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You are at: Products → Bronze Alloys → C31400 Leaded Commercial Bronze
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    C31400 Leaded Commercial Bronze
     ASTM B140

    Leaded Commercial Bronze C31400 combines the natural corrosion resistance of C22000 with the machinability typical of leaded brasses. Like C22000, it is an alpha brass nominally composed of 89% copper and 9% zinc, but it also contains approximately 2% lead to impart free-cutting characteristics. The relatively low zinc content of C31400 provides excellent corrosion resistance in potable water along with a pleasing golden color that matches C22000 hardware. Alloy C31400 is also suitable for outdoor use due to its resistance to stress corrosion cracking and to corrosion in general, but where the highest strength is not required.

    TYPICAL USES FOR C31400 LEADED COMMERCIAL BRONZE

    • BUILDERS HARDWARE: Door Knobs
    • ELECTRICAL: Connectors for Wire and Cable, Electrical Plug Type Connectors
    • FASTENERS: Screws, Nuts
    • INDUSTRIAL: Pickling Fixtures, Pickling Racks, Pickling Crates, Screw Machine Parts

     Click Here to Download C31400 SPEC SHEET


    <<< SEE SIZES& SPECS BELOW >>



      
    CHEMICAL COMPOSITION


    		 Cu Fe Pb Ni Zn
    Min/Max 87.5 - 90.5 0.1 1.3 - 2.5 0.7 Rem
    Nominals 89.0000 - 1.9000 - 9.1000
    TEMPER

    Product Type Temper Type
    Bar ASTM B140
    Rod ASTM B140
    Shapes ASTM B140
    Valves MILITARY MIL-V-18436
    MECHANICAL PROPERTIES

    Temper Sect. Size Cold Work Type Min Temp Tensile Strength YS
    0.05% UL     		YS
    0.02% Offset     		YS
    0.005% Offset     		Elong. RH
    B     		RH
    C     		RH
    F     		RH
    30T     		VH
    500     		BH
    500     		BH
    3000     		Shear
    Strgth     		Fatigue
    Strgth     		Izod
    Impact
    Strgth
    - in. % - F ksi ksi ksi ksi % B C F 30T 500 500 3000 ksi ksi ft-lb
    - mm. - - C MPa MPa MPa MPa - - - - - - - - MPa MPa J
    BAR
    H02 0.25 68 55 50 - - - - - - - - - - 31 -
    H02 6.35 0 TYP 20 379 345 - - 12 61 - - - - - - 214 - 0
    ROD
    OS050 1 68 37 12 - - - - - - - - - - 24 -
    OS050 25.4 0 TYP 20 255 83 - - 45 - - 55 - - - - 165 - 0
    H04 1 68 52 45 - - - - - - - - - - 30 -
    H04 25.4 20 TYP 20 359 310 - - 18 58 - - - - - - 207 - 0
    H02 0.25 68 60 55 - - - - - - - - - - 32 -
    H02 6.35 37 TYP 20 414 379 - - 10 65 - - - - - - 221 - 0
    H02 0.5 68 55 50 - - - - - - - - - - 31 -
    H02 12.7 25 TYP 20 379 345 - - 14 61 - - - - - - 214 - 0
    PHYSICAL PROPERTIES

    Product Property US Customary Metric
    Coefficient of Thermal Expansion 10.2 ·10-6 per oF (68-572 F) 18.4 ∙ 10 6ֿ per ˚C (20-300 C)
    Density 0.319 lb/in3 @ 68 F 8.83 gm/cm3 @ 20 C
    Electrical Conductivity 42 %IACS @ 68 F 0.246 MegaSiemens/cm @ 20 C
    Electrical Resistivity 24.7 ohms-cmil/ft @ 68 F 4.11 microhm-cm @ 20 C
    Melting Point Liquid US 1900 F 1038 C
    Melting Point Solid US 1850 F 1010 C
    Modulas of Elasticity in Tension 17000 ksi 117000 MPa
    Modulas of Rigidity 6400 ksi 44130 MPa
    Specific Gravity 8.83 8.83
    Specific Heat Capacity 0.09 Btu/lb/˚F @ 68 F 377.1 J/kg ∙ ˚K at 293 K
    Thermal Conductivity 104.0 Btu ∙ ft/(hr ∙ ft2 ∙˚F) @ 68 F 180.0 W/m ∙ ˚K at 20 C
    FABRICATION

    Joining Technique Suitability
    Brazing Good
    Butt Weld Fair
    Capacity for Being Cold Worked Good
    Capacity for Being Hot Formed Poor
    Coated Metal Arc Welding Not Recommended
    Gas Sheilded Arc Welding Not Recommended
    Machinability rating 80
    Oxyacetylene Welding Not Recommended
    Seam Weld Not Recommended
    Soldering Excellent
    Spot Weld Not Recommended
    SPECIFICATIONS

    End Product Specification
    Bar ASTM B140
    Rod ASTM B140
    Shapes ASTM B140
    Valves MILITARY MIL-V-18436
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