Nickel Chromium Base Alloys Wire/Strip/Rod/Bar

Nickel Chromium Base Alloys Wire/Strip/Rod/Bar

Shanghai Tankii Alloy Material Co.,Ltd. is specialized in production of Ni-Cr Alloy, Cu-Ni Alloy, Fechral, thermocouple wire, pure nickel and other precision alloy materials in the form of wire, strip, rod, bar and plate.

We’ve already got ISO9001 quality system certification and ISO14001 environmental protection system.

Nichrome’s metallurgical structure confers them a very good plasticity when cold.
There is a growth of the grain under heat during utilisation of the element without inducing embrittlement of it when cold.

They are used for the manufacture of electric resistances for appliances (insulated elements type tubular resistances or for example opened elements on micanit plate) or for application of industrial furnaces.

In addition of a relatively high specific resistance, Ni-Cr alloys join all the necessary properties for good performances in use of furnaces:

  • Resistance to oxidation (they are not sensitive to aggressions of humid air)
  • Low embrittlement at high temperature
  • Good plasticity – Easier to give them a shape compared with FeCrAl (lower mechanical characteristics allow indeed a good control of elasticity of the product during shaping (coiling, folding, drawing)
  • Good resistance to creeping (more important than ferritic alloys) which is important during conception of a resistance presenting big heights of waves.

Maximal temperature recommended in the furnace: 1922 / 2012 °F in order to obtain a reasonable life time of the elements.

 

Chemical Composition and Main Properties of Nichrome

Properties Grade

NiCr 80/20

NiCr 70/30

NiCr 60/15

NiCr 35/20

NiCr 30/20

Main Chemical Composition

Ni

Balance

Balance

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

Balance

Balance

Balance

Max Continuous Service Temperature(oC)

1200

1250

1150

1100

1100

Resisivity 20oC (Ωmm2/m)

1.09±

1.18±

1.12±

1.04±

1.04±

Density (g/cm3)

8.4

8.1

8.2

7.9

7.9

Thermal Conductivity(KJ/m·h·oC)

60.3

45.2

45.2

43.8

43.8

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

18

17

17

19

19

Melting Point( oC)

1400

1380

1390

1390

1390

Elongation(%)

>20

>20

>20

>20

>20

Micrographic Structure

austenite

austenite

austenite

austenite

austenite

Magnetic Property

nonmagnetic

nonmagnetic

nonmagnetic

Weak magnetic

Weak magnetic

 

Product Origin: China
Model Number: Ni80Cr20
Brand Name: TANKII
   
   

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Company Name: Shanghai Tankii Alloy Material Co., Ltd.
Contact Person: Martin Lee
Address: No.380,Shuangqing Road,Baoshan Distict, Shanghai, China
Zip: 200231
Telephone: +86 21 56110178
Fax: +86 21 56116916
E-mail: sales@tankii.com
Website: www.tankii.com

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