Soft Annealed (O60) C32000 Brass
O60 C32000 brass is C32000 brass in the O60 (soft annealed) temper. It has the lowest strength and highest ductility compared to the other variants of C32000 brass. The graph bars on the material properties cards below compare O60 C32000 brass to: wrought brasses (top), all copper alloys (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.
Mechanical Properties
Elastic (Young's, Tensile) Modulus
110 GPa 16 x 106 psi
Elongation at Break
29 %
Poisson's Ratio
0.33
Shear Modulus
41 GPa 6.0 x 106 psi
Shear Strength
180 MPa 26 x 103 psi
Tensile Strength: Ultimate (UTS)
270 MPa 40 x 103 psi
Tensile Strength: Yield (Proof)
78 MPa 11 x 103 psi
Thermal Properties
Latent Heat of Fusion
190 J/g
Maximum Temperature: Mechanical
170 °C 340 °F
Melting Completion (Liquidus)
1020 °C 1880 °F
Melting Onset (Solidus)
990 °C 1820 °F
Specific Heat Capacity
380 J/kg-K 0.091 BTU/lb-°F
Thermal Conductivity
160 W/m-K 90 BTU/h-ft-°F
Thermal Expansion
19 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
36 % IACS
Electrical Conductivity: Equal Weight (Specific)
37 % IACS
Otherwise Unclassified Properties
Base Metal Price
28 % relative
Density
8.7 g/cm3 540 lb/ft3
Embodied Carbon
2.6 kg CO2/kg material
Embodied Energy
42 MJ/kg 18 x 103 BTU/lb
Embodied Water
310 L/kg 37 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
59 MJ/m3
Resilience: Unit (Modulus of Resilience)
28 kJ/m3
Stiffness to Weight: Axial
7.1 points
Stiffness to Weight: Bending
18 points
Strength to Weight: Axial
8.8 points
Strength to Weight: Bending
11 points
Thermal Diffusivity
47 mm2/s
Thermal Shock Resistance
9.5 points
Alloy Composition
| Cu | 83.5 to 86.5 | |
| Zn | 10.6 to 15 | |
| Pb | 1.5 to 2.2 | |
| Ni | 0 to 0.25 | |
| Fe | 0 to 0.1 | |
| res. | 0 to 0.4 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Further Reading
ASTM B140: Standard Specification for Copper-Zinc-Lead (Red Brass or Hardware Bronze) Rod, Bar, and Shapes
ASM Specialty Handbook: Copper and Copper Alloys, J. R. Davis (editor), 2001