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Manufacture Nickel Karma/Evanohm Wire Precision Alloy Wire For Defrost Machine

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Manufacture Nickel Karma/Evanohm Wire Precision Alloy Wire For Defrost Machine

Brand Name : HUONA

Model Number : Karma/Evanohn

Certification : ISO9001

Place of Origin : China

MOQ : 1KG

Price : Need to negotiate

Payment Terms : T/T

Supply Ability : 2000tons/year

Delivery Time : Around a week

Packaging Details : Cartoon, Wooden

Product name : Karma/Evanohm Wire

Composition : Nicr

Feature : excellent electrical stability and low temperature coefficient of resistance

Application : For Defrost Machine

Sample : Support

Customization : Support

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Attribute Details Attribute Details
Model NO. Ni80Cr20 Purity 80% Ni
Alloy Alloy Type Nickel Wire
Density 8.1 g/cm³ The Highest
Use Temperature
1300°C*
Resistivity 1.33 μΩ·m* Characteristics

High Resistivity,

Good Oxidation Resistance

Surface Bright Sample Support
Shape Wire OEM Yes
Diameter 0.018-8.0 mm Transport Package Wooden Cases or Cartons
Specification 0.01-8.0 mm Trademark Huona
Origin China HS Code 7506200000
Production Capacity 2000 tons/Year


Manufacture Nickel Karma/Evanohm Precision Alloy Wire for Defrost machine

1. Evanohm alloy

Evanohm 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. Evanohm 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.Evanohm Property

name code

Main Composition (%)


Standard


Cr Al Fe Ni
Evanohm 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
Evanohm 6J22 1.33±0.07 ≤±20 ≤2.5 ≤300 >7 ≥780 JB/T 5328

4. Distinctive features of Evanohm 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.

Manufacture Nickel Karma/Evanohm Wire Precision Alloy Wire For Defrost Machine



Manufacture Nickel Karma/Evanohm Wire Precision Alloy Wire For Defrost Machine

Manufacture Nickel Karma/Evanohm Wire Precision Alloy Wire For Defrost MachineManufacture Nickel Karma/Evanohm Wire Precision Alloy Wire For Defrost MachineManufacture Nickel Karma/Evanohm Wire Precision Alloy Wire For Defrost MachineManufacture Nickel Karma/Evanohm Wire Precision Alloy Wire For Defrost MachineManufacture Nickel Karma/Evanohm Wire Precision Alloy Wire For Defrost MachineManufacture Nickel Karma/Evanohm Wire Precision Alloy Wire For Defrost MachineManufacture Nickel Karma/Evanohm Wire Precision Alloy Wire For Defrost Machine


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