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2618 Aluminum vs. EN 1.5525 Steel

2618 aluminum belongs to the aluminum alloys classification, while EN 1.5525 steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (1, 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 2618 aluminum and the bottom bar is EN 1.5525 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 120
130 to 180
Elastic (Young's, Tensile) Modulus, GPa 71
190
Elongation at Break, % 5.8
11 to 21
Fatigue Strength, MPa 110
210 to 310
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
73
Shear Strength, MPa 260
310 to 350
Tensile Strength: Ultimate (UTS), MPa 420
440 to 1440
Tensile Strength: Yield (Proof), MPa 350
300 to 490

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
50
Thermal Expansion, µm/m-K 22
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 37
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 110
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 11
1.9
Density, g/cm3 2.9
7.8
Embodied Carbon, kg CO2/kg material 8.3
1.4
Embodied Energy, MJ/kg 150
19
Embodied Water, L/kg 1150
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 23
44 to 240
Resilience: Unit (Modulus of Resilience), kJ/m3 850
240 to 640
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 47
24
Strength to Weight: Axial, points 40
16 to 51
Strength to Weight: Bending, points 42
16 to 36
Thermal Diffusivity, mm2/s 62
13
Thermal Shock Resistance, points 19
13 to 42

Alloy Composition

Aluminum (Al), % 92.4 to 94.9
0
Boron (B), % 0
0.00080 to 0.0050
Carbon (C), % 0
0.18 to 0.23
Chromium (Cr), % 0
0 to 0.3
Copper (Cu), % 1.9 to 2.7
0 to 0.25
Iron (Fe), % 0.9 to 1.3
97.7 to 98.9
Magnesium (Mg), % 1.3 to 1.8
0
Manganese (Mn), % 0
0.9 to 1.2
Nickel (Ni), % 0.9 to 1.2
0
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0.1 to 0.25
0 to 0.3
Sulfur (S), % 0
0 to 0.025
Titanium (Ti), % 0.040 to 0.1
0
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.15
0