Leaded Commercial Bronze (Nickel-Bearing)

Used in a wide variety of builders hardware, electrical, fasteners and industrial applications.

To download a detailed spec sheet on this alloy from the Copper Development Association, click the button below.

Chemical Composition

Copper (Cu)

87.5 – 90.5%

Lead (Pb)

1.3 – 2.5%

Iron (Fe)

0.10% Max

Nickel (Ni)

0.7 – 1.2%

Zinc (Zn)


Cu + Sum of Named Elements

P 0.04 – 0.10

C31600 alloy is sometimes referred to as leaded commercial bronze (nickel-bearing) and is often used in electrical connectors, fasteners, nuts, screws, screw machine parts.