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Nickel 685 vs. 6025 Aluminum

Nickel 685 belongs to the nickel alloys classification, while 6025 aluminum belongs to the aluminum alloys. There are 28 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 nickel 685 and the bottom bar is 6025 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
70
Elongation at Break, % 17
2.8 to 10
Fatigue Strength, MPa 470
67 to 110
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 77
26
Shear Strength, MPa 770
110 to 140
Tensile Strength: Ultimate (UTS), MPa 1250
190 to 240
Tensile Strength: Yield (Proof), MPa 850
68 to 210

Thermal Properties

Latent Heat of Fusion, J/g 320
410
Maximum Temperature: Mechanical, °C 1000
160
Melting Completion (Liquidus), °C 1380
650
Melting Onset (Solidus), °C 1330
550
Specific Heat Capacity, J/kg-K 460
900
Thermal Conductivity, W/m-K 13
130
Thermal Expansion, µm/m-K 12
23

Otherwise Unclassified Properties

Base Metal Price, % relative 75
9.5
Density, g/cm3 8.4
2.8
Embodied Carbon, kg CO2/kg material 10
8.5
Embodied Energy, MJ/kg 140
150
Embodied Water, L/kg 340
1160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
6.0 to 15
Resilience: Unit (Modulus of Resilience), kJ/m3 1820
33 to 310
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
50
Strength to Weight: Axial, points 42
19 to 24
Strength to Weight: Bending, points 31
26 to 31
Thermal Diffusivity, mm2/s 3.3
54
Thermal Shock Resistance, points 37
8.2 to 10

Alloy Composition

Aluminum (Al), % 1.2 to 1.6
91.7 to 96.3
Boron (B), % 0.0030 to 0.010
0
Carbon (C), % 0.030 to 0.1
0
Chromium (Cr), % 18 to 21
0 to 0.2
Cobalt (Co), % 12 to 15
0
Copper (Cu), % 0 to 0.5
0.2 to 0.7
Iron (Fe), % 0 to 2.0
0 to 0.7
Magnesium (Mg), % 0
2.1 to 3.0
Manganese (Mn), % 0 to 1.0
0.6 to 1.4
Molybdenum (Mo), % 3.5 to 5.0
0
Nickel (Ni), % 49.6 to 62.5
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 0.75
0.8 to 1.5
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 2.8 to 3.3
0 to 0.2
Zinc (Zn), % 0.020 to 0.12
0 to 0.5
Residuals, % 0
0 to 0.15