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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.

Copper (Cu) 83 to 88
Zinc (Zn) 10.7 to 17
Lead (Pb) 0 to 0.5
Tin (Sn) 0 to 0.3
Arsenic (As) 0.050 to 0.15
Iron (Fe) 0 to 0.15
Manganese (Mn) 0 to 0.1
Nickel (Ni) 0 to 0.1
Silicon (Si) 0 to 0.020
Aluminum (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