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2025 Aluminum vs. EN 2.4851 Nickel

2025 aluminum belongs to the aluminum alloys classification, while EN 2.4851 nickel 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 2025 aluminum and the bottom bar is EN 2.4851 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 110
190
Elastic (Young's, Tensile) Modulus, GPa 72
200
Elongation at Break, % 15
34
Fatigue Strength, MPa 130
170
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
76
Shear Strength, MPa 240
430
Tensile Strength: Ultimate (UTS), MPa 400
650
Tensile Strength: Yield (Proof), MPa 260
230

Thermal Properties

Latent Heat of Fusion, J/g 400
320
Maximum Temperature: Mechanical, °C 190
1200
Melting Completion (Liquidus), °C 640
1360
Melting Onset (Solidus), °C 520
1310
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
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 120
1.6

Otherwise Unclassified Properties

Base Metal Price, % relative 10
49
Density, g/cm3 3.0
8.2
Embodied Carbon, kg CO2/kg material 7.9
8.1
Embodied Energy, MJ/kg 150
120
Embodied Water, L/kg 1130
280

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 55
170
Resilience: Unit (Modulus of Resilience), kJ/m3 450
130
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 46
23
Strength to Weight: Axial, points 37
22
Strength to Weight: Bending, points 40
20
Thermal Diffusivity, mm2/s 58
2.9
Thermal Shock Resistance, points 18
17

Alloy Composition

Aluminum (Al), % 90.9 to 95.2
1.0 to 1.7
Boron (B), % 0
0 to 0.0060
Carbon (C), % 0
0.030 to 0.1
Chromium (Cr), % 0 to 0.1
21 to 25
Copper (Cu), % 3.9 to 5.0
0 to 0.5
Iron (Fe), % 0 to 1.0
7.7 to 18
Magnesium (Mg), % 0 to 0.050
0
Manganese (Mn), % 0.4 to 1.2
0 to 1.0
Nickel (Ni), % 0
58 to 63
Phosphorus (P), % 0
0 to 0.020
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 to 0.5
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0 to 0.15
0