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High Performance Quartz Tube Heaters – Moleculoy Wire/Evanohm/800 Moleculoy – TANKII

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High Performance Quartz Tube Heaters – Moleculoy Wire/Evanohm/800 Moleculoy – TANKII Detail:

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)
Resistivity
(μΩ.m)
  (20ºC)
Temp. Coeff.Of Resistance
(αX10-6/ºC)
(0~100ºC)
ThermalEMF vs.

Copper
(μv/ºC)

Max.working
Temp.(ºC)
(%)
Elongation
(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.


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Our products are widely recognized and trusted by users and can meet continuously changing economic and social needs for High Performance Quartz Tube Heaters – Moleculoy Wire/Evanohm/800 Moleculoy – TANKII , The product will supply to all over the world, such as: Nepal, Nigeria, Zimbabwe, With top quality products, great after-sales service and warranty policy, we win trust from many overseas partner, many good feedbacks witnessed our factory's growth. With full confidence and strength, welcome customers to contact and visit us for future relationship.
The company keeps to the operation concept "scientific management, high quality and efficiency primacy, customer supreme", we have always maintained business cooperation. Work with you,we feel easy!
5 Stars By Anastasia from Serbia - 2018.12.28 15:18
Although we are a small company, we are also respected. Reliable quality, sincere service and good credit, we are honored to be able to work with you!
5 Stars By Juliet from Slovakia - 2017.12.31 14:53
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