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EN CC330G (CuAI9-C) Aluminum Bronze

CC330G bronze is a bronze formulated for casting. Cited properties are appropriate for the as-fabricated (no temper or treatment) condition. CC330G is the EN numeric designation for this material. CuAI9-C is the EN chemical designation.

It has a fairly high electrical conductivity among cast bronzes. In addition, it has a fairly high melting temperature and a moderately high heat capacity.

The graph bars on the material properties cards below compare CC330G bronze to: cast 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

Brinell Hardness

110

Elastic (Young's, Tensile) Modulus

110 GPa 16 x 106 psi

Elongation at Break

20 %

Poisson's Ratio

0.34

Shear Modulus

42 GPa 6.1 x 106 psi

Tensile Strength: Ultimate (UTS)

530 MPa 77 x 103 psi

Tensile Strength: Yield (Proof)

190 MPa 28 x 103 psi

Thermal Properties

Latent Heat of Fusion

230 J/g

Maximum Temperature: Mechanical

220 °C 420 °F

Melting Completion (Liquidus)

1050 °C 1920 °F

Melting Onset (Solidus)

1000 °C 1830 °F

Specific Heat Capacity

430 J/kg-K 0.1 BTU/lb-°F

Thermal Conductivity

62 W/m-K 36 BTU/h-ft-°F

Thermal Expansion

18 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

14 % IACS

Electrical Conductivity: Equal Weight (Specific)

15 % IACS

Otherwise Unclassified Properties

Base Metal Price

29 % relative

Density

8.4 g/cm3 520 lb/ft3

Embodied Carbon

3.2 kg CO2/kg material

Embodied Energy

52 MJ/kg 22 x 103 BTU/lb

Embodied Water

390 L/kg 47 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

82 MJ/m3

Resilience: Unit (Modulus of Resilience)

170 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

17 points

Thermal Diffusivity

17 mm2/s

Thermal Shock Resistance

19 points

Alloy Composition

Among cast copper alloys, the composition of CC330G bronze is notable for containing a comparatively high amount of aluminum (Al) and including manganese (Mn). Aluminum is used to add strength and oxidation resistance, at the cost of requiring additional care during casting. Manganese is used to improve strength without a proportional reduction in ductility.

Copper (Cu) 87 to 92
Aluminum (Al) 8.0 to 10.5
Iron (Fe) 0 to 1.2
Nickel (Ni) 0 to 1.0
Manganese (Mn) 0 to 0.5
Zinc (Zn) 0 to 0.5
Tin (Sn) 0 to 0.3
Lead (Pb) 0 to 0.3
Silicon (Si) 0 to 0.2

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

Followup Questions

Similar Alloys

Further Reading

EN 1982: Copper and copper alloys - Ingots and castings