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2018 Aluminum vs. C78200 Nickel Silver

2018 aluminum belongs to the aluminum alloys classification, while C78200 nickel silver belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is 2018 aluminum and the bottom bar is C78200 nickel silver.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
110
Elongation at Break, % 9.6
3.0 to 40
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 27
43
Shear Strength, MPa 270
280 to 400
Tensile Strength: Ultimate (UTS), MPa 420
370 to 630
Tensile Strength: Yield (Proof), MPa 310
170 to 570

Thermal Properties

Latent Heat of Fusion, J/g 390
190
Maximum Temperature: Mechanical, °C 220
160
Melting Completion (Liquidus), °C 640
1000
Melting Onset (Solidus), °C 510
970
Specific Heat Capacity, J/kg-K 870
390
Thermal Conductivity, W/m-K 150
48
Thermal Expansion, µm/m-K 22
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
11
Electrical Conductivity: Equal Weight (Specific), % IACS 120
12

Otherwise Unclassified Properties

Base Metal Price, % relative 11
28
Density, g/cm3 3.1
8.4
Embodied Carbon, kg CO2/kg material 8.1
3.3
Embodied Energy, MJ/kg 150
52
Embodied Water, L/kg 1130
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 37
18 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 670
130 to 1440
Stiffness to Weight: Axial, points 13
7.4
Stiffness to Weight: Bending, points 45
19
Strength to Weight: Axial, points 38
12 to 21
Strength to Weight: Bending, points 41
14 to 19
Thermal Diffusivity, mm2/s 57
15
Thermal Shock Resistance, points 19
12 to 21

Alloy Composition

Aluminum (Al), % 89.7 to 94.4
0
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 3.5 to 4.5
63 to 67
Iron (Fe), % 0 to 1.0
0 to 0.35
Lead (Pb), % 0
1.5 to 2.5
Magnesium (Mg), % 0.45 to 0.9
0
Manganese (Mn), % 0 to 0.2
0 to 0.5
Nickel (Ni), % 1.7 to 2.3
7.0 to 9.0
Silicon (Si), % 0 to 0.9
0
Zinc (Zn), % 0 to 0.25
20.2 to 28.5
Residuals, % 0
0 to 0.5