Cable & Wire

Enamelled Karma NICR20AlSi Resistance Alloy Wire

Shanghai Tankii Alloy Material Co., Ltd.
  • Type:Insulated
  • Conductor Type:Solid
  • Application:Overhead, Heating
  • Conductor Material:Nickel alloy wire
  • Sheath Material:None
  • Insulation Material:Enameled

Base Info

  • Model NO.:Karma
  • Material Shape:Round Wire
  • Range of Application:Cold-Resistant
  • Certification:CE, CCC, RoHS
  • Brand:TANKII
  • Serves:Samll Order Accepted
  • Sample:Free
  • standard:GB,ASTM,JIS,BIS,DIN
  • colour:color
  • Transport Package:in Spool
  • Specification:0.02-1.5mm
  • Trademark:TANKII
  • Origin:China
  • HS Code:85441100
  • Production Capacity:2000 Tons,Year

Description

  name code

                         Main Composition (%)

 

Standard

 

CrAlFeNi Karma 6J22 

19~21

 

2.5~3.2

 

2.0~3.0

 bal. 

JB/T 5328

 

NameCode

 (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 
StrengthStandardKarma6J221.33±0.07≤±20≤2.5≤300>7≥780JB/T 5328

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.


Type of insulationInsulation-enamelled NameThermal LevelºC
(working time 2000h)
Code NameGB CodeANSI. TYPEPolyurethane enamelled wire130UEWQAMW75CPolyester enamelled wire155PEWQZMW5CPolyester-imide enamelled wire180EIWQZYMW30CPolyester-imide and polyamide-imide double coated enameled wire200EIWH
(DFWF)
QZY/XYMW35CPolyamide-imide enamelled wire220AIWQXYMW81CEnamelled Karma NICR20AlSi Resistance Alloy Wire

Enamelled Karma NICR20AlSi Resistance Alloy Wire