EN CC752S (CuZn35Pb2AI-C) Leaded Brass
CC752S brass is a brass formulated for casting. Cited properties are appropriate for the as-fabricated (no temper or treatment) condition. CC752S is the EN numeric designation for this material. CuZn35Pb2AI-C is the EN chemical designation.
It has a fairly low ductility and a fairly low melting temperature among cast brasses.
The graph bars on the material properties cards below compare CC752S 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
100
Elastic (Young's, Tensile) Modulus
100 GPa 15 x 106 psi
Elongation at Break
8.4 %
Poisson's Ratio
0.31
Shear Modulus
40 GPa 5.8 x 106 psi
Tensile Strength: Ultimate (UTS)
350 MPa 50 x 103 psi
Tensile Strength: Yield (Proof)
190 MPa 28 x 103 psi
Thermal Properties
Latent Heat of Fusion
170 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
380 J/kg-K 0.092 BTU/lb-°F
Thermal Conductivity
110 W/m-K 63 BTU/h-ft-°F
Thermal Expansion
21 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
25 % IACS
Electrical Conductivity: Equal Weight (Specific)
28 % IACS
Otherwise Unclassified Properties
Base Metal Price
24 % relative
Density
8.1 g/cm3 510 lb/ft3
Embodied Carbon
2.7 kg CO2/kg material
Embodied Energy
46 MJ/kg 20 x 103 BTU/lb
Embodied Water
330 L/kg 39 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
25 MJ/m3
Resilience: Unit (Modulus of Resilience)
180 kJ/m3
Stiffness to Weight: Axial
7.1 points
Stiffness to Weight: Bending
19 points
Strength to Weight: Axial
12 points
Strength to Weight: Bending
13 points
Thermal Diffusivity
35 mm2/s
Thermal Shock Resistance
12 points
Alloy Composition
Among cast copper alloys, the composition of CC752S brass is notable for including arsenic (As). Arsenic is used to protect the alloy against dezincification.
| Cu | 61.5 to 64.5 | |
| Zn | 31.5 to 36.7 | |
| Pb | 1.5 to 2.2 | |
| Al | 0.3 to 0.7 | |
| Fe | 0 to 0.3 | |
| Sn | 0 to 0.3 | |
| Ni | 0 to 0.2 | |
| As | 0.040 to 0.14 | |
| Sb | 0 to 0.14 | |
| Mn | 0 to 0.1 | |
| Si | 0 to 0.020 |
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