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Iron-chromium aluminum alloy

(1). Performance characteristics
High chromium iron chromium electrothermal alloy with high resistivity, low temperature coefficient of resistance, the use of high temperature characteristics. Good corrosion resistance at high temperatures, especially suitable for use in atmospheres containing sulfur and sulphides, and at low cost, are ideal heating materials for industrial furnaces, appliances, and far-infrared devices.
(2). Product Specifications:

Cold-drawn alloy wire

Diameter

φ1.0-φ10.0mm

Hot rolled alloy disk

Diameter

φ8.0-φ12.0mm

Cold-rolled alloy strip

Thickness

0.5-3.5mm

Cold-rolled alloy strip

Width

5.0-45.0mm

Hot rolled alloy strip

Thickness

3.0-6.0mm

Hot rolled alloy strip

Width

12.0-45.0mm

Bright filament around the shaft

Diameter

φ0.1-φ1.0mm

Shaft round bright flat wire

Thickness

0.08-1.50mm

Shaft round bright flat wire

Width

0.5-5.0mm

(3) Delivery Status:
1, the supply status
Wires and plates are supplied in white or oxidized colors.
Strip except for special requirements, the general oxidation of the color after the supply.
Filament and flat wire after the protective gas annealing, the supply of bright soft state.
2, product packaging
Wire and tape wrapped in cloth, roll supply.
Filament and flat yarn, plastic supply around the shaft.
3, export products and users have special requirements, negotiated settlement.


Grade

1Cr13AL4

1Cr21AL4

0Cr21AL6

0Cr23AL5

0Cr25AL5

0Cr21AL6Nb

0Cr27AL7Mo2

Performance








The 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

Margin

Margin

Margin

Margin

Margin

Margin

Margin

Re

Appropriate amount

Appropriate amount

Appropriate amount

Appropriate amount

Appropriate amount

Appropriate amount

Appropriate amount







Add amountNb:0.5

Add amountMo:1.8—2.2.

Components maximum operating temperature℃

950

1100

1250

1250

1250

1350

1400

Melting point℃

1450

1500

1500

1500

1500

1510

1520

Densityg/cm3

7.40

7.35

7.16

7.25

7.10

7.10

7.10

ResistivityμΩ·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

Repeated bending times

≥5

≥5

≥5

≥5

≥5

≥5

≥5

Fast lifeh/℃

——

≥80/1250

≥80/1300

≥80/1300

≥80/1300

≥80/1350

≥80/1350

Specific heatJ/g.℃

0.490

0.490

0.520

0.460

0.494

0.494

0.494

Thermal ConductivityKJ/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

HardnessHB

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

4. Iron chromium aluminum wire parameters


Wire diameter
(mm)

Cross-sectional area
(mm2)

Per meter
Surface area
cm2/m

0Cr25AL5

0Cr23AL5

0Cr21ALl6Nb

0C27AL7Mo2

Weight per meter
g/m

Resistance per meter
Ω/m,20℃

Weight per meterg/m

Resistance per meter
Ω/m,20℃

Weight per meterg/m

Resistance per meter
Ω/m,20℃

Weight per meterg/m


Resistance per meterΩ/m,20℃

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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