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Soft Annealed (O60) C61300 Bronze

O60 C61300 bronze is C61300 bronze in the O60 (soft annealed) temper. It has the highest ductility compared to the other variants of C61300 bronze. The graph bars on the material properties cards below compare O60 C61300 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 17 x 106 psi

Elongation at Break

40 %

Poisson's Ratio

0.34

Shear Modulus

43 GPa 6.2 x 106 psi

Shear Strength

380 MPa 55 x 103 psi

Tensile Strength: Ultimate (UTS)

550 MPa 80 x 103 psi

Tensile Strength: Yield (Proof)

230 MPa 34 x 103 psi

Thermal Properties

Latent Heat of Fusion

220 J/g

Maximum Temperature: Mechanical

210 °C 420 °F

Melting Completion (Liquidus)

1050 °C 1910 °F

Melting Onset (Solidus)

1040 °C 1910 °F

Specific Heat Capacity

420 J/kg-K 0.1 BTU/lb-°F

Thermal Conductivity

55 W/m-K 32 BTU/h-ft-°F

Thermal Expansion

18 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

12 % IACS

Electrical Conductivity: Equal Weight (Specific)

13 % IACS

Otherwise Unclassified Properties

Base Metal Price

29 % relative

Density

8.5 g/cm3 530 lb/ft3

Embodied Carbon

3.0 kg CO2/kg material

Embodied Energy

49 MJ/kg 21 x 103 BTU/lb

Embodied Water

370 L/kg 44 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

180 MJ/m3

Resilience: Unit (Modulus of Resilience)

240 kJ/m3

Stiffness to Weight: Axial

7.5 points

Stiffness to Weight: Bending

19 points

Strength to Weight: Axial

18 points

Strength to Weight: Bending

18 points

Thermal Diffusivity

15 mm2/s

Thermal Shock Resistance

19 points

Alloy Composition

Copper (Cu)Cu 88 to 91.8
Aluminum (Al)Al 6.0 to 7.5
Iron (Fe)Fe 2.0 to 3.0
Tin (Sn)Sn 0.2 to 0.5
Manganese (Mn)Mn 0 to 0.2
Zinc (Zn)Zn 0 to 0.2
Nickel (Ni)Ni 0 to 0.15
Silicon (Si)Si 0 to 0.1
Phosphorus (P)P 0 to 0.015
Lead (Pb)Pb 0 to 0.010
Residualsres. 0 to 0.2

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

Followup Questions

Further Reading

ASTM B169: Standard Specification for Aluminum Bronze Sheet, Strip, and Rolled Bar

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

CRC Materials Science and Engineering Handbook, 4th ed., James F. Shackelford et al. (editors), 2015