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6061 Aluminum vs. Nickel 690

6061 aluminum belongs to the aluminum alloys classification, while nickel 690 belongs to the nickel alloys. There are 30 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 6061 aluminum and the bottom bar is nickel 690.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
200
Elongation at Break, % 3.4 to 20
3.4 to 34
Fatigue Strength, MPa 58 to 110
180 to 300
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
79
Shear Strength, MPa 84 to 210
420 to 570
Tensile Strength: Ultimate (UTS), MPa 130 to 410
640 to 990
Tensile Strength: Yield (Proof), MPa 76 to 370
250 to 760

Thermal Properties

Latent Heat of Fusion, J/g 400
320
Maximum Temperature: Mechanical, °C 170
1010
Melting Completion (Liquidus), °C 650
1380
Melting Onset (Solidus), °C 580
1340
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 170
14
Thermal Expansion, µm/m-K 24
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 43
1.5
Electrical Conductivity: Equal Weight (Specific), % IACS 140
1.6

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
50
Density, g/cm3 2.7
8.3
Embodied Carbon, kg CO2/kg material 8.3
8.2
Embodied Energy, MJ/kg 150
120
Embodied Water, L/kg 1180
290

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.8 to 81
31 to 170
Resilience: Unit (Modulus of Resilience), kJ/m3 42 to 1000
160 to 1440
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
24
Strength to Weight: Axial, points 13 to 42
21 to 33
Strength to Weight: Bending, points 21 to 45
20 to 27
Thermal Diffusivity, mm2/s 68
3.5
Thermal Shock Resistance, points 5.7 to 18
16 to 25

Alloy Composition

Aluminum (Al), % 95.9 to 98.6
0
Carbon (C), % 0
0 to 0.050
Chromium (Cr), % 0.040 to 0.35
27 to 31
Copper (Cu), % 0.15 to 0.4
0 to 0.5
Iron (Fe), % 0 to 0.7
7.0 to 11
Magnesium (Mg), % 0.8 to 1.2
0
Manganese (Mn), % 0 to 0.15
0 to 0.5
Nickel (Ni), % 0
58 to 66
Silicon (Si), % 0.4 to 0.8
0 to 0.5
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0 to 0.15
0

Comparable Variants