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  • C260 Cartridge Brass Alloy Wire (CuZn30)

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    Alloy C260 is commonly used for electrical components, electronic parts, and mechanical fasteners. The alloy has good strength but poor stress relaxation characteristics and does not make a particularly good spring material. Although it has good conductivity, the solderability of the alloy is severely impaired by its high zinc content.

    Mechanical Properties

    Round Wire

    Temper Name Temper Code Tensile Strength (ksi) Mill Limits
    Min Max
    1/8 Hard H00 50 65 .0010 - .1285 inch
    1/4 Hard H01 62 77
    1/2 Hard H02 79 94
    3/4 Hard H03 92 107
    Hard H04 102 117
    Extra Hard H06 115 129
    Spring H08 120  

    Square Wire

    Temper Name Temper Code Tensile Strength (ksi) Mill Limits
    Min Max
    1/8 Hard H00 50 65 .0100 - .0808 inch
    1/4 Hard H01 62 77
    1/2 Hard H02 79 94
    3/4 Hard H03 92 107
    Hard H04 102 117
    Extra Hard H06 115 129
    Spring H08 120  

    Rolled Flat

    Temper Name Temper Code Tensile Strength (ksi) Mill Limits
    Min Max
    1/4 Hard H01 49 59

    Thickness:
    .0100 - .0500 inch

    Width:
    .0150 - .2500 inch

    1/2 Hard H02 57 67
    3/4 Hard H03 64 74
    Hard H04 71 81
    Extra Hard H06 83 92
    Spring H08 91 100

    Physical Properties

    Melting Point (Liquidis) 1750°F
    Melting Point (Solidus) 1680°F
    Density 0.308 lbs/cu in
    Electrical Resistivity (Annealed) 37 Ω⋅cmil/ft @ 68°F
    Electrical Conductivity (Annealed) 28% IACS @ 68°F
    Thermal Conductivity (Solutionized-Aged) 70 Btu ft/sq ft hr °F @ 68°F
    Coefficient of Thermal Expansion 0.0000111°F (68-572°F)
    Modulus of Elasticity (Tension) 16000 ksi
    Modulus of Rigidity 6000 ksi