• Main features of

    resistance heating wires

    .
    resistance wire nichrome wire
     Jiangsu Heyi Electric Heating Material Co., Ltd
    Resistance wire and ribbon, Nichrome wire manufacturer

    Iron chromium aluminum wire

    Main Characteristics of Fe-Cr-Al High Resistance Wires
    Alloy Nomenclature
    Performance
    1Cr13Al4 0Cr25Al5 0Cr21Al6 0Cr23Al5 1Cr20Al3 0Cr21Al6Nb 0Cr27Al7Mo2
    Main
    Chemical
    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 950 1250 1250 1250 1100 1350 1400
    Resistivity at 20oC (μΩ·m) 1.25 1.42 1.42 1.35 1.23 1.45 1.53
    Density (g/cm3) 7.40 7.10 7.16 7.25 7.35 7.10 7.10
    Thermal conductivity(KJ/m·h·oC) 52.7 46.1 63.2 60.2 46.9 46.1 45.2
    Coefficient of lines expansion(α×10-6/oC) 15.4 16.0 14.7 15.0 13.5 16.0 16.0
    Melting point (approx.) (oC) 1450 1500 1500 1500 1500 1510 1520
    Tensile strength (N/mm2) 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
    continuous service time(Hours/ oC) -- ≥80/1300 ≥80/1300 ≥80/1300 ≥80/1250 ≥50/1350 ≥50/1350
    Micrographic structure Ferrite Ferrite Ferrite Ferrite Ferrite Ferrite Ferrite
    Magnetic properties Magnetic Magnetic Magnetic Magnetic Magnetic Magnetic Magnetic
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