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.
| Cu | 87 to 92 | |
| Al | 8.0 to 10.5 | |
| Fe | 0 to 1.2 | |
| Ni | 0 to 1.0 | |
| Mn | 0 to 0.5 | |
| Zn | 0 to 0.5 | |
| Sn | 0 to 0.3 | |
| Pb | 0 to 0.3 | |
| 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