Our resistance wire(heating wire) has the characteristics of high rate of resistance, small resistance temperature coefficient and high use temperature. It has a good corrosion resistance at high temperature, low price and is particularly suitable for using in the atmosphere of sulfur and sulfide, so it is an ideal heating material used in industrial furnaces, household appliances and far-infrared devices.
Main characteristics of FeCrAl high resistance and heating alloys
Alloy Nomenclature / Performance 1Cr13Al4 0Cr25Al5 0Cr21Al6 0Cr23Al5 0Cr21Al4 0Cr21Al6Nb 0Cr27Al7Mo2
Main hemical composition Cr 12.0-15.0 23.0-26.0 19.0-22.0 20.5-23.5 18.0-21.0 21.0-23.0 26.5-27.8
Al 4.0-6.0 4.5-6.5 5.0-7.0 4.2-5.3 3.0-4.2 5.0-7.0 6.0-7.0
Re opportune opportune opportune opportune opportune opportune opportune
Fe Rest Rest Rest Rest Rest Rest Rest
Nb0.5 Mo1.8-2.2
Max. continuous service temp. of element 650 1250 1250 1250 1100 1350 1400
Resistivity at 20º C (μ Ω · m) 1.25 1.42 1.42 1.35 1.23 1.45 1.53
Density (g/cm 3 ) 7.4 7.1 7.16 7.25 7.35 7.1 7.1
Thermal conductivity(KJ/m· h· º C) 52.7 46.1 63.2 60.2 46.9 46.1 45.2
Coefficient of lines expansion(α × 10-6/º C) 15.4 16 14.7 15 13.5 16 16
Melting point (approx. ) (º C) 1450 1500 1500 1500 1500 1510 1520
Tensile strength (N/mm 2 ) 580-680 630-780 630-780 630-780 600-700 650-800 680-830
Elongation at rupture(%) > 16 > 12 > 12 > 12 > 12 > 12 > 10
Variation of area(%) 65-75 60-75 65-75 65-75 65-75 65-75 65-75
Bending frequency (F/R) > 5 > 5 > 5 > 5 > 5 > 5 > 5
Hardness(H. B. ) 200-260 200-260 200-260 200-260 200-260 200-260 200-260
Micrographic structure Ferrite Ferrite Ferrite Ferrite Ferrite Ferrite Ferrite
Magnetic properties Magnetic Magnetic Magnetic Magnetic Magnetic Magnetic Magnetic
