Leaded Commercial Bronze, Nickel Bearing Copper Alloy - CDA 316

Element

Composition (%)

Copper (Cu)

85.0 - 90.0

Lead (Pb)

1.5 - 3.0

Nickel (Ni)

1.0 - 2.0

Zinc (Zn)

Rem.

Iron (Fe)

0.25 max

Manganese (Mn)

0.5 max

Tin (Sn)

0.5 max

Aluminum (Al)

0.2 max

Antimony (Sb)

0.05 max

Phosphorus (P)

0.01 max

Property

Value

Density

0.285 lb/in³ (7.90 g/cm³)

Melting Point

2450 - 2630°F (1390 - 1440°C)

Electrical Resistivity

445 microhm-cm at 68°F

Specific Heat

0.11 BTU/lb/°F (32 - 212°F)

Modulus of Elasticity

29 x 10^6 psi (200 GPa)

Property

Value

Tensile Strength (Ultimate)

70 - 90 ksi (483 - 620 MPa)

Yield Strength (0.2% Offset)

30 - 60 ksi (207 - 414 MPa)

Elongation (in 2 inches)

10 - 25%

Hardness (Rockwell B)

70 - 95 HRB

Modulus of Elasticity

17 x 10^6 psi (117 GPa)

Property

Value

Thermal Conductivity

10.1 BTU/hr/ft²/ft/°F (14.6 W/m·K) at 212°F (100°C)

Specific Heat Capacity

0.11 BTU/lb·°F (450 J/kg·K)

Coefficient of Thermal Expansion

10.2 × 10⁻⁶ per °F (68-572 °F)

Melting Point

2550 - 2650°F (1390 - 1454°C)

Density

Approximately 0.285 lb/in³ (7.90 g/cm³) at 68°F (20°C)

Property

Characteristic

Machinability

Excellent

Weldability

Good, but post-weld annealing recommended for heavy sections

Formability

Good for cold working; fair for hot working

Cold Working

Increases strength and hardness

Hot Working Temperature Range

1149 - 1260°F (620 - 680°C)

Annealing Temperature

1010 - 1120°F (543 - 605°C)

Brazing and Soldering

Good

Fusion Welding

Excellent with appropriate filler rods

Post-Weld Treatment

Recommended to restore corrosion resistance in welded areas