Material/performane

Cr20Ni80

Cr30Ni70

Cr15Ni60

Cr20Ni35

Cr20Ni30

Composition %

Ni

Rest

Rest

55.0～61.0

34.0～37.0

34.0～34.0

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

Maximum temperature℃

1200

1250

1150

1100

1100

Meltiing point℃

1400

1380

1390

1390

1390

Density g/cm3

8.40

8.10

8.20

7.90

7.90

Resistivity μΩ·m，20℃

1.09±0.05

1.18±0.05

1.12±0.05

1.00±0.05

1.04±0.05

Elongation at rupture

≥20

≥20

≥20

≥20

≥20

Specific heat J/g.℃

0.440

0.461

0.494

0.500

0.500

Thermal conductivity KJ/m.h℃

60.3

45.2

45.2

43.8

43.8

Coefficient of lines expansion a×10-6/℃ （20～1000℃）

18.0

17.0

17.0

19.0

19.0

Micrographic structure

Austenite

Austenite

Austenite

Austenite

Austenite

Magnetic properties

Nonmagnetic

Nonmagnetic

Nonmagnetic

Weak magnetic

Weak magnetic