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UNS C61000 Aluminum Bronze

C61000 bronze is a bronze formulated for primary forming into wrought products. C61000 is the UNS number for this material. Additionally, the British Standard (BS) designation is CA102. It can have a moderately low tensile strength among the wrought bronzes in the database.

The properties of C61000 bronze include two common variations. This page shows summary ranges across both of them. For more specific values, follow the links immediately below. The graph bars on the material properties cards further below compare C61000 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

29 to 50 %

Poisson's Ratio

0.34

Rockwell B Hardness

60 to 85

Shear Modulus

42 GPa 6.1 x 106 psi

Shear Strength

280 to 300 MPa 40 to 44 x 103 psi

Tensile Strength: Ultimate (UTS)

390 to 460 MPa 57 to 67 x 103 psi

Tensile Strength: Yield (Proof)

150 to 190 MPa 22 to 28 x 103 psi

Thermal Properties

Latent Heat of Fusion

220 J/g

Maximum Temperature: Mechanical

210 °C 420 °F

Melting Completion (Liquidus)

1040 °C 1910 °F

Melting Onset (Solidus)

990 °C 1810 °F

Specific Heat Capacity

420 J/kg-K 0.1 BTU/lb-°F

Thermal Conductivity

69 W/m-K 40 BTU/h-ft-°F

Thermal Expansion

18 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

15 % IACS

Electrical Conductivity: Equal Weight (Specific)

16 % 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)

110 to 160 MJ/m3

Resilience: Unit (Modulus of Resilience)

100 to 160 kJ/m3

Stiffness to Weight: Axial

7.4 points

Stiffness to Weight: Bending

19 points

Strength to Weight: Axial

13 to 15 points

Strength to Weight: Bending

14 to 16 points

Thermal Diffusivity

19 mm2/s

Thermal Shock Resistance

14 to 16 points

Alloy Composition

Among wrought copper alloys, the composition of C61000 bronze is notable for including aluminum (Al) and silicon (Si). Aluminum is used to add strength and oxidation resistance. Silicon is used to increase strength at the expense of ductility. It also lowers the melting temperature and raises the fluidity of the alloy.

Copper (Cu) 90.2 to 94
Aluminum (Al) 6.0 to 8.5
Iron (Fe) 0 to 0.5
Zinc (Zn) 0 to 0.2
Silicon (Si) 0 to 0.1
Lead (Pb) 0 to 0.020
Residuals 0 to 0.5

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

Followup Questions

Similar Alloys