Casting Standards :

ASTM (B Series) B584
SAE (J Series) J462
Federal (QQ-C- Series) 390
Military (Mil-C- Series) 22229

Specification Composition :

Minimum Maximum
Copper (Cu) 89
Tin (Sn) 1
Lead (Pb) 0.5
Zinc (Zn) 5
Iron (Fe) 2.5
Antimony (SB) 8
Aluminum (Al) 1.5
Manganese (Mn) 1.5
Silicon (Si) 1 5

Specification Properties :

Heat Treat ‘F’ Denotes As Cast Heat Treat State Minimum
Tensile Strength (ksi) F 45
Yield Strength (.5% extension under load) (ksi) F 18

Typical Properties :

Heat Treat State Typical
Modulus of Elasticity (ksi) 15000
Hardness (Brinell) (HB @ 3000kg) 85
Machinability (% of free cutting brass) 40
Impact Strength (Izod) (ft-lb) 33
Shear Strength (ksi) 28
Compressive Strength (0.001 in. set/in.) (ksi) 18
Compressive Strength (0.010 in. set/in.) (ksi) 60
Melting Range (Liquidus-Solidus)(F) 1580-1780
Thermal Conductivity (Btu/sq.ft/ft./hr/F @ 68F) 16.4
Specific Heat (Btu/lb/F @ 68F) 0.09
Electrical Conductivity (% IACS @ 68F) 6
Density (lb/cu.in. @ 68F) 0.302
Patternmakers Shrinkage (in/ft) 1/4
Drossing Low
Gassing High
Fluidity High
Elongation (2 inch gauge length) (%) F 30