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7076 Aluminum vs. Nickel 690

7076 aluminum belongs to the aluminum alloys classification, while nickel 690 belongs to the nickel alloys. 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 7076 aluminum and the bottom bar is nickel 690.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
90
Elastic (Young's, Tensile) Modulus, GPa 70
200
Elongation at Break, % 6.2
3.4 to 34
Fatigue Strength, MPa 170
180 to 300
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 27
79
Shear Strength, MPa 310
420 to 570
Tensile Strength: Ultimate (UTS), MPa 530
640 to 990
Tensile Strength: Yield (Proof), MPa 460
250 to 760

Thermal Properties

Latent Heat of Fusion, J/g 380
320
Maximum Temperature: Mechanical, °C 170
1010
Melting Completion (Liquidus), °C 630
1380
Melting Onset (Solidus), °C 460
1340
Specific Heat Capacity, J/kg-K 860
470
Thermal Conductivity, W/m-K 140
14
Thermal Expansion, µm/m-K 24
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35
1.5
Electrical Conductivity: Equal Weight (Specific), % IACS 100
1.6

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
50
Density, g/cm3 3.0
8.3
Embodied Carbon, kg CO2/kg material 8.0
8.2
Embodied Energy, MJ/kg 150
120
Embodied Water, L/kg 1110
290

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31
31 to 170
Resilience: Unit (Modulus of Resilience), kJ/m3 1510
160 to 1440
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 45
24
Strength to Weight: Axial, points 49
21 to 33
Strength to Weight: Bending, points 48
20 to 27
Thermal Diffusivity, mm2/s 54
3.5
Thermal Shock Resistance, points 23
16 to 25

Alloy Composition

Aluminum (Al), % 86.9 to 91.2
0
Carbon (C), % 0
0 to 0.050
Chromium (Cr), % 0
27 to 31
Copper (Cu), % 0.3 to 1.0
0 to 0.5
Iron (Fe), % 0 to 0.6
7.0 to 11
Magnesium (Mg), % 1.2 to 2.0
0
Manganese (Mn), % 0.3 to 0.8
0 to 0.5
Nickel (Ni), % 0
58 to 66
Silicon (Si), % 0 to 0.4
0 to 0.5
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 7.0 to 8.0
0
Residuals, % 0 to 0.15
0