Shanghai Unique Alloy Co.Ltd 

Focus on Copper Alloy 

C31600 Leaded Commercial Bronze

Form:Wire, Bar, Plate, Shapes


Chemical Composition:

Cu: 87.50-90.50%
Pb: 1.30-2.50%
Ni: 0.70-1.20% Max.
P:  0.04-0.10%
Fe: 0.10% Max.
Zn: Balance
Note: Copper plus additions equal 99.60% minimum.


Typical Physical Properties:

Specific Gravity: 8.86 g/cm3
Coefficient of Thermal Expansion per °C: 18.40 x 10-6 /K (20-300°C)
Electrical Conductivity (% IACS): 32.0% IACS @ 68 F
Thermal Conductivity (W/mk): 140.2 W/m ∙ ˚K at 20 C 
Modulus of Elasticity: 17000 ksi

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.C31600, ASTM B140, CDA 316