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Specifications
Electrical Contacts CuZn9Pb2 - UNS.C31400 Leaded Commercial Bronze1.golden supplier ,munufaturer
2.a higher electrical
C31400 Leaded Commercial Bronze
CuZn9Pb2 – UNS.C31400 Lead Commercial Bronze Alloys, which is commonly named "Commercial Bronze", and it is a free machining brass with a higher electrical and thermal conductivity than that of standard free machining brass. 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 abt. 2% lead in order 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 Application for UNS.C31400 Leaded Commercial Bronze Alloys
Electrical : Electrical Contacts, Electrical Plug Type Connector, Connectors for Wires and Cables
Fastener : Nuts, Screws, Screw Machine Parts
Industrial : Pickling Crates, Plumbing Components, Pickling Racks, Pickling Fixtures, Architectural Hardware
Available Sizes
Custom Diameter & Sizes, Random Mill lengths
Available Products (forms)
Round bars, Flat bars, Square bars, Rectangular bars, Hexagon bars
Custom shapes are available upon request.
Chemical Composition
Cu: 87.50-90.50%
Pb: 1.30-2.50%
Fe: 0.10% Max.
Ni: 0.70% Max.
Zn: Balance
Note: Copper plus additions equal 99.50% minimum.
Typical Physical Properties
Specific Gravity: 8.83 g/cm3
Coefficient of Thermal Expansion per °C: 18.40 x 10-6 /K (20-300°C)
Electrical Conductivity (% IACS): 42.0% IACS @68 F
Thermal Conductivity (W/mk): 180.0 W/m K at 20 C
Modulus of Elasticity: 17000 ksi
Note:
1). the units are based upon US Customary.
2). the typical physical properties apply to age hardened products.
International Specification
Rods/Bars/Square/Hex.: UNS.C31400, ASTM B140, CDA 314
European Standards: CuZn9Pb2, HPb89-2, MS89Pb
Note:
ASTM: American Society for Testing and Materials
Note: Unless otherwise specified, material will be produced to ASTM.
Mechanical Properties:
The detailed Mechanical Properties will be available on request from customers.
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