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EN CC763S (CuZn32AI2Mn2Fe1-C) Brass

CC763S brass is a brass formulated for casting. Cited properties are appropriate for the as-fabricated (no temper or treatment) condition. CC763S is the EN numeric designation for this material. CuZn32AI2Mn2Fe1-C is the EN chemical designation.

It has a fairly low ductility among cast brasses. In addition, it has a moderately high embodied energy and a moderately high electrical conductivity.

The graph bars on the material properties cards below compare CC763S 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


Elastic (Young's, Tensile) Modulus

110 GPa 16 x 106 psi

Elongation at Break

7.3 %

Poisson's Ratio


Shear Modulus

41 GPa 6.0 x 106 psi

Tensile Strength: Ultimate (UTS)

490 MPa 71 x 103 psi

Tensile Strength: Yield (Proof)

270 MPa 40 x 103 psi

Thermal Properties

Latent Heat of Fusion

190 J/g

Maximum Temperature: Mechanical

140 °C 290 °F

Melting Completion (Liquidus)

870 °C 1610 °F

Melting Onset (Solidus)

830 °C 1520 °F

Specific Heat Capacity

400 J/kg-K 0.1 BTU/lb-°F

Thermal Expansion

20 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

29 % IACS

Electrical Conductivity: Equal Weight (Specific)

32 % IACS

Otherwise Unclassified Properties

Base Metal Price

24 % relative


8.0 g/cm3 500 lb/ft3

Embodied Carbon

2.9 kg CO2/kg material

Embodied Energy

49 MJ/kg 21 x 103 BTU/lb

Embodied Water

330 L/kg 40 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

30 MJ/m3

Resilience: Unit (Modulus of Resilience)

340 kJ/m3

Stiffness to Weight: Axial

7.5 points

Stiffness to Weight: Bending

20 points

Strength to Weight: Axial

17 points

Strength to Weight: Bending

17 points

Thermal Shock Resistance

16 points

Alloy Composition

Among cast copper alloys, the composition of CC763S brass is notable for containing comparatively high amounts of iron (Fe) and aluminum (Al). Iron is used to increase strength inexpensively. Aluminum is used to add strength and oxidation resistance, at the cost of requiring additional care during casting.

Copper (Cu)Cu 56.5 to 67
Zinc (Zn)Zn 18.9 to 41
Manganese (Mn)Mn 1.0 to 3.5
Aluminum (Al)Al 1.0 to 2.5
Nickel (Ni)Ni 0 to 2.5
Iron (Fe)Fe 0.5 to 2.0
Lead (Pb)Pb 0 to 1.5
Silicon (Si)Si 0 to 1.0
Tin (Sn)Sn 0 to 1.0
Antimony (Sb)Sb 0 to 0.080

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