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2618 Aluminum vs. EN 1.1140 Steel

2618 aluminum belongs to the aluminum alloys classification, while EN 1.1140 steel belongs to the iron 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 2618 aluminum and the bottom bar is EN 1.1140 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 120
130
Elastic (Young's, Tensile) Modulus, GPa 71
190
Elongation at Break, % 5.8
28
Fatigue Strength, MPa 110
170
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
73
Shear Strength, MPa 260
280
Tensile Strength: Ultimate (UTS), MPa 420
430
Tensile Strength: Yield (Proof), MPa 350
230

Thermal Properties

Latent Heat of Fusion, J/g 390
250
Maximum Temperature: Mechanical, °C 210
400
Melting Completion (Liquidus), °C 640
1460
Melting Onset (Solidus), °C 550
1420
Specific Heat Capacity, J/kg-K 880
470
Thermal Conductivity, W/m-K 160
51
Thermal Expansion, µm/m-K 22
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 37
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 110
8.0

Otherwise Unclassified Properties

Base Metal Price, % relative 11
1.8
Density, g/cm3 2.9
7.8
Embodied Carbon, kg CO2/kg material 8.3
1.4
Embodied Energy, MJ/kg 150
18
Embodied Water, L/kg 1150
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 23
100
Resilience: Unit (Modulus of Resilience), kJ/m3 850
140
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 47
24
Strength to Weight: Axial, points 40
15
Strength to Weight: Bending, points 42
16
Thermal Diffusivity, mm2/s 62
14
Thermal Shock Resistance, points 19
14

Alloy Composition

Aluminum (Al), % 92.4 to 94.9
0
Carbon (C), % 0
0.12 to 0.18
Copper (Cu), % 1.9 to 2.7
0
Iron (Fe), % 0.9 to 1.3
98.7 to 99.56
Magnesium (Mg), % 1.3 to 1.8
0
Manganese (Mn), % 0
0.3 to 0.6
Nickel (Ni), % 0.9 to 1.2
0
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0.1 to 0.25
0 to 0.4
Sulfur (S), % 0
0.020 to 0.040
Titanium (Ti), % 0.040 to 0.1
0
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.15
0