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