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2025 Aluminum vs. Nickel 693

2025 aluminum belongs to the aluminum alloys classification, while nickel 693 belongs to the nickel alloys. There are 28 material properties with values for both materials. Properties with values for just one material (3, 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 2025 aluminum and the bottom bar is nickel 693.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 72
200
Elongation at Break, % 15
34
Fatigue Strength, MPa 130
230
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
76
Shear Strength, MPa 240
440
Tensile Strength: Ultimate (UTS), MPa 400
660
Tensile Strength: Yield (Proof), MPa 260
310

Thermal Properties

Latent Heat of Fusion, J/g 400
330
Maximum Temperature: Mechanical, °C 190
1010
Melting Completion (Liquidus), °C 640
1350
Melting Onset (Solidus), °C 520
1310
Specific Heat Capacity, J/kg-K 870
480
Thermal Conductivity, W/m-K 150
9.1
Thermal Expansion, µm/m-K 23
13

Otherwise Unclassified Properties

Base Metal Price, % relative 10
60
Density, g/cm3 3.0
8.1
Embodied Carbon, kg CO2/kg material 7.9
9.9
Embodied Energy, MJ/kg 150
140
Embodied Water, L/kg 1130
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 55
190
Resilience: Unit (Modulus of Resilience), kJ/m3 450
250
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 46
24
Strength to Weight: Axial, points 37
23
Strength to Weight: Bending, points 40
21
Thermal Diffusivity, mm2/s 58
2.3
Thermal Shock Resistance, points 18
19

Alloy Composition

Aluminum (Al), % 90.9 to 95.2
2.5 to 4.0
Carbon (C), % 0
0 to 0.15
Chromium (Cr), % 0 to 0.1
27 to 31
Copper (Cu), % 3.9 to 5.0
0 to 0.5
Iron (Fe), % 0 to 1.0
2.5 to 6.0
Magnesium (Mg), % 0 to 0.050
0
Manganese (Mn), % 0.4 to 1.2
0 to 1.0
Nickel (Ni), % 0
53.3 to 67.5
Niobium (Nb), % 0
0.5 to 2.5
Silicon (Si), % 0.5 to 1.2
0 to 0.5
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0 to 0.15
0 to 1.0
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0 to 0.15
0