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2025 Aluminum vs. Nickel 601

2025 aluminum belongs to the aluminum alloys classification, while nickel 601 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 2025 aluminum and the bottom bar is nickel 601.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 72
200
Elongation at Break, % 15
10 to 38
Fatigue Strength, MPa 130
220 to 380
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
76
Shear Strength, MPa 240
440 to 530
Tensile Strength: Ultimate (UTS), MPa 400
660 to 890
Tensile Strength: Yield (Proof), MPa 260
290 to 800

Thermal Properties

Latent Heat of Fusion, J/g 400
320
Maximum Temperature: Mechanical, °C 190
1100
Melting Completion (Liquidus), °C 640
1410
Melting Onset (Solidus), °C 520
1360
Specific Heat Capacity, J/kg-K 870
470
Thermal Conductivity, W/m-K 150
11
Thermal Expansion, µm/m-K 23
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 10
49
Density, g/cm3 3.0
8.3
Embodied Carbon, kg CO2/kg material 7.9
8.0
Embodied Energy, MJ/kg 150
110
Embodied Water, L/kg 1130
280

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 55
86 to 200
Resilience: Unit (Modulus of Resilience), kJ/m3 450
210 to 1630
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 46
23
Strength to Weight: Axial, points 37
22 to 30
Strength to Weight: Bending, points 40
20 to 25
Thermal Diffusivity, mm2/s 58
2.8
Thermal Shock Resistance, points 18
17 to 23

Alloy Composition

Aluminum (Al), % 90.9 to 95.2
1.0 to 1.7
Carbon (C), % 0
0 to 0.1
Chromium (Cr), % 0 to 0.1
21 to 25
Copper (Cu), % 3.9 to 5.0
0 to 1.0
Iron (Fe), % 0 to 1.0
7.7 to 20
Magnesium (Mg), % 0 to 0.050
0
Manganese (Mn), % 0.4 to 1.2
0 to 1.0
Nickel (Ni), % 0
58 to 63
Silicon (Si), % 0.5 to 1.2
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