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5251 Aluminum vs. EN 2.4856 Nickel

5251 aluminum belongs to the aluminum alloys classification, while EN 2.4856 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 5251 aluminum and the bottom bar is EN 2.4856 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 44 to 79
210
Elastic (Young's, Tensile) Modulus, GPa 68
200
Elongation at Break, % 2.0 to 19
28
Fatigue Strength, MPa 59 to 110
280
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
79
Shear Strength, MPa 110 to 160
570
Tensile Strength: Ultimate (UTS), MPa 180 to 280
880
Tensile Strength: Yield (Proof), MPa 67 to 250
430

Thermal Properties

Latent Heat of Fusion, J/g 400
330
Maximum Temperature: Mechanical, °C 180
1000
Melting Completion (Liquidus), °C 650
1480
Melting Onset (Solidus), °C 610
1430
Specific Heat Capacity, J/kg-K 900
440
Thermal Conductivity, W/m-K 150
10
Thermal Expansion, µm/m-K 24
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 37
1.3
Electrical Conductivity: Equal Weight (Specific), % IACS 120
1.4

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
80
Density, g/cm3 2.7
8.6
Embodied Carbon, kg CO2/kg material 8.5
14
Embodied Energy, MJ/kg 150
190
Embodied Water, L/kg 1180
290

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.4 to 27
200
Resilience: Unit (Modulus of Resilience), kJ/m3 33 to 450
440
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
23
Strength to Weight: Axial, points 18 to 29
28
Strength to Weight: Bending, points 26 to 35
24
Thermal Diffusivity, mm2/s 61
2.7
Thermal Shock Resistance, points 7.9 to 13
29

Alloy Composition

Aluminum (Al), % 95.5 to 98.2
0 to 0.4
Carbon (C), % 0
0.030 to 0.1
Chromium (Cr), % 0 to 0.15
20 to 23
Cobalt (Co), % 0
0 to 1.0
Copper (Cu), % 0 to 0.15
0 to 0.5
Iron (Fe), % 0 to 0.5
0 to 5.0
Magnesium (Mg), % 1.7 to 2.4
0
Manganese (Mn), % 0.1 to 0.5
0 to 0.5
Molybdenum (Mo), % 0
8.0 to 10
Nickel (Ni), % 0
58 to 68.8
Niobium (Nb), % 0
3.2 to 4.2
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0 to 0.4
0 to 0.5
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0 to 0.15
0 to 0.4
Zinc (Zn), % 0 to 0.15
0
Residuals, % 0 to 0.15
0