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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.

Copper (Cu) 61.5 to 64.5
Zinc (Zn) 31.5 to 36.7
Lead (Pb) 1.5 to 2.2
Aluminum (Al) 0.3 to 0.7
Iron (Fe) 0 to 0.3
Tin (Sn) 0 to 0.3
Nickel (Ni) 0 to 0.2
Arsenic (As) 0.040 to 0.14
Antimony (Sb) 0 to 0.14
Manganese (Mn) 0 to 0.1
Silicon (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