Nickel Chromium Wire
Nickel-Chrome & Nickel-Chrome-Iron alloy wire
The Nickel-Chrome and Nickel-Chrome-Iron alloy wires are
Nickel Chromium Wire Nickel-Chrome & Nickel-Chrome-Iron alloy wire The Nickel-Chrome and Nickel-Chrome-Iron alloy wires are widely used as the high resistance alloy for electrical heating and wire-wound resistors in metallurgical industry,chemical industry and electrical industry, etc. This alloy wire has higher electrical resistance coefficient, good anti-oxidation and anti-corrosion performance, and it also has good mechanical workability and weldability, with a high strength at high temperature. Main characteristics of Ni-Cr and Ni-Cr-Fe electric heating alloys
Type Performance | Cr20Ni80 | Cr30Ni70 | Cr15Ni60 | Cr20Ni35 | Cr20Ni30 | Cr25Ni20 | MainChemical composition | Ni | Rest | Rest | 55.0-61.0 | 34.0-37.0 | 30.0-34.0 | 19.0-22.0 | Cr | 20.0-23.0 | 28.0-31.0 | 15.0-18.0 | 18.0-21.0 | 18.0-21.0 | 24.0-26.0 | Fe | ≤1.0 | ≤1.0 | Rest | Rest | Rest | Rest | Max. continuous service temp. of element (ºC) | 1200 | 1250 | 1150 | 1100 | 1100 | 1050 | Resistivity at 20oC (μΩ·m) | 1.09±0.05 | 1.18±0.05 | 1.12±0.05 | 1.0±0.05 | 1.04±0.05 | 0.95±0.05 | Density (g/cm3) | 8.40 | 8.10 | 8.20 | 7.90 | 7.90 | 7.15 | Thermal conductivity(KJ/m·h·ºC) | 60.3 | 45.2 | 45.2 | 43.8 | 43.8 | 43.8 | Coefficient of lines expansion (α×10-6/ºC) | 18.0 | 17.0 | 17.0 | 19.0 | 19.0 | 19.0 | Melting point (approx.)( ºC) | 1400 | 1380 | 1390 | 1390 | 1390 | 1400 | Elongation at rupture (%) | >20 | >20 | >20 | >20 | >20 | >20 | Micrographic structure | austenite | austenite | austenite | austenite | austenite | austenite | Magnetic properties | nonmagnetic | nonmagnetic | nonmagnetic | Weak magnetic | Weak magnetic | Weak magnetic |
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Nickel chromium wire(6J20)
