Cartridge Brass, 70%


Application & Characteristics
Used for spring qualities and superior strength among brass alloys.

Chemical Composition (%)
Cu 70; Zn 30

Physical Properties
Melting Range (°F)	1680 – 1750
Density (lbs/in³) 68F	0.308
Thermal Expansion (in/in °Fx10 to the power of -6)	11.1 (68-572F)
Electrical Resistivity (ohms/cir mil/ft.) 68F	37.0

Mechanical Properties – Temper = A
Tensile Strength (psi x 10³)	47
Yield Strength (psi x 10³)	16
Elongation ( % )	52
Hardness	F64(Rockwell)

Mechanical Properties – Temper = H
Tensile Strength (psi x 10³)	76
Yield Strength (psi x 10³)	63
Elongation ( % )	8
Hardness	B82(Rockwell)