| 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.
