CrAl 25-5

General Description

CrAl 25-5 is a high-temperature ferritic iron-chromium-aluminium alloy (FeCrAl alloy) which is recommended for element temperatures up to 1250°C. It is especially recommended where excellent oxidation and life properties in combination with good form stability properties are required. CrAl 25-5 is used in electrical heating elements in industrial furnaces and in the appliance industry.

CrAl 25-5 is a better grade of FeCrAl heating alloy to replace Kanthal series.

Chemical Composition

Grade C% P% S% Mn% Si% Cr% Ni% Al% Fe%
CrAl25-5 Max 0.05 Max 0.025 Max 0.025 Max 0.5 Max 0.5 23.0-26.0 Max 0.6 4.5-6.5 Bal.

Physical Properties

Density: 7.1 g/cm3

Max Working Temperature: 1250°C

Melting Point: 1500 °C

Specific Resistance (at 20°C) (µΩ-m): 1.45±0.07

Linear Expansion Coeff. (T=20 – 1000°C) x10-6 : 16.0

Mechanical Properties

Tensile: 637-784 MPa

Elongation: Min 12%

Forms

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

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