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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.

Copper (Cu) 64.5 to 69.9
Nickel (Ni) 29 to 31
Iron (Fe) 0.5 to 1.5
Manganese (Mn) 0.6 to 1.2
Zinc (Zn) 0 to 0.5
Silicon (Si) 0 to 0.1
Carbon (C) 0 to 0.030
Lead (Pb) 0 to 0.030
Phosphorus (P) 0 to 0.010
Sulfur (S) 0 to 0.010
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