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4145 Aluminum vs. C79600 Nickel Silver

4145 aluminum belongs to the aluminum alloys classification, while C79600 nickel silver belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, 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 4145 aluminum and the bottom bar is C79600 nickel silver.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
110
Elongation at Break, % 2.2
15
Poisson's Ratio 0.33
0.3
Shear Modulus, GPa 28
43
Shear Strength, MPa 69
290
Tensile Strength: Ultimate (UTS), MPa 120
480
Tensile Strength: Yield (Proof), MPa 68
300

Thermal Properties

Latent Heat of Fusion, J/g 540
180
Maximum Temperature: Mechanical, °C 160
130
Melting Completion (Liquidus), °C 590
930
Melting Onset (Solidus), °C 520
880
Specific Heat Capacity, J/kg-K 880
390
Thermal Conductivity, W/m-K 100
36
Thermal Expansion, µm/m-K 21
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 26
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 84
8.0

Otherwise Unclassified Properties

Base Metal Price, % relative 10
25
Density, g/cm3 2.8
7.9
Embodied Carbon, kg CO2/kg material 7.6
3.5
Embodied Energy, MJ/kg 140
57
Embodied Water, L/kg 1040
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.3
63
Resilience: Unit (Modulus of Resilience), kJ/m3 31
400
Stiffness to Weight: Axial, points 14
7.8
Stiffness to Weight: Bending, points 50
20
Strength to Weight: Axial, points 12
17
Strength to Weight: Bending, points 19
17
Thermal Diffusivity, mm2/s 42
12
Thermal Shock Resistance, points 5.5
15

Alloy Composition

Aluminum (Al), % 83 to 87.4
0
Chromium (Cr), % 0 to 0.15
0
Copper (Cu), % 3.3 to 4.7
43.5 to 46.5
Iron (Fe), % 0 to 0.8
0
Lead (Pb), % 0
0.8 to 1.2
Magnesium (Mg), % 0 to 0.15
0
Manganese (Mn), % 0 to 0.15
1.5 to 2.5
Nickel (Ni), % 0
9.0 to 11
Silicon (Si), % 9.3 to 10.7
0
Zinc (Zn), % 0 to 0.2
38.3 to 45.2
Residuals, % 0
0 to 0.5