• Huona (Shanghai) New Material Co., Ltd.
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    The product quality is very good, beyond my expectations, the actual use of fully meet my needs, we will buy again.
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Contact Person : Joy
Phone Number : +86 18930254719
WhatsAPP : 8618930254719

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

Place of Origin China
Brand Name HUONA
Certification ISO9001
Model Number Karma/Evanohn
Minimum Order Quantity 1KG
Price Need to negotiate
Packaging Details Cartoon, Wooden
Delivery Time Around a week
Payment Terms T/T
Supply Ability 2000tons/year

Contact me for free samples and coupons.

WhatsAPP:0086 18588475571

Wechat: 0086 18588475571

Skype: sales10@aixton.com

If you have any concern, we provide 24-hour online help.

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Product Details
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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Precision welding nichrome wire

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Precision thick nichrome wire

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welding nichrome wire For Defrost Machine

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Product Description
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 0



Manufacture Nickel Karma/Evanohm Wire Precision Alloy Wire For Defrost Machine 1

Manufacture Nickel Karma/Evanohm Wire Precision Alloy Wire For Defrost Machine 2Manufacture Nickel Karma/Evanohm Wire Precision Alloy Wire For Defrost Machine 3Manufacture Nickel Karma/Evanohm Wire Precision Alloy Wire For Defrost Machine 4Manufacture Nickel Karma/Evanohm Wire Precision Alloy Wire For Defrost Machine 5Manufacture Nickel Karma/Evanohm Wire Precision Alloy Wire For Defrost Machine 6Manufacture Nickel Karma/Evanohm Wire Precision Alloy Wire For Defrost Machine 7Manufacture Nickel Karma/Evanohm Wire Precision Alloy Wire For Defrost Machine 8