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7129 Aluminum vs. Nickel 690

7129 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 (1, 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 7129 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, % 9.0 to 9.1
3.4 to 34
Fatigue Strength, MPa 150 to 190
180 to 300
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
79
Shear Strength, MPa 250 to 260
420 to 570
Tensile Strength: Ultimate (UTS), MPa 430
640 to 990
Tensile Strength: Yield (Proof), MPa 380 to 390
250 to 760

Thermal Properties

Latent Heat of Fusion, J/g 380
320
Maximum Temperature: Mechanical, °C 180
1010
Melting Completion (Liquidus), °C 630
1380
Melting Onset (Solidus), °C 510
1340
Specific Heat Capacity, J/kg-K 880
470
Thermal Conductivity, W/m-K 150
14
Thermal Expansion, µm/m-K 24
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
1.5
Electrical Conductivity: Equal Weight (Specific), % IACS 120
1.6

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
50
Density, g/cm3 2.9
8.3
Embodied Carbon, kg CO2/kg material 8.3
8.2
Embodied Energy, MJ/kg 150
120
Embodied Water, L/kg 1150
290

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 37 to 38
31 to 170
Resilience: Unit (Modulus of Resilience), kJ/m3 1050 to 1090
160 to 1440
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 47
24
Strength to Weight: Axial, points 41
21 to 33
Strength to Weight: Bending, points 43 to 44
20 to 27
Thermal Diffusivity, mm2/s 58
3.5
Thermal Shock Resistance, points 19
16 to 25

Alloy Composition

Aluminum (Al), % 91 to 94
0
Carbon (C), % 0
0 to 0.050
Chromium (Cr), % 0 to 0.1
27 to 31
Copper (Cu), % 0.5 to 0.9
0 to 0.5
Gallium (Ga), % 0 to 0.030
0
Iron (Fe), % 0 to 0.3
7.0 to 11
Magnesium (Mg), % 1.3 to 2.0
0
Manganese (Mn), % 0 to 0.1
0 to 0.5
Nickel (Ni), % 0
58 to 66
Silicon (Si), % 0 to 0.15
0 to 0.5
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0 to 0.050
0
Vanadium (V), % 0 to 0.050
0
Zinc (Zn), % 4.2 to 5.2
0
Residuals, % 0 to 0.15
0