EN CC760S (CuZn15As-C) Arsenical Brass
CC760S brass is a brass formulated for casting. Cited properties are appropriate for the as-fabricated (no temper or treatment) condition. CC760S is the EN numeric designation for this material. CuZn15As-C is the EN chemical designation.
It has the lowest tensile strength among cast brasses. In addition, it has a very low embodied energy and a very high electrical conductivity.
The graph bars on the material properties cards below compare CC760S 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
51
Elastic (Young's, Tensile) Modulus
110 GPa 16 x 106 psi
Elongation at Break
22 %
Poisson's Ratio
0.33
Shear Modulus
42 GPa 6.1 x 106 psi
Tensile Strength: Ultimate (UTS)
180 MPa 26 x 103 psi
Tensile Strength: Yield (Proof)
80 MPa 12 x 103 psi
Thermal Properties
Latent Heat of Fusion
190 J/g
Maximum Temperature: Mechanical
170 °C 340 °F
Melting Completion (Liquidus)
1000 °C 1820 °F
Melting Onset (Solidus)
940 °C 1730 °F
Specific Heat Capacity
390 J/kg-K 0.092 BTU/lb-°F
Thermal Conductivity
150 W/m-K 86 BTU/h-ft-°F
Thermal Expansion
19 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
38 % IACS
Electrical Conductivity: Equal Weight (Specific)
40 % IACS
Otherwise Unclassified Properties
Base Metal Price
28 % relative
Density
8.6 g/cm3 540 lb/ft3
Embodied Carbon
2.6 kg CO2/kg material
Embodied Energy
43 MJ/kg 18 x 103 BTU/lb
Embodied Water
320 L/kg 38 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
33 MJ/m3
Resilience: Unit (Modulus of Resilience)
29 kJ/m3
Stiffness to Weight: Axial
7.2 points
Stiffness to Weight: Bending
19 points
Strength to Weight: Axial
5.8 points
Strength to Weight: Bending
8.2 points
Thermal Diffusivity
45 mm2/s
Thermal Shock Resistance
6.2 points
Alloy Composition
Among cast copper alloys, the composition of CC760S brass is notable for including arsenic (As). Arsenic is used to protect the alloy against dezincification.
| Cu | 83 to 88 | |
| Zn | 10.7 to 17 | |
| Pb | 0 to 0.5 | |
| Sn | 0 to 0.3 | |
| As | 0.050 to 0.15 | |
| Fe | 0 to 0.15 | |
| Mn | 0 to 0.1 | |
| Ni | 0 to 0.1 | |
| Si | 0 to 0.020 | |
| Al | 0 to 0.010 |
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