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Soft Annealed (O60) C66100 Bronze

O60 C66100 bronze is C66100 bronze in the O60 (soft annealed) temper. It has the lowest strength and highest ductility compared to the other variants of C66100 bronze. The graph bars on the material properties cards below compare O60 C66100 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

120 GPa 17 x 106 psi

Elongation at Break

40 %

Poisson's Ratio

0.34

Shear Modulus

43 GPa 6.2 x 106 psi

Shear Strength

280 MPa 41 x 103 psi

Tensile Strength: Ultimate (UTS)

410 MPa 60 x 103 psi

Tensile Strength: Yield (Proof)

120 MPa 17 x 103 psi

Thermal Properties

Latent Heat of Fusion

260 J/g

Maximum Temperature: Mechanical

200 °C 390 °F

Melting Completion (Liquidus)

1050 °C 1930 °F

Melting Onset (Solidus)

1000 °C 1830 °F

Specific Heat Capacity

400 J/kg-K 0.1 BTU/lb-°F

Thermal Conductivity

34 W/m-K 19 BTU/h-ft-°F

Thermal Expansion

17 µm/m-K

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

300 L/kg 36 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

120 MJ/m3

Resilience: Unit (Modulus of Resilience)

60 kJ/m3

Stiffness to Weight: Axial

7.4 points

Stiffness to Weight: Bending

19 points

Strength to Weight: Axial

13 points

Strength to Weight: Bending

14 points

Thermal Diffusivity

9.7 mm2/s

Thermal Shock Resistance

15 points

Alloy Composition

Copper (Cu)Cu 92 to 97
Silicon (Si)Si 2.8 to 3.5
Manganese (Mn)Mn 0 to 1.5
Zinc (Zn)Zn 0 to 1.5
Lead (Pb)Pb 0.2 to 0.8
Iron (Fe)Fe 0 to 0.25
Residualsres. 0 to 0.5

All values are % weight. Ranges represent what is permitted under applicable standards.

Followup Questions

Further Reading

ASTM B98: Standard Specification for Copper-Silicon Alloy Rod, Bar and Shapes

ASM Specialty Handbook: Copper and Copper Alloys, J. R. Davis (editor), 2001