Annealed (OS050) C23000 Brass
OS050 C23000 brass is C23000 brass in the OS050 (annealed to 0.050mm grain size) temper. It has the lowest strength and highest ductility compared to the other variants of C23000 brass. The graph bars on the material properties cards below compare OS050 C23000 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
47 %
Poisson's Ratio
0.33
Rockwell F Hardness
59
Shear Modulus
42 GPa 6.1 x 106 psi
Shear Strength
220 MPa 31 x 103 psi
Tensile Strength: Ultimate (UTS)
280 MPa 40 x 103 psi
Tensile Strength: Yield (Proof)
83 MPa 12 x 103 psi
Thermal Properties
Latent Heat of Fusion
190 J/g
Maximum Temperature: Mechanical
170 °C 340 °F
Melting Completion (Liquidus)
1030 °C 1880 °F
Melting Onset (Solidus)
990 °C 1810 °F
Specific Heat Capacity
390 J/kg-K 0.092 BTU/lb-°F
Thermal Conductivity
160 W/m-K 92 BTU/h-ft-°F
Thermal Expansion
19 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
37 % IACS
Electrical Conductivity: Equal Weight (Specific)
39 % IACS
Otherwise Unclassified Properties
Base Metal Price
28 % relative
Calomel Potential
-350 mV
Density
8.6 g/cm3 540 lb/ft3
Embodied Carbon
2.6 kg CO2/kg material
Embodied Energy
43 MJ/kg 18 x 103 BTU/lb
Embodied Water
310 L/kg 38 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
99 MJ/m3
Resilience: Unit (Modulus of Resilience)
31 kJ/m3
Stiffness to Weight: Axial
7.2 points
Stiffness to Weight: Bending
19 points
Strength to Weight: Axial
8.9 points
Strength to Weight: Bending
11 points
Thermal Diffusivity
48 mm2/s
Thermal Shock Resistance
9.4 points
Alloy Composition
| Cu | 84 to 86 | |
| Zn | 13.7 to 16 | |
| Fe | 0 to 0.050 | |
| Pb | 0 to 0.050 | |
| res. | 0 to 0.2 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Further Reading
Copper: Its Trade, Manufacture, Use, and Environmental Status, Gunter Joseph, 2001
Properties and Selection: Nonferrous Alloys and Special-Purpose Materials, ASM Handbook vol. 2, ASM International, 1993