45±0.07) Resistivity(μΩ • m 1.53±0.07)
Ohm per meter
(20ºC Ω/m)
Meter per kg
(m/kg)
Kg per meter
(kg/m)
Ohm per meter
(20ºC Ω/m)
Meter per kg
(m/kg)
Kg per meter
(kg/m)
0.10 0.0078 184.6 17933 0.0000558 194.8 17933 0.0000558
0.12 0.0113 128.2 12453 0.0000803 135.3 12453 0.0000803
0.15 0.0177 82.1 7970 0.000125 80.6 7970 0.000125
0.17 0.0227 63.9 6205 0.000161 67.4 6205 0.000161
0.19 0.0284 51.1 4968 0.000201 54.0 4968 0.000201
0.21 0.0346 41.9 4066 0.000246 44.2 4066 0.000246
0.25 0.0491 29.5 2870 0.000349 31.2 2870 0.000349
0.27 0.0573 25.0 2460 0.000407 26.7 2460 0.000407
0.29 0.0661 22.0 2131 0.000469 23.2 2132 0.000469
0.31 0.0755 19.2 1866 0.000536 20.3 1866 0.000536
0.35 0.0962 15.1 1464 0.000683 15.9 1464 0.000683
0.40 0.1257 11.54 1121 0.000892 12.19 1121 0.000892
0.45 0.1590 9.12 886 0.001129 9.62 886 0.001129
0.50 0.1963 7.38 717 0.001394 7.79 717 0.001394
0.60 0.283 5.13 498 0.00201 5.41 498 0.00201
0.70 0.385 3.77 366 0.00273 3.98 366 0.00273
0.80 0.503 2.88 280 0.00357 3.04 280 0.00357
0.90 0.636 2.28 221 0.00452 2.41 221 0.00452
1.00 0.785 1.85 179.5 0.00557 1.95 179.5 0.00557
1.20 1.131 1.282 124.5 0.00803 1.35 124.5 0.00803
1.40 1.539 0.942 91.5 0.01093 0.994 91.5 0.01093
1.60 3.01 0.721 70.1 0.01427 0.761 70.1 0.01427
1.80 2.54 0.570 55.5 0.01803 0.601 55.5 0.01803
2.00 3.14 0.462 44.8 0.0229 0.487 44.8 0.0229
2.20 3.80 0.381 37.0 0.0270 0.402 37.0 0.0270
2.50 4.91 0.295 28.7 0.0349 0.312 28.7 0.0349
3.00 7.07 0.205 19.92 0.052 0.216 19.92 0.052
3.50 9.62 0.1510 14.64 0.0683 0.159 14.64 0.0683
4.00 12.57 0.1154 11.21 0.0892 0.1218 11.21 0.0892
4.50 15.90 0.0912 8.86 0.1129 0.0962 8.86 0.1129
5.00 19.63 0.0738 7.17 0.1394 0.0779 7.17 0.1394
5.50 23.80 0.0610 5.92 0.1690 0.0644 5.92 0.1690
6.00 28.30 0.0513 4.98 0.201 0.0541 4.98 0.201
6.50 33.20 0.0437 4.24 0.236 0.0461 4.24 0.236
7.00 38.50 0.0377 3.66 0.273 0.0398 3.66 0.273