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4104 Aluminum vs. Nickel 685

4104 aluminum belongs to the aluminum alloys classification, while nickel 685 belongs to the nickel alloys. There are 28 material properties with values for both materials. Properties with values for just one material (5, 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 4104 aluminum and the bottom bar is nickel 685.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
200
Elongation at Break, % 2.4
17
Fatigue Strength, MPa 42
470
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
77
Shear Strength, MPa 63
770
Tensile Strength: Ultimate (UTS), MPa 110
1250
Tensile Strength: Yield (Proof), MPa 60
850

Thermal Properties

Latent Heat of Fusion, J/g 540
320
Maximum Temperature: Mechanical, °C 160
1000
Melting Completion (Liquidus), °C 600
1380
Melting Onset (Solidus), °C 560
1330
Specific Heat Capacity, J/kg-K 900
460
Thermal Conductivity, W/m-K 130
13
Thermal Expansion, µm/m-K 22
12

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
75
Density, g/cm3 2.6
8.4
Embodied Carbon, kg CO2/kg material 8.0
10
Embodied Energy, MJ/kg 150
140
Embodied Water, L/kg 1080
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.3
190
Resilience: Unit (Modulus of Resilience), kJ/m3 25
1820
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 54
23
Strength to Weight: Axial, points 12
42
Strength to Weight: Bending, points 20
31
Thermal Diffusivity, mm2/s 58
3.3
Thermal Shock Resistance, points 5.1
37

Alloy Composition

Aluminum (Al), % 85.8 to 90
1.2 to 1.6
Bismuth (Bi), % 0.020 to 0.2
0
Boron (B), % 0
0.0030 to 0.010
Carbon (C), % 0
0.030 to 0.1
Chromium (Cr), % 0
18 to 21
Cobalt (Co), % 0
12 to 15
Copper (Cu), % 0 to 0.25
0 to 0.5
Iron (Fe), % 0 to 0.8
0 to 2.0
Magnesium (Mg), % 1.0 to 2.0
0
Manganese (Mn), % 0 to 0.1
0 to 1.0
Molybdenum (Mo), % 0
3.5 to 5.0
Nickel (Ni), % 0
49.6 to 62.5
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 9.0 to 10.5
0 to 0.75
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0
2.8 to 3.3
Zinc (Zn), % 0 to 0.2
0.020 to 0.12
Residuals, % 0 to 0.15
0