EN CC381H (CuNi30Fe1Mn1-C) Copper-Nickel
CC381H copper-nickel is a copper-nickel alloy formulated for casting. Cited properties are appropriate for the as-fabricated (no temper or treatment) condition. CC381H is the EN numeric designation for this material. CuNi30Fe1Mn1-C is the EN chemical designation.
It has a moderately high heat capacity among the cast copper-nickels in the database.
The graph bars on the material properties cards below compare CC381H copper-nickel to: cast copper-nickels (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
91
Elastic (Young's, Tensile) Modulus
140 GPa 20 x 106 psi
Elongation at Break
20 %
Poisson's Ratio
0.33
Shear Modulus
52 GPa 7.5 x 106 psi
Tensile Strength: Ultimate (UTS)
380 MPa 55 x 103 psi
Tensile Strength: Yield (Proof)
140 MPa 20 x 103 psi
Thermal Properties
Latent Heat of Fusion
240 J/g
Maximum Temperature: Mechanical
260 °C 500 °F
Melting Completion (Liquidus)
1180 °C 2150 °F
Melting Onset (Solidus)
1120 °C 2050 °F
Specific Heat Capacity
410 J/kg-K 0.1 BTU/lb-°F
Thermal Conductivity
30 W/m-K 17 BTU/h-ft-°F
Thermal Expansion
16 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
6.8 % IACS
Electrical Conductivity: Equal Weight (Specific)
6.9 % IACS
Otherwise Unclassified Properties
Base Metal Price
40 % relative
Density
8.9 g/cm3 560 lb/ft3
Embodied Carbon
5.0 kg CO2/kg material
Embodied Energy
73 MJ/kg 31 x 103 BTU/lb
Embodied Water
280 L/kg 34 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
60 MJ/m3
Resilience: Unit (Modulus of Resilience)
68 kJ/m3
Stiffness to Weight: Axial
8.6 points
Stiffness to Weight: Bending
19 points
Strength to Weight: Axial
12 points
Strength to Weight: Bending
13 points
Thermal Diffusivity
8.4 mm2/s
Thermal Shock Resistance
13 points
Alloy Composition
Among cast copper alloys, the composition of CC381H copper-nickel is notable for containing a comparatively high amount of nickel (Ni). Nickel is used to improve strength (particularly at elevated temperatures) and corrosion resistance. It also creates the need for additional care during casting.
| Cu | 64.5 to 69.9 | |
| Ni | 29 to 31 | |
| Fe | 0.5 to 1.5 | |
| Mn | 0.6 to 1.2 | |
| Zn | 0 to 0.5 | |
| Si | 0 to 0.1 | |
| C | 0 to 0.030 | |
| Pb | 0 to 0.030 | |
| P | 0 to 0.010 | |
| S | 0 to 0.010 | |
| 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