Shanghai Tankii Alloy Material Co.,Ltd
| Payment Terms | L/C, T/T, Western Union |
| Supply Ability | 100 Tons per month |
| Delivery Time | 7-12 work days |
| Packaging Details | Wooden case |
| Material | Ni Cr Al Fe Mn Alloy |
| Surface | Bright , Oxidation |
| Shape | Wire, ribbon, spring, etc |
| Diameter | 0.018-10.0mm |
| Standard | GB, ASTM etc |
| Packing | Spool carton wooden case |
| Resistivity | 1.33 |
| Brand Name | TANKII |
| Model Number | karma |
| Certification | SGS |
| Place of Origin | China |
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Product Specification
| Payment Terms | L/C, T/T, Western Union | Supply Ability | 100 Tons per month |
| Delivery Time | 7-12 work days | Packaging Details | Wooden case |
| Material | Ni Cr Al Fe Mn Alloy | Surface | Bright , Oxidation |
| Shape | Wire, ribbon, spring, etc | Diameter | 0.018-10.0mm |
| Standard | GB, ASTM etc | Packing | Spool carton wooden case |
| Resistivity | 1.33 | Brand Name | TANKII |
| Model Number | karma | Certification | SGS |
| Place of Origin | China | ||
| High Light | nichrome resistance wire ，nickel alloys | ||
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 (-60~300℃). 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 | (20℃) vity | (20℃) Of Resistance | (0~100℃) EMF vs. Copper | Max.workin g | (%) on | (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.
Company Details
Business Type:
Manufacturer,Exporter
Year Established:
1981
Total Annual:
8000000-100000000
Employee Number:
90~100
Ecer Certification：
Verified Supplier
Shanghai Tankii Alloy Material Co., Ltd.specialized in production of Resistance Heating Alloy, Nickel Chromium Alloy, Iron Chromium Aluminum Alloy, Nickel Aluminum Alloy, Manganin, Copper Nickel Alloy, thermocouple wire, pure nickel and other precision alloy materials in the form of round wire, ribb... Shanghai Tankii Alloy Material Co., Ltd.specialized in production of Resistance Heating Alloy, Nickel Chromium Alloy, Iron Chromium Aluminum Alloy, Nickel Aluminum Alloy, Manganin, Copper Nickel Alloy, thermocouple wire, pure nickel and other precision alloy materials in the form of round wire, ribb...
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