Brass Overview:
Brass is the generic term for a range of copper-zinc alloys with differing combinations of properties, including strength, machinability, ductility, wear-resistance, hardness, colour, antimicrobial, electrical and thermal conductivity, and corrosion resistance.
Brasses set the standard by which the machinability of other materials is judged and are also available in a very wide variety of product forms and sizes to allow minimum machining to finished dimensions. Brass does not become brittle at low temperatures like mild steel.
Brass also has excellent thermal conductivity, making it a first choice for heat exchangers (radiators). Its electrical conductivity ranges from 23 to 44% that of pure copper.
MECHANICAL PROPERTIES | METRIC | ENGLISH | REMARKS |
Tensile Strength, Ultimate | 338 - 469 MPa | 49000 - 68000 psi | |
Tensile Strength, Yield | 124 - 310 MPa | 18000 - 45000 psi | Depending on temperature |
Elongation at Break | 53% | 53% | in 457.2 mm |
Modulus of Elasticity | 97 GPa | 14100 ksi | |
Bulk Modulus | 140 GPa | 20300 ksi | Typical for Steel |
Poisson's Ratio | 0.31 | 0.31 | Calculated |
Machinability | 100% | 100% | UNS C36000 (free-cutting brass) = 100% |
Shear Modulus | 37 GPa | 5370 ksi |
COMPONENT | WT. % |
C | 60 - 63 |
Fe | Max 0.35 |
Other | Max 0.5 |
Pb | 2.5 - 3.7 |
Zn | 35.5 |