Karma 6J22 NiCr Alloy Resistance Wire 0.018-10mm for Heating Elements with 300°C Max Temperature
Price:
$10~$25/KG
MOQ:
100KG
Delivery Time:
30days
Brand:
TANKII
Product Description
Karma 6J22 NiCr Alloy Resistance Wire
High-performance NiCrAlFe alloy resistance heating wire designed for electrical heating elements and precision resistors. Karma alloy offers superior resistivity, low temperature coefficient, and excellent oxidation resistance for demanding industrial applications.
Material Composition & Properties
Karma alloy consists of copper, nickel, aluminum, and iron as primary components, delivering 2-3 times higher resistivity than standard materials with enhanced stability.
| Chemical Element | Content (%) |
|---|---|
| Carbon (C) | ≤0.04 |
| Silicon (Si) | ≤0.20 |
| Manganese (Mn) | 0.5-1.05 |
| Phosphorus (P) | ≤0.010 |
| Sulfur (S) | ≤0.010 |
| Nickel (Ni) | Balance |
| Aluminum (Al) | 2.7-3.2 |
| Iron (Fe) | 2.0-3.0 |
| Chromium (Cr) | 19.0-21.5 |
| Physical Property | Value |
|---|---|
| Density | 8.1 g/cm³ |
| Volume Resistivity (20°C) | 1.33 ±8% μΩ·m |
| Maximum Operating Temperature | 300°C |
| Temperature Coefficient (PPM) | ≤±30 ×10⁻⁶/°C |
| Thermal EMF vs Pt (0-100°C) | ≤2.5 μV/°C |
| Melting Point | 1400°C |
| Thermal Conductivity | 46 KJ/m·h·°C |
| Hardness (Hv) | 180 |
| Elongation | 10-20% |
Available Dimensions
- Wire: 0.018mm - 10mm diameter
- Ribbon: 0.05×0.2mm - 2.0×6.0mm
- Strip: 0.5×5.0mm - 5.0×250mm
- Bar: 10mm - 100mm
Technical Advantages
- 1.2 times greater volume resistivity than standard NiCr heating wire
- 1.3 times greater tensile strength
- Minimal secondary temperature coefficient (-0.03×10⁶/K²)
- Low thermal EMF against copper (≤+2 μV/K)
- Excellent long-term stability and oxidation resistance
- Wide operating temperature range (-60°C to 300°C)
- Non-magnetic austenitic structure
- Superior form stability for precision applications
Product Gallery
Applications
Ideal for electrical heating elements, precision resistors, strain gauges, and other applications requiring stable resistance characteristics across temperature variations.
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Shanghai Tankii Alloy Material Co.,Ltd
Location
1900 Mudanjiang Road, Baoshan District, 201999, Shanghai, China
Contact Person
Martin Lee