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2218 Aluminum vs. EN 2.4851 Nickel

2218 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 2218 aluminum and the bottom bar is EN 2.4851 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 95 to 110
190
Elastic (Young's, Tensile) Modulus, GPa 73
200
Elongation at Break, % 6.8 to 10
34
Fatigue Strength, MPa 110
170
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
76
Shear Strength, MPa 210 to 250
430
Tensile Strength: Ultimate (UTS), MPa 330 to 430
650
Tensile Strength: Yield (Proof), MPa 260 to 310
230

Thermal Properties

Latent Heat of Fusion, J/g 390
320
Maximum Temperature: Mechanical, °C 220
1200
Melting Completion (Liquidus), °C 640
1360
Melting Onset (Solidus), °C 510
1310
Specific Heat Capacity, J/kg-K 870
470
Thermal Conductivity, W/m-K 140
11
Thermal Expansion, µm/m-K 22
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 37
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 110
1.6

Otherwise Unclassified Properties

Base Metal Price, % relative 11
49
Density, g/cm3 3.1
8.2
Embodied Carbon, kg CO2/kg material 8.2
8.1
Embodied Energy, MJ/kg 150
120
Embodied Water, L/kg 1130
280

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 27 to 31
170
Resilience: Unit (Modulus of Resilience), kJ/m3 450 to 650
130
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 45
23
Strength to Weight: Axial, points 30 to 39
22
Strength to Weight: Bending, points 34 to 41
20
Thermal Diffusivity, mm2/s 52
2.9
Thermal Shock Resistance, points 15 to 19
17

Alloy Composition

Aluminum (Al), % 88.8 to 93.6
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), % 3.5 to 4.5
0 to 0.5
Iron (Fe), % 0 to 1.0
7.7 to 18
Magnesium (Mg), % 1.2 to 1.8
0
Manganese (Mn), % 0 to 0.2
0 to 1.0
Nickel (Ni), % 1.7 to 2.3
58 to 63
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0 to 0.9
0 to 0.5
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0
0 to 0.5
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0 to 0.15
0