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%


Wire, Rod, Strip/Ribbon/Foil, Stranded Wire, Heating helix coil are available

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