80/20 Ni-Cr Resistance Wire
An alloy wire used at operating temperatures up to 1200°C (2200°F). Its chemical composition gives good oxidation resistance especially under conditions of frequent switching or wide temperature fluctuations.
80/20 Ni-Cr Resistance Wire is also known as Nichrome / Nicrove V, Brightray C, Cronix 80, Nicrothal 80, Chromalloy, Chromel, and Gilphy 80.
| Chemical Composition | Designations | Typical Applications |
|---|---|---|
C–0.15,Si0.50-2.00,Mn–1.00,P–0.02,S–0.015,Cr19.00-21.00,Ni75.00,Al–0.30,Cu–0.50,Fe–1.00 | W.Nr. 2.4869 UNS N06003 AWS 080 | Heating elements in both domestic and industrial appliances and in control resistors |
| Density | 8.31g/cm³ | 0.300 lb/in³ |
| Electrical Resistivity at 20°C | 108 microhm • cm | 650 ohm. Circ. mil/ft |
| Maximum Operating Temperature For use as a Heating Element For use in Hot Cutting, Fabrication – Line Bending | 1200 °C 300 °C | 2200 °F 572 °F |
| Melting Point | 1400 °C | 2550 °F |
| Coefficient of Expansion | 12.5 µm/m °C (20 – 100°C) | 7.0 x 10-6 in/in °F (70 – 212°F) |
| Temperature-Resistance Factor (F) At: | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 20°C | 100°C | 200°C | 300°C | 400°C | 500°C | 600°C | 700°C | 800°C | 900°C | 1000°C | 1100°C | 1200°C |
| 68°F | 212°F | 392°F | 572°F | 752°F | 932°F | 1112°F | 1292°F | 1472°F | 1652°F | 1832°F | 2012°F | 2192°F |
| 1.00 | 1.006 | 1.015 | 1.028 | 1.045 | 1.065 | 1.068 | 1.057 | 1.051 | 1.052 | 1.062 | 1.071 | 1.080 |
