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Eleatric Heating Alloy Wires Heating Resistance Wires

Eleatric Heating Alloy Wires Heating Resistance Wires

Superb Heater Technology has been focused on the production of eleatric heating alloy since 1985, which is well-known as one of the leading manufacturers and suppliers of eleatric heating alloy. In the past years, we owned strong reputation for the high quality, reliable performance and strong...

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Superb Heater Technology has been focused on the production of eleatric heating alloy since 1985, which is well-known as one of the leading manufacturers and suppliers of eleatric heating alloy. In the past years, we owned strong reputation for the high quality, reliable performance and strong durability of our products. Should you are interested, please feel free to contact our factory.

Eleatric Heating alloy

Iron-chromium-aluminium (FeCrAl) alloys

Iron-chromium-aluminium (FeCrAl) alloyshave approximately the same basis composition: 12 to 28 % of chromium, 4.0 to 7 % of aluminum, balance being iron.Some of alloys contain rare molybdenum, niobium,silicium and so on. The alloy has the characteristics of high resistivity,low temperature coefficient and high temperature resistance. Also it has a good corrosion resistance at high temperature, and the price is much cheaper than Nickel chrome wire.So they are an ideal heating material used in industrial furnaces, household appliances and far-infrared devices.

Chemical Composition and Main Property of Fe-Cr-Al Resistance Alloy

Properties \Grade

1Cr13Al4

0Cr25Al5

0Cr21Al6

0Cr23Al5

0Cr21Al4

0Cr21Al6Nb

0Cr27Al7Mo2

 Main Chemical Composition
(%)

Cr

12.0-15.0

23.0-26.0

19.0-22.0

22.5-24.5

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

4.2-5.0

3.0-4.2

5.0-7.0

6.0-7.0

Re

-

-

-

-

-

-

-

Fe

Rest

Rest

Rest

Rest

Rest

Rest

Rest







Nb0.5

Mo1.8-2.2

       Max Work Temp(℃)

950

1250

1250

1250

1100

1350

1400

  Resisivity 20℃(Ωmm2/m)

1.25±0.08

1.42±0.06

1.42±0.07

1.35±0.07

1.23±0.07

1.45±0.07

1.53±0.07

Density(g/cm3)

7.4

7.1

7.16

7.25

7.35

7.1

7.1

 Coefficient of Thermal Expansion(α×10-6/℃)

15.4

16

14.7

15

13.5

16

16

   Melting Point(℃)

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

Section Variation Shrink Rate(%)

65-75

60-75

65-75

65-75

65-75

65-75

65-75

RepeatedlyBendFrequency(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

Micrographic Structure

 Ferrite

Ferrite

Ferrite

Ferrite

 Ferrite

Ferrite

 Ferrite

Magnetic Property

Magnetic

Magnetic

Magnetic

Magnetic

Magnetic

Magnetic

 Magnetic

A series of Ni-Cr,Ni-Cr-Fe alloys with their diameters and characteristics (Conversion Table)

Dia
mm

Cross sectional area
Mm2

Weight per Meter(kg/m)

Resistance per meter at 20℃(Ω/m)

OCr13Al4

OCr25Al5
OCr21Al6
OCr21Al6Nb
OCr27Al7MO2

Cr15Ni60

Cr20Ni80

Cr20Ni30

OCr13Al4

OCr25Al5
OCr21Al6

OCr27Al7
MO2

OCr21Al6
Nb

Cr15Ni60

Cr20Ni80

Cr20Ni30

0.10.00790.000060.000060.000060.000070.00006160.4178.3191183.5131.6140.1141.3
0.20.03140.000230.000220.000260.000260.0002540.1344.5944.7746.1733.1235.0135.33
0.30.07070.000520.00050.000580.000590.0005617.8219.821.2220.514.7115.5615.7
0.40.012570.000930.000890.001030.001060.0009910.0211.1411.9311.538.278.758.83
0.50.19640.00150.00140.001610.001650.00166.4167.1287.6387.3825.2955.6045.655
0.60.28270.00210.0020.002320.002370.00224.4574.9525.3065.1293.6783.8913.926
0.80.50270.00370.00360.004120.004220.00392.5072.7852.9842.8842.0682.1882.208
10.78540.00580.00560.00640.00660.00621.6041.8721.911.8461.3241.4011.413
1.21.1310.00840.0080.00920.00950.00891.1141.2381.3261.2820.9190.9720.9814
1.41.5390.0110.0110.01260.01290.01220.81870.90970.97470.94210.67570.71470.7212
1.62.0110.0150.0140.01640.01690.01590.62660.69620.74590.7210.51710.5470.522
1.82.5450.0190.0180.02090.02140.02010.49510.55010.58940.56970.40860.43220.4361
23.1420.0230.220.02570.02640.02480.4010.44560.47750.46140.33090.35010.3533
2.23.8010.0280.0270.03120.03190.030.33150.36830.39460.38140.27360.28940.292
2.44.5240.0330.0320.0370.0380.0360.27850.30950.33160.32050.22980.24310.2454
2.65.3090.0390.0380.0440.0450.0420.23730.26370.28250.27310.19580.20270.2091
2.86.1580.0460.0440.050.0520.0490.20460.22730.24360.23540.16880.17860.1803
37.0690.0520.050.0580.0590.0560.17820.1980.21220.20510.14710.15560.157
3.28.0430.060.0570.0660.0680.0640.15760.17410.18560.18020.12930.1380.1386
3.59.6210.0710.0680.0790.0810.0760.1310.14550.15590.15070.1080.11430.1154
412.570.0930.0890.1030.1050.0990.10020.11140.11930.11530.08270.08750.0883
4.515.90.1180.1130.130.1340.1260.07920.08810.09430.09110.06540.06910.0698
519.640.1450.1390.1610.1650.1550.06420.07130.07640.07380.05290.0560.0565
5.523.760.1750.1680.1950.1990.1880.0530.05890.06310.0610.04370.04630.0467
628.270.2090.2010.2320.2370.2230.04460.04950.05310.05120.03670.03890.0396
6.533.170.2450.2350.2720.2790.2620.03760.04280.04610.04370.03130.0340.0343
738.480.2840.2730.3150.3230.3030.03270.03640.0390.03760.0270.02930.0296
850.240.3710.360.360.4220.3970.02480.02820.03040.02880.02070.02240.0226

Temperature Factor of the Resistivity

Grade

20

100

200

300

400

500

600

700

800

900

1000

1100

1200

1Cr13A14

1

1.005

1.014

1.028

1.044

1.064

1.09

1.12

1.132

1.164

1.172

1.18

1.186

0Cr25A15

1

1.002

1.005

1.008

1.013

1.021

1.03

1.038

1.04

1.042

1.044

1.049

1.047

0Cr21A16

1

1

1.002

1.006

1.011

1.02        

1.037

1.043

1.046

1.049

1.052

1.055

1.058

0Cr21A16Nb

1

0.997

0.996

0.994

0.991

0.99

0.99

0.99

0.99

0.99

0.99

0.99

0.99

0Cr27A17Mo2

1

0.992

0.986

0.981

0.978

0.976

0.974

0.972

0.97

0.969

0.968

0.968

0.967

Cr20Ni80

1

1.006

1.012

1.018

1.025

1.026

1.018

1.01

1.008

1.01

1.014

1.021

1.025

Cr15Ni60

1

1.011

1.024

1.038

1.052

1.064

1.069

1.073

1.078

1.088

1.095

1.109


Cr20Ni30

1

1.023

1.052

1.079

1.103

1.125

1.141

1.158

1.713

1.187

1.201

1.214

1.226


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