Commercial Bronze


Application & Characteristics
Marine hardware, primer caps and base for vitreous enamel in costume jewellery.

Chemical Composition (%)
Cu90; Zn 10

Physical Properties
Melting Range (°F)	1870 – 1910
Density (lbs/in³) 68F	0.318
Thermal Expansion (in/in °Fx10 to the power of -6)	10.2 (68-572F)
Electrical Resistivity (ohms/cir mil/ft.) 68F	23.6

Mechanical Properties – Temper = A
Tensile Strength (psi x 10³)	37
Yield Strength (psi x 10³)	10
Elongation ( % )	45
Hardness	F53(Rockwell)

Mechanical Properties – Temper = H
Tensile Strength (psi x 10³)	61
Yield Strength (psi x 10³)	54
Elongation ( % )	5
Hardness	B70(Rockwell)