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Nickel 908 vs. C71000 Copper-nickel

Nickel 908 belongs to the nickel alloys classification, while C71000 copper-nickel belongs to the copper alloys. They have a modest 23% of their average alloy composition in common, which, by itself, doesn't mean much. There are 22 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is nickel 908 and the bottom bar is C71000 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
130
Poisson's Ratio 0.3
0.33
Shear Modulus, GPa 70
49
Tensile Strength: Ultimate (UTS), MPa 1340
320 to 560

Thermal Properties

Latent Heat of Fusion, J/g 290
230
Maximum Temperature: Mechanical, °C 920
240
Melting Completion (Liquidus), °C 1430
1200
Melting Onset (Solidus), °C 1380
1150
Specific Heat Capacity, J/kg-K 460
400
Thermal Conductivity, W/m-K 11
43
Thermal Expansion, µm/m-K 8.6
15

Otherwise Unclassified Properties

Base Metal Price, % relative 50
37
Density, g/cm3 8.3
8.9
Embodied Carbon, kg CO2/kg material 9.3
4.3
Embodied Energy, MJ/kg 140
63
Embodied Water, L/kg 170
290

Common Calculations

Stiffness to Weight: Axial, points 12
8.2
Stiffness to Weight: Bending, points 23
19
Strength to Weight: Axial, points 45
10 to 18
Strength to Weight: Bending, points 33
12 to 17
Thermal Diffusivity, mm2/s 2.9
12
Thermal Shock Resistance, points 61
12 to 20

Alloy Composition

Aluminum (Al), % 0.75 to 1.3
0
Boron (B), % 0 to 0.012
0
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 3.8 to 4.5
0
Cobalt (Co), % 0 to 0.5
0
Copper (Cu), % 0 to 0.5
73.5 to 80.5
Iron (Fe), % 35.6 to 44.6
0.5 to 1.0
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 0 to 1.0
0 to 1.0
Nickel (Ni), % 47 to 51
19 to 23
Niobium (Nb), % 2.7 to 3.3
0
Phosphorus (P), % 0 to 0.015
0
Silicon (Si), % 0 to 0.5
0
Sulfur (S), % 0 to 0.0050
0
Titanium (Ti), % 1.2 to 1.8
0
Zinc (Zn), % 0
0 to 1.0
Residuals, % 0
0 to 0.5