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CC381H Copper-nickel vs. EN 1.6781 Steel

CC381H copper-nickel belongs to the copper alloys classification, while EN 1.6781 steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is CC381H copper-nickel and the bottom bar is EN 1.6781 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 91
250
Elastic (Young's, Tensile) Modulus, GPa 140
190
Elongation at Break, % 20
17
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 52
73
Tensile Strength: Ultimate (UTS), MPa 380
830
Tensile Strength: Yield (Proof), MPa 140
680

Thermal Properties

Latent Heat of Fusion, J/g 240
260
Maximum Temperature: Mechanical, °C 260
450
Melting Completion (Liquidus), °C 1180
1460
Melting Onset (Solidus), °C 1120
1420
Specific Heat Capacity, J/kg-K 410
470
Thermal Conductivity, W/m-K 30
44
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 6.8
7.9
Electrical Conductivity: Equal Weight (Specific), % IACS 6.9
9.1

Otherwise Unclassified Properties

Base Metal Price, % relative 40
5.0
Density, g/cm3 8.9
7.9
Embodied Carbon, kg CO2/kg material 5.0
1.9
Embodied Energy, MJ/kg 73
25
Embodied Water, L/kg 280
60

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 60
130
Resilience: Unit (Modulus of Resilience), kJ/m3 68
1220
Stiffness to Weight: Axial, points 8.6
13
Stiffness to Weight: Bending, points 19
24
Strength to Weight: Axial, points 12
29
Strength to Weight: Bending, points 13
25
Thermal Diffusivity, mm2/s 8.4
12
Thermal Shock Resistance, points 13
24

Alloy Composition

Aluminum (Al), % 0 to 0.010
0
Carbon (C), % 0 to 0.030
0.15 to 0.19
Chromium (Cr), % 0
1.3 to 1.8
Copper (Cu), % 64.5 to 69.9
0
Iron (Fe), % 0.5 to 1.5
92.6 to 94.6
Lead (Pb), % 0 to 0.030
0
Manganese (Mn), % 0.6 to 1.2
0.55 to 0.8
Molybdenum (Mo), % 0
0.45 to 0.6
Nickel (Ni), % 29 to 31
3.0 to 3.5
Phosphorus (P), % 0 to 0.010
0 to 0.015
Silicon (Si), % 0 to 0.1
0 to 0.5
Sulfur (S), % 0 to 0.010
0 to 0.015
Zinc (Zn), % 0 to 0.5
0