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Cr20Ni80 wire/strip/coil/rod

Wire subdivides by purpose:

· for heating elements; 

· for tubular heaters; 

· for resistors

Fields of application

Used in the high temperatures electric furnaces,annealing and drying furnaces, different electric heating appliances.Used for producing tube electro heatings and household appliances. Having high creep resistance, ductility, stability of the form and increased term of exploitation.

Technical information

Cold drawn wire is produced from the alloy gradeCr20Ni80 in soft heat treated position diameter 0.1&7.5 mm according to the standard GOST 12766.1&90.Chemical composition of Cr20Ni80 alloy should be according to GOST 10994 74.Physical and mechanical properties of Cr20Ni80 alloy are indicated in the table.

Advantages

· High temperature of exploitation (1200°c) and corrosion resistance in the air, vacuum, oxide, sulfur,nitric mediums, argon, ammonia, humid air. 

· News: working temperature of “Ni Cr 80 20 +” is1500°c, guarantee 10000 hours. Spiral coiling production. We produce spiral coiling“in cool”, without heating, from diameter0,1–7,5 mm, higher than 7,5 mm spiral coiling is produced “in hot”. 

· Have vibration resistance and more stable in chemical&dangerous medium.

Grade

Standard

Chemical composition.%

C

Si

Mn

Cr

Ni

S

P

Cu

Remark

Cr20Ni80

GBT/1234-95

≤0.100

0.8-1.5

≤0.70

20-23

Bal

≤0.020

≤0.030

Ti≤0.30

Al≤0.20

Fe≤1.00

Physical and mechanical properties of Cr20Ni80 alloy are indicated in the table

Physical and mechanical properties:

Density,gram/cm3

8.4

Melting point. 0C

1400

Structure

austenitic

Magnetization

Non-magnetic

Hardness, HB

140-150

Temperature coefficient of linear growth, k-1 in the range 20-10000C

18*10-6

Thermal diffusivity, 10-5m2/s

At 250C

>4000C

>8000C

0.31

0.44

0.56

Specific heat, J/kg*K\

At 250C

>8000C

0.44

Elongation, % not less

20

Short term resistance of tensile strength, N/mm2(kg F/mm2), not more

880(90)

Specific electric resistance, µΩ/m at 200C

1.05-1.14

Best regards /Ruth

Nickel alloy Nickel manganese alloys Nickel copper alloys

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