?????? 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.continuousservicetemp.?BR>of element

1200

1250

1150

1100

1100

Resistivity at 20?/SPAN>C?BR>(???SPANlang=EN-US>m)

1.09

1.18

1.12

1.0

1.04

Density?BR>(g/cm³)

8.40

8.10

8.20

7.90

7.90

Thermal conductivity
(KJ/m?/SPAN>h?C)

60.3

45.2

45.2

43.8

43.8

Coefficient of lines expansion
(??SPANlang=EN-US>10^-6/?)

18.0

17.0

17.0

19.0

19.0

Meltingpoint?BR>(approx.)( ?)

1400

1380

1390

1390

1390

Elongationat?BR>rupture (%)

>20

>20

>20

>20

>20

Micrographic?BR>structure

austenite

austenite

austenite

austenite

austenite

Magnetic?BR>properties

nonmagnetic

nonmagnetic

nonmagnetic

Weak magnetic

Weak magnetic