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EN CC212E (CuMn11AI8Fe3Ni3-C) Manganese Bronze

CC212E bronze is a bronze formulated for casting. Cited properties are appropriate for the as-fabricated (no temper or treatment) condition. CC212E is the EN numeric designation for this material. CuMn11AI8Fe3Ni3-C is the EN chemical designation.

It has a very low electrical conductivity among cast bronzes. In addition, it has a fairly high heat capacity and a very high tensile strength.

The graph bars on the material properties cards below compare CC212E bronze to: cast bronzes (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

170

Elastic (Young's, Tensile) Modulus

130 GPa 18 x 106 psi

Elongation at Break

20 %

Poisson's Ratio

0.34

Shear Modulus

47 GPa 6.8 x 106 psi

Tensile Strength: Ultimate (UTS)

710 MPa 100 x 103 psi

Tensile Strength: Yield (Proof)

310 MPa 45 x 103 psi

Thermal Properties

Latent Heat of Fusion

230 J/g

Maximum Temperature: Mechanical

220 °C 430 °F

Melting Completion (Liquidus)

1080 °C 1970 °F

Melting Onset (Solidus)

1020 °C 1870 °F

Specific Heat Capacity

440 J/kg-K 0.11 BTU/lb-°F

Thermal Expansion

18 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

3.0 % IACS

Electrical Conductivity: Equal Weight (Specific)

3.3 % IACS

Otherwise Unclassified Properties

Base Metal Price

27 % relative

Density

8.2 g/cm3 510 lb/ft3

Embodied Carbon

3.4 kg CO2/kg material

Embodied Energy

55 MJ/kg 24 x 103 BTU/lb

Embodied Water

370 L/kg 44 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

120 MJ/m3

Resilience: Unit (Modulus of Resilience)

390 kJ/m3

Stiffness to Weight: Axial

8.5 points

Stiffness to Weight: Bending

20 points

Strength to Weight: Axial

24 points

Strength to Weight: Bending

21 points

Thermal Shock Resistance

22 points

Alloy Composition

Among cast copper alloys, the composition of CC212E bronze 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) 68 to 77
Manganese (Mn) 8.0 to 15
Aluminum (Al) 7.0 to 9.0
Nickel (Ni) 1.5 to 4.5
Iron (Fe) 2.0 to 4.0
Zinc (Zn) 0 to 1.0
Tin (Sn) 0 to 0.5
Silicon (Si) 0 to 0.1
Lead (Pb) 0 to 0.050
Magnesium (Mg) 0 to 0.050

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