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CC381H Copper-nickel vs. Nickel 686

CC381H copper-nickel belongs to the copper alloys classification, while nickel 686 belongs to the nickel alloys. They have a modest 31% of their average alloy composition in common, which, by itself, doesn't mean much. There are 28 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is CC381H copper-nickel and the bottom bar is nickel 686.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 140
220
Elongation at Break, % 20
51
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 52
77
Tensile Strength: Ultimate (UTS), MPa 380
780
Tensile Strength: Yield (Proof), MPa 140
350

Thermal Properties

Latent Heat of Fusion, J/g 240
320
Maximum Temperature: Mechanical, °C 260
980
Melting Completion (Liquidus), °C 1180
1380
Melting Onset (Solidus), °C 1120
1340
Specific Heat Capacity, J/kg-K 410
420
Thermal Conductivity, W/m-K 30
9.8
Thermal Expansion, µm/m-K 16
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 6.8
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 6.9
1.4

Otherwise Unclassified Properties

Base Metal Price, % relative 40
70
Density, g/cm3 8.9
9.0
Embodied Carbon, kg CO2/kg material 5.0
12
Embodied Energy, MJ/kg 73
170
Embodied Water, L/kg 280
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 60
320
Resilience: Unit (Modulus of Resilience), kJ/m3 68
280
Stiffness to Weight: Axial, points 8.6
14
Stiffness to Weight: Bending, points 19
22
Strength to Weight: Axial, points 12
24
Strength to Weight: Bending, points 13
21
Thermal Diffusivity, mm2/s 8.4
2.6
Thermal Shock Resistance, points 13
21

Alloy Composition

Aluminum (Al), % 0 to 0.010
0
Carbon (C), % 0 to 0.030
0 to 0.010
Chromium (Cr), % 0
19 to 23
Copper (Cu), % 64.5 to 69.9
0
Iron (Fe), % 0.5 to 1.5
0 to 5.0
Lead (Pb), % 0 to 0.030
0
Manganese (Mn), % 0.6 to 1.2
0 to 0.75
Molybdenum (Mo), % 0
15 to 17
Nickel (Ni), % 29 to 31
49.5 to 63
Phosphorus (P), % 0 to 0.010
0 to 0.040
Silicon (Si), % 0 to 0.1
0 to 0.080
Sulfur (S), % 0 to 0.010
0 to 0.020
Titanium (Ti), % 0
0.020 to 0.25
Tungsten (W), % 0
3.0 to 4.4
Zinc (Zn), % 0 to 0.5
0