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(1).Characteristics
The iron-chromium high electric resistance alloy has the characteristics of high rate of resistance, small resistance temperature coefficient and high use temperature. It has a good corrosion resistance at high temperature, low price and is particularly suitable for using in the atmosphere of sulfur and sulfide, so it is an ideal heating material used in industrial furnaces, household appliances and far-infrared devices.
(2).Specifications:

Cold-drawn alloy wire

Diameter

φ1.0-φ10.0mm

Hot-rolled alloy tray

Diameter

φ8.0-φ12.0mm

Cold-rolled alloy sheet

Thickness

0.5-3.5mm

Cold-rolled alloy sheet

Width

5.0-45.0mm

Hot-rolled alloy sheet

Thickness

3.0-6.0mm

Hot-rolled alloy sheet

Width

12.0-45.0mm

Bright filaments around the axis

Diameter

φ0.1-φ1.0mm

Bright filaments around the axis

Thickness

0.08-1.50mm

Bright flat wires around

Width

0.5-5.0mm

Delivery status:
The availability status
The sheet and tray materials are supplied with white or colored soft state.
The sheet materials are supplied with colored after annealing except special requirements.
The filaments and flat wires are supplied with light soft state after annealing through protection gas.
Product packaging
The sheet and wire materials are packaged with bagging and are supplied in volumes.
The filaments and flat wires are supplied with plastic-sealing around the axis.
The special requirements of users and the export products can be resolved through

Grade

1Cr13AL4

1Cr21AL4

0Cr21AL6

0Cr23AL5

0Cr25AL5

0Cr21AL6Nb

0Cr27AL7Mo2

Properties

Main chemical composition%

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

The remaining amount

The remaining amount

The remaining amount

The remaining amount

The remaining amount

The remaining amount

The remaining amount

Re

Appropriate amount

Appropriate amount

Appropriate amount

Appropriate amount

Appropriate amount

Appropriate amount

Appropriate amount

The added amount Nb:0.5

The added amount Mo:1.8—2.2.

The maximum use temperature℃

950

1100

1250

1250

1250

1350

1400

Melting point℃

1450

1500

1500

1500

1500

1510

1520

Density g/cm3

7.40

7.35

7.16

7.25

7.10

7.10

7.10

Rate of resistance 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

Anti-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

The number of repeatedly bending

≥5

≥5

≥5

≥5

≥5

≥5

≥5

Fast Life h/℃

——

≥80/1250

≥80/1300

≥80/1300

≥80/1300

≥80/1350

≥80/1350

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 property

Magnetic property

Magnetic property

Magnetic property

Magnetic property

Magnetic property

Magnetic property

Magnetic property

4.The parameters of iron-chromium aluminum wire


Diameter
(mm)

Cross-sectional area
(mm2)

Surface area per meter
cm2/m

0Cr25AL5

0Cr23AL5

0Cr21ALl6Nb

0C27AL7Mo2

g/m

Ω/m,20℃

g/m

Ω/m,20℃

g/m

Ω/m,20℃

g/m

0.10

0.007854

3.142

0.05576

180.8

0.0573

172

0.0561

184.6

0.0561

0.12

0.01131

3.770

0.08030

125.6

0.0819

119

0.0802

128.2

0.0802

0.15

0.01767

4.712

0.1255

80.36

0.128

76.4

0.125

82.05

0.125

0.17

0.02270

5.341

0.1612

62.56

0.165

59.5

0.161

63.88

0.161

0.19

0.02835

5.969

0.2013

50.08

0.206

47.6

0.201

51.14

0.201

0.21

0.03464

6.597

0.2459

41.00

0.251

39.0

0.246

41.86

0.246

0.25

0.04909

7.854

0.3485

28.93

0.356

27.5

0.349

29.54

0.349

0.27

0.05726

8.482

0.4065

24.80

0.418

24.3

0.403

25.33

0.403

0.29

0.06605

9.111

0.4690

21.50

0.481

20.1

0.469

21.95

0.469

0.31

0.07548

9.739

0.5359

18.81

0.583

17.5

0.573

19.21

0.573

0.35

0.09621

11.00

0.6830

14.76

0.689

14.0

0.683

15.07

0.683

0.40

0.1257

12.57

0.8922

11.30

0.911

10.7

0.892

11.54

0.892

0.45

0.1590

14.14

1.129

8.928

1.153

8.49

1.129

9.117

1.129

0.50

0.1963

15.71

1.394

7.232

1.42

6.88

1.39

7.385

1.39

0.60

0.2827

18.85

2.007

5.022

2.05

4.77

2.01

5.128

2.01

0.70

0.3848

21.99

2.732

3.690

2.79

3.51

2.73

3.768

2.73

0.80

0.5027

25.13

3.569

2.825

3.64

2.69

3.57

2.885

3.57

0.90

0.6362

28.28

4.517

2.232

4.61

2.12

4.52

2.279

4.52

1.00

0.7854

31.42

5.576

1.808

5.70

1.72

5.58

1.846

5.58

1.20

1.131

37.70

8.030

1.256

8.2

1.19

8.03

1.282

8.03

1.40

1.539

43.98

10.93

0.9224

11.16

0.877

10.9

0.9419

10.9

1.60

2.011

50.27

14.28

0.7063

14.6

0.671

14.3

0.7212

14.3

1.80

2.545

56.55

18.07

0.5580

18.4

0.531

18.1

0.5698

18.1

2.00

3.142

62.83

22.31

0.4520

22.8

0.43

22.3

0.4615

22.3

2.20

3.801

69.12

26.99

0.3736

27.6

0.355

27.0

0.3814

27.0

2.50

4.909

78.54

34.85

0.2893

35.6

0.275

34.9

0.2954

34.9

2.80

6.158

87.96

43.72

0.2306

44.6

0.219

43.7

0.2355

43.7

3.00

7.069

94.25

50.19

0.2009

51.2

0.191

50.2

0.2051

50.2

3.50

,

9.621

,

110.0

68.31

0.1476

69.8

0.140

68.3

0.1507

68.3

4.00

12.57

125.7

89.22

0.1130

91.1

0.107

89.3

0.1154

89.3

4.50

15.90

141.1

112.9

0.08928

115.3

0.0849

112.9

0.09117

112.9

5.00

19.63

157.1

139.4

0.07232

142

0.0688

139

0.07385

139

5.50

23.76

172.8

168.7

0.05977

172

0.0568

169

0.06103

169

6.00

28.27

188.5

200.7

0.05022

205

0.0477

201

0.05128

201

6.50

33.18

204.2

235.6

0.04279

241

0.0407

236

0.04370

236

7.00

38.48

219.9

273.2

0.03690

279

0.0351

273

0.03768

273

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