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Nickel 690 vs. CC381H Copper-nickel

Nickel 690 belongs to the nickel alloys classification, while CC381H copper-nickel belongs to the copper alloys. They have a modest 32% of their average alloy composition in common, which, by itself, doesn't mean much. 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 nickel 690 and the bottom bar is CC381H copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 90
91
Elastic (Young's, Tensile) Modulus, GPa 200
140
Elongation at Break, % 3.4 to 34
20
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 79
52
Tensile Strength: Ultimate (UTS), MPa 640 to 990
380
Tensile Strength: Yield (Proof), MPa 250 to 760
140

Thermal Properties

Latent Heat of Fusion, J/g 320
240
Maximum Temperature: Mechanical, °C 1010
260
Melting Completion (Liquidus), °C 1380
1180
Melting Onset (Solidus), °C 1340
1120
Specific Heat Capacity, J/kg-K 470
410
Thermal Conductivity, W/m-K 14
30
Thermal Expansion, µm/m-K 14
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.5
6.8
Electrical Conductivity: Equal Weight (Specific), % IACS 1.6
6.9

Otherwise Unclassified Properties

Base Metal Price, % relative 50
40
Density, g/cm3 8.3
8.9
Embodied Carbon, kg CO2/kg material 8.2
5.0
Embodied Energy, MJ/kg 120
73
Embodied Water, L/kg 290
280

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31 to 170
60
Resilience: Unit (Modulus of Resilience), kJ/m3 160 to 1440
68
Stiffness to Weight: Axial, points 13
8.6
Stiffness to Weight: Bending, points 24
19
Strength to Weight: Axial, points 21 to 33
12
Strength to Weight: Bending, points 20 to 27
13
Thermal Diffusivity, mm2/s 3.5
8.4
Thermal Shock Resistance, points 16 to 25
13

Alloy Composition

Aluminum (Al), % 0
0 to 0.010
Carbon (C), % 0 to 0.050
0 to 0.030
Chromium (Cr), % 27 to 31
0
Copper (Cu), % 0 to 0.5
64.5 to 69.9
Iron (Fe), % 7.0 to 11
0.5 to 1.5
Lead (Pb), % 0
0 to 0.030
Manganese (Mn), % 0 to 0.5
0.6 to 1.2
Nickel (Ni), % 58 to 66
29 to 31
Phosphorus (P), % 0
0 to 0.010
Silicon (Si), % 0 to 0.5
0 to 0.1
Sulfur (S), % 0 to 0.015
0 to 0.010
Zinc (Zn), % 0
0 to 0.5