General Description
NiCr 7030, also called Nikrothal 70, is an excellent material for resistance wire and strip. The resistance alloy is used for electrical heating in industrial furnaces.
Chemical Composition
| Grade | C% | P% | S% | Mn% | Si% | Cr% | Ni% | Al% | Fe% |
|---|---|---|---|---|---|---|---|---|---|
| NiCr 7030 | Max 0.08 | Max 0.02 | Max 0.015 | Max 0.6 | 0.75-1.60 | 28.0-31.0 | Bal. | Max 0.50 | Max1.0 |
Physical Properties
Density: 8.1 g/cm3
Max Working Temperature: 1100°C
Melting Point: 1380 °C
Specific Resistance (at 20°C) (µΩ-m): 1.18±0.05
Linear Expansion Coeff. (T=20 – 1000°C) x10-6 : 17.0
Mechanical Properties
Tensile: Min 650 MPa (Dia/Thick>= 3mm)
Elongation: Min 20%
Forms
Wire, Rod, Strip/Ribbon/Foil, Stranded Wire, Heating helix coil are available