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2618 Aluminum vs. C74400 Nickel Silver

2618 aluminum belongs to the aluminum alloys classification, while C74400 nickel silver belongs to the copper 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. 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 2618 aluminum and the bottom bar is C74400 nickel silver.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
110
Elongation at Break, % 5.8
43
Poisson's Ratio 0.33
0.31
Shear Modulus, GPa 27
39
Shear Strength, MPa 260
240
Tensile Strength: Ultimate (UTS), MPa 420
350
Tensile Strength: Yield (Proof), MPa 350
120

Thermal Properties

Latent Heat of Fusion, J/g 390
180
Maximum Temperature: Mechanical, °C 210
140
Melting Completion (Liquidus), °C 640
930
Melting Onset (Solidus), °C 550
910
Specific Heat Capacity, J/kg-K 880
390
Thermal Conductivity, W/m-K 160
120
Thermal Expansion, µm/m-K 22
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 37
26
Electrical Conductivity: Equal Weight (Specific), % IACS 110
29

Otherwise Unclassified Properties

Base Metal Price, % relative 11
25
Density, g/cm3 2.9
8.2
Embodied Carbon, kg CO2/kg material 8.3
2.9
Embodied Energy, MJ/kg 150
48
Embodied Water, L/kg 1150
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 23
120
Resilience: Unit (Modulus of Resilience), kJ/m3 850
63
Stiffness to Weight: Axial, points 13
7.4
Stiffness to Weight: Bending, points 47
19
Strength to Weight: Axial, points 40
12
Strength to Weight: Bending, points 42
14
Thermal Diffusivity, mm2/s 62
37
Thermal Shock Resistance, points 19
12

Alloy Composition

Aluminum (Al), % 92.4 to 94.9
0
Copper (Cu), % 1.9 to 2.7
62 to 66
Iron (Fe), % 0.9 to 1.3
0 to 0.050
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 1.3 to 1.8
0
Nickel (Ni), % 0.9 to 1.2
2.0 to 4.0
Silicon (Si), % 0.1 to 0.25
0
Titanium (Ti), % 0.040 to 0.1
0
Zinc (Zn), % 0 to 0.1
29.6 to 36
Residuals, % 0
0 to 0.3