EN CC766S (CuZn37AI1-C) Aluminum Brass
CC766S brass is a brass formulated for casting. Cited properties are appropriate for the as-fabricated (no temper or treatment) condition. CC766S is the EN numeric designation for this material. CuZn37AI1-C is the EN chemical designation.
It has a fairly high electrical conductivity among cast brasses. In addition, it has a fairly low melting temperature and a moderately high ductility.
The graph bars on the material properties cards below compare CC766S brass to: cast brasses (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
120
Elastic (Young's, Tensile) Modulus
110 GPa 15 x 106 psi
Elongation at Break
28 %
Poisson's Ratio
0.31
Shear Modulus
40 GPa 5.9 x 106 psi
Tensile Strength: Ultimate (UTS)
500 MPa 73 x 103 psi
Tensile Strength: Yield (Proof)
190 MPa 28 x 103 psi
Thermal Properties
Latent Heat of Fusion
180 J/g
Maximum Temperature: Mechanical
130 °C 260 °F
Melting Completion (Liquidus)
840 °C 1550 °F
Melting Onset (Solidus)
800 °C 1470 °F
Specific Heat Capacity
390 J/kg-K 0.094 BTU/lb-°F
Thermal Conductivity
89 W/m-K 51 BTU/h-ft-°F
Thermal Expansion
20 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
32 % IACS
Electrical Conductivity: Equal Weight (Specific)
36 % IACS
Otherwise Unclassified Properties
Base Metal Price
24 % relative
Density
8.0 g/cm3 500 lb/ft3
Embodied Carbon
2.8 kg CO2/kg material
Embodied Energy
48 MJ/kg 21 x 103 BTU/lb
Embodied Water
330 L/kg 40 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
110 MJ/m3
Resilience: Unit (Modulus of Resilience)
180 kJ/m3
Stiffness to Weight: Axial
7.3 points
Stiffness to Weight: Bending
20 points
Strength to Weight: Axial
17 points
Strength to Weight: Bending
18 points
Thermal Diffusivity
28 mm2/s
Thermal Shock Resistance
17 points
Alloy Composition
Among cast copper alloys, the composition of CC766S brass 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 | 58 to 64 | |
| Zn | 29.5 to 41.7 | |
| Al | 0.3 to 1.8 | |
| Ni | 0 to 2.0 | |
| Si | 0 to 0.6 | |
| Mn | 0 to 0.5 | |
| Fe | 0 to 0.5 | |
| Sn | 0 to 0.5 | |
| Pb | 0 to 0.5 | |
| Sb | 0 to 0.1 |
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