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Nickel-chromium, nickel-chromium alloy with high and stable resistance, corrosion resistance, surface oxidation resistance is good, a better under high temperature and seismic strength, good ductility, good workability and weldability, is widely used in industrial electric furnace, metallurgy, household appliances, machinery manufacturing, heating element and resistor varistor other material.

Other Name: Chromel A, Nikrothal 80, N8, Nichrome V, Tophet A, Resistohm 80,Cronix 80, Alloy A, MWS-650, Stablohm 650; Chromel C, Nikrothal 60, N6, Tophet C,Resistohm 60, Cronifer II, Nichrome Alloy C, MWS-675, Stablohm 675;

Main characteristics of Nichrome electric heating alloys

Alloy Nomenclature Performance

Cr20Ni80

Cr30Ni70

Cr15Ni60

Cr20Ni35

Cr20Ni30

Main Chemical composition

Ni

Rest

Rest

55.0-61.0

34.0-37.0

30.0-34.0

Cr

20.0-23.0

28.0-31.0

15.0-18.0

18.0-21.0

18.0-21.0

Fe

≤1.0

≤1.0

Rest

Rest

Rest

Max. continuous service temp. of element(ºC)

1200

1250

1150

1100

1100

Resistivity at 20ºC (μΩ·m)

1.09

1.18

1.12

1.0

1.04

Density(g/cm3)

8.40

8.10

8.20

7.90

7.90

Thermal conductivity (KJ/m·h·ºC)

60.3

45.2

45.2

43.8

43.8

Coefficient of lines expansion(α×10-6/ºC)

18.0

17.0

17.0

19.0

19.0

Melting point approx.( ºC)

1400

1380

1390

1390

1390

Elongation at rupture(%)

>20

>20

>20

>20

>20

Micrographic structure

austenite

austenite

austenite

austenite

austenite

Magnetic properties

nonmagnetic

nonmagnetic

Weak magnetic

Weak magnetic

Weak magnetic

Post by Michael Wang    Minerals & Metallurgy    @2011-12-26 14:42:18

  • Country:China (Mainland)
  • Contact Person:Michael Wang
  • Company:Wisdom Heating Alloy(Shanghai) Co., Ltd