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.
| Cu | 68 to 77 | |
| Mn | 8.0 to 15 | |
| Al | 7.0 to 9.0 | |
| Ni | 1.5 to 4.5 | |
| Fe | 2.0 to 4.0 | |
| Zn | 0 to 1.0 | |
| Sn | 0 to 0.5 | |
| Si | 0 to 0.1 | |
| Pb | 0 to 0.050 | |
| 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