Main technical skills of iron-chromium-aluminum electric heating alloy wire:
Grade/Performance
1Cr13AL4
1Cr21AL4
0Cr21AL6
0Cr23AL5
0Cr25AL5
0Cr21AL6Nb
0Cr27AL7Mo2
Cr
12.0-15.0
17.0-21.0
19.0-22.0
20.0-23.5
23.0-26.0
21.0～23.0
26.5～27.8
AI
4.0～6.0
2.0～4.0
5.0～7.0
4.2～5.3
4.5～6.5
5.0～7.0
6.0～7.0
Fe
margin
margin
margin
margin
margin
margin
margin
Fe
Right amount
Right amount
Right amount
Right amount
Right amount
Right amount
Right amount
Adding amount Nb: 0.5
Adding amount Nb: 0.5
The highest use temperature of the component ℃
950
1100
1250
1250
1250
1350
1400
Melting point °C
1450
1500
1500
1500
1500
1510
1520
Density g/cm3
7.40
7.35
7.16
7.25
7.10
7.10
7.10
Resistivity μΩ·m, 20℃
1.25±0.08
1.23±0.06
1.42±0.07
1.35±0.06
1.42±0.07
1.45±0.07
1.53±0.07
Tensile strength Mpa
588～735
637～784
637～784
637～784
637～784
637～784
686～784
Elongation%
≥16
≥12
≥12
≥12
≥12
≥12
≥10
Number of repeated bending
≥5
≥5
≥5
≥5
≥5
≥5
≥5
Fast life h/℃
——
≥80/1250
≥80/1300
≥80/1300
≥80/1300
≥80/1350
≥80/1350
Specific heat J/g.℃
0.490
0.490
0.520
0.460
0.494
0.494
0.494
Thermal conductivity KJ/m.h℃
52.7
46.9
63.2
60.2
46.1
46.1
45.2
Linear expansion coefficient
a×10-6/℃
(20～1000℃)
15.4
13.5
14.7
15.0
16.0
16.0
16.0
Hardness HB
200～260
200～260
200～260
200～260
200～260
200～260
200～260
Microstructure
Ferrite
Ferrite
Ferrite
Ferrite
Ferrite
Ferrite
Ferrite
magnetic
magnetic
magnetic
magnetic
magnetic
magnetic
magnetic
magnetic
Main design parameters of iron-chromium-aluminum electric heating alloy wire:
Wire diameter
(mm)
Cross-sectional area
(mm2)
Per meter
Surface area
cm2/m
0Cr25AL5
0Cr21AL6Nb
0Cr27AL7Mo2
Weight per meter
kg/m
Resistance per meter
Ω/m,20℃
Weight per meter
kg/m
Resistance per meter
Ω/m,20℃
Weight per meter
kg/m
Resistance per meter
Ω/m,20℃
0.10
0.007854
3.142
0.00005576
180.8
0.00005576
184.6
0.00005576
194.8
0.12
0.01131
3.770
0.00008030
125.6
0.00008030
128.2
0.00008030
135.3
0.15
0.01767
4.712
0.0001255
80.36
0.0001255
82.05
0.0001255
86.58
0.17
0.02270
5.341
0.0001612
62.56
0.0001612
63.88
0.0001612
67.41
0.19
0.02835
5.969
0.0002013
50.08
0.0002013
51.14
0.0002013
53.96
0.21
0.03464
6.597
0.0002459
41.00
0.0002459
41.86
0.0002459
44.17
0.25
0.04909
7.854
0.0003485
28.93
0.0003485
29.54
0.0003485
31.17
0.27
0.05726
8.482
0.0004065
24.80
0.0004065
25.33
0.0004065
26.72
0.29
0.06605
9.111
0.0004690
21.50
0.0004690
21.95
0.0004690
23.16
0.31
0.07548
9.739
0.0005359
18.81
0.0005359
19.21
0.0005359
20.27
0.35
0.09621
11.00
0.0006830
14.76
0.0006830
15.07
0.0006830
15.90
0.40
0.1257
12.57
0.0008922
11.30
0.0008922
11.54
0.0008922
12.18
0.45
0.1590
14.14
0.001129
8.928
0.001129
9.117
0.001129
9.620
0.50
0.1963
15.71
0.001394
7.232
0.001394
7.385
0.001394
7.792
0.60
0.2827
18.85
0.002007
5.022
0.002007
5.128
0.002007
5.411
0.70
0.3848
21.99
0.002732
3.690
0.002732
3.768
0.002732
3.976
0.80
0.5027
25.13
0.003569
2.825
0.003569
2.885
0.003569
3.044
0.90
0.6362
28.28
0.004517
2.232
0.004517
2.279
0.004517
2.405
1.00
0.7854
31.42
0.005576
1.808
0.005576
1.846
0.005576
1.948
1.20
1.131
37.70
0.008030
1.256
0.008030
1.282
0.008030
1.353
1.40
1.539
43.98
0.01093
0.9224
0.01093
0.9419
0.01093
0.9939
1.60
2.011
50.27
0.01428
0.7063
0.01428
0.7212
0.01428
0.7610
1.80
2.545
56.55
0.01807
0.5580
0.01807
0.5698
0.01807
0.6013
2.00
3.142
62.83
0.02231
0.4520
0.02231
0.4615
0.02231
0.4870
2.20
3.801
69.12
0.02699
0.3736
0.02699
0.3814
0.02699
0.4025
2.50
4.909
78.54
0.03485
0.2893
0.03485
0.2954
0.03485
0.3117
2.80
6.158
87.96
0.04372
0.2306
0.04372
0.2355
0.04372
0.2485
3.00
7.069
94.25
0.05019
0.2009
0.05019
0.2051
0.05019
0.2165
3.50
9.621
110.0
0.06831
0.1476
0.06831
0.1507
0.06831
0.1590
4.00
12.57
125.7
0.08922
0.1130
0.08922
0.1154
0.08922
0.1218
4.50
15.90
141.1
0.1129
0.08928
0.1129
0.09117
0.1129
0.09620
5.00
19.63
157.1
0.1394
0.07232
0.1394
0.07385
0.1394
0.07792
5.50
23.76
172.8
0.1687
0.05977
0.1687
0.06103
0.1687
0.06440
6.00
28.27
188.5
0.2007
0.05022
0.2007
0.05128
0.2007
0.05411
6.50
33.18
204.2
0.2356
0.04279
0.2356
0.04370
0.2356
0.04611
7.00
38.48
219.9
0.2732
0.03690
0.2732
0.03768
0.2732
0.03976
