Alloy 800 (Evanohm) Resistance Wire

Product Details
Customization: Available
Application: Electronics, Industrial
Standard: JIS, GB, DIN, ASTM
Manufacturer/Factory, Trading Company
Diamond Member Since 2018

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  • Alloy 800 (Evanohm) Resistance Wire
  • Alloy 800 (Evanohm) Resistance Wire
  • Alloy 800 (Evanohm) Resistance Wire
  • Alloy 800 (Evanohm) Resistance Wire
  • Alloy 800 (Evanohm) Resistance Wire
  • Alloy 800 (Evanohm) Resistance Wire
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Basic Info.

Model NO.
Alloy 800
Type
Nickel Wire
Powder
Not Powder
Surface
Bright
Treatment
Hydrogen Annealing
Tensile Strength, Ultimate, Annealed
827 MPa
Size
0.018mm-10.0mm
Density ( @ 20.0° C/ 68.0° F)
8.10 G/Cm
Conductor Material
Ni-Cr-Al-Fe
Resistivity
1.33±0.07
Melting Point
1350° C
Resistance
800 Ohm-CIR-Mil/FT or 0.000134 Ohm-Cm
Composition
Nickel: 75%, Chromium 20%, Aluminium: 2.5%, Copper
Transport Package
Carton Box
Specification
Base on customers′ request
Trademark
Allotech
Origin
China
HS Code
7505220000
Production Capacity
50tons/Month

Product Description

1.   Karma alloy
Karma alloy is made up of copper, nickel, Aluminum and Iron as the main components. The resistivity is 2~3 times higher than MENTONG. It has lower temperature coefficient of resistance(TCR), lower thermal EMF versus copper, good permanence of resistance for a long period of time and strong anti oxidation. Its working temperature 
range is wider than MENTONG (-60~300ºC). It is suitable for making fine precision resistance elements and strain.

 2.  Karma size
Wire: 0.018mm-10mm
Ribbon: 0.05*0.2mm-2.0*6.0mm
Strip: 0.5*5.0mm-5.0*250mm
Bar: 10-100mm

3.Karma  Property

  name  code

                         Main Composition (%)

 

Standard

 

Cr Al Fe Ni
 Karma  6J22
 

19~21

 

2.5~3.2

 

2.0~3.0

 bal.
 

JB/T 5328

 
Name Code

 (20ºC) 
Resisti

  vity
(μΩ.m)

  (20ºC) 
Temp. Coeff. 

Of Resistance
 (αX10-6/ºC)

(0~100ºC) 
Thermal 

 EMF vs. 

 Copper
 (μv/ºC)

Max.workin

       g
Temp.(ºC)

(%)
Elongati

    on

(N/mm2)
 Tensile 
Strength
Standard
Karma 6J22 1.33±0.07 ≤±20 ≤2.5 ≤300 >7 ≥780 JB/T 5328

4. Distinctive features of Karma resistance wire

1) Starting with Nickel Chromium electric heat wire Class 1, we replaced some of the Ni with
Al and other elements, and thus achieved a precision resistance material with improved
resistance temperature coefficient and heat electromotive force against copper.
With the addition of Al, we have succeeded in making volume resistivity 1.2 times greater
than Nickel Chromium electric heat wire Class 1 and the tensile strength 1.3 times greater.

2) The secondary temperature coefficient β of Karmalloy wire KMW is very small, - 0.03 × 10-6/ K2,and the resistance temperature curve turns out to be almost a straight line within a wide
temperature range.

Therefore, the temperature coefficient is set to be the average temperature coefficient between
23 ~ 53 °C, but 1 × 10-6/K, the average temperature coefficient between 0 ~ 100 °C, also may
be adopted for the temperature coefficient.

3) Electromotive force against copper between 1 ~ 100 °C is also small, below + 2 μV/K, and
exhibits excellent stability over a period of many years.

4) If this is to be used as a precision resistance material, low temperature heat treatment is
required to eliminate processing distortions just as in the case of Manganin wire CMW.

Alloy 800 (Evanohm) Resistance WireAlloy 800 (Evanohm) Resistance Wire

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