Annealed (OS050) C22000 Bronze
OS050 C22000 bronze is C22000 bronze in the OS050 (annealed to 0.050mm grain size) temper. It has the highest ductility compared to the other variants of C22000 bronze. The graph bars on the material properties cards below compare OS050 C22000 bronze to: wrought bronzes (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
45 %
Poisson's Ratio
0.33
Rockwell F Hardness
53
Shear Modulus
42 GPa 6.2 x 106 psi
Shear Strength
200 MPa 28 x 103 psi
Tensile Strength: Ultimate (UTS)
260 MPa 37 x 103 psi
Tensile Strength: Yield (Proof)
69 MPa 10 x 103 psi
Thermal Properties
Latent Heat of Fusion
200 J/g
Maximum Temperature: Mechanical
180 °C 360 °F
Melting Completion (Liquidus)
1040 °C 1910 °F
Melting Onset (Solidus)
1020 °C 1870 °F
Specific Heat Capacity
390 J/kg-K 0.092 BTU/lb-°F
Thermal Conductivity
190 W/m-K 110 BTU/h-ft-°F
Thermal Expansion
18 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
44 % IACS
Electrical Conductivity: Equal Weight (Specific)
45 % IACS
Otherwise Unclassified Properties
Base Metal Price
29 % 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)
87 MJ/m3
Resilience: Unit (Modulus of Resilience)
21 kJ/m3
Stiffness to Weight: Axial
7.2 points
Stiffness to Weight: Bending
18 points
Strength to Weight: Axial
8.1 points
Strength to Weight: Bending
10 points
Thermal Diffusivity
56 mm2/s
Thermal Shock Resistance
8.8 points
Alloy Composition
| Cu | 89 to 91 | |
| Zn | 8.7 to 11 | |
| 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