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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

Copper (Cu) 89 to 91
Zinc (Zn) 8.7 to 11
Iron (Fe) 0 to 0.050
Lead (Pb) 0 to 0.050
Residuals 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