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6066 Aluminum vs. Nickel 684

6066 aluminum belongs to the aluminum alloys classification, while nickel 684 belongs to the nickel alloys. There are 26 material properties with values for both materials. Properties with values for just one material (6, 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 6066 aluminum and the bottom bar is nickel 684.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
200
Elongation at Break, % 7.8 to 17
11
Fatigue Strength, MPa 94 to 130
390
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
76
Shear Strength, MPa 95 to 240
710
Tensile Strength: Ultimate (UTS), MPa 160 to 400
1190
Tensile Strength: Yield (Proof), MPa 93 to 360
800

Thermal Properties

Latent Heat of Fusion, J/g 410
320
Maximum Temperature: Mechanical, °C 170
1000
Melting Completion (Liquidus), °C 650
1370
Melting Onset (Solidus), °C 560
1320
Specific Heat Capacity, J/kg-K 890
470
Thermal Expansion, µm/m-K 23
13

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
75
Density, g/cm3 2.8
8.3
Embodied Carbon, kg CO2/kg material 8.3
10
Embodied Energy, MJ/kg 150
140
Embodied Water, L/kg 1160
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 23 to 52
120
Resilience: Unit (Modulus of Resilience), kJ/m3 61 to 920
1610
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 49
23
Strength to Weight: Axial, points 16 to 39
40
Strength to Weight: Bending, points 23 to 43
30
Thermal Shock Resistance, points 6.9 to 17
34

Alloy Composition

Aluminum (Al), % 93 to 97
2.5 to 3.3
Boron (B), % 0
0.0030 to 0.010
Carbon (C), % 0
0 to 0.15
Chromium (Cr), % 0 to 0.4
15 to 20
Cobalt (Co), % 0
13 to 20
Copper (Cu), % 0.7 to 1.2
0 to 0.15
Iron (Fe), % 0 to 0.5
0 to 4.0
Magnesium (Mg), % 0.8 to 1.4
0
Manganese (Mn), % 0.6 to 1.1
0 to 0.75
Molybdenum (Mo), % 0
3.0 to 5.0
Nickel (Ni), % 0
42.7 to 64
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 0.9 to 1.8
0 to 0.75
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0 to 0.2
2.5 to 3.3
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0 to 0.15
0