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EN AC-51500 Aluminum vs. EN 1.8550 Steel

EN AC-51500 aluminum belongs to the aluminum alloys classification, while EN 1.8550 steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, 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 EN AC-51500 aluminum and the bottom bar is EN 1.8550 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
300
Elastic (Young's, Tensile) Modulus, GPa 68
190
Elongation at Break, % 5.6
11
Fatigue Strength, MPa 120
470
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
73
Tensile Strength: Ultimate (UTS), MPa 280
1000
Tensile Strength: Yield (Proof), MPa 160
760

Thermal Properties

Latent Heat of Fusion, J/g 430
250
Maximum Temperature: Mechanical, °C 170
440
Melting Completion (Liquidus), °C 630
1450
Melting Onset (Solidus), °C 590
1410
Specific Heat Capacity, J/kg-K 910
480
Thermal Conductivity, W/m-K 120
40
Thermal Expansion, µm/m-K 23
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 26
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 88
8.8

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
3.4
Density, g/cm3 2.6
7.8
Embodied Carbon, kg CO2/kg material 9.0
1.7
Embodied Energy, MJ/kg 150
23
Embodied Water, L/kg 1150
67

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 13
100
Resilience: Unit (Modulus of Resilience), kJ/m3 190
1550
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 52
24
Strength to Weight: Axial, points 29
36
Strength to Weight: Bending, points 36
29
Thermal Diffusivity, mm2/s 49
11
Thermal Shock Resistance, points 13
29

Alloy Composition

Aluminum (Al), % 89.8 to 93.1
0.8 to 1.2
Carbon (C), % 0
0.3 to 0.37
Chromium (Cr), % 0
1.5 to 1.8
Copper (Cu), % 0 to 0.050
0
Iron (Fe), % 0 to 0.25
94.4 to 96.3
Magnesium (Mg), % 4.7 to 6.0
0
Manganese (Mn), % 0.4 to 0.8
0.4 to 0.7
Molybdenum (Mo), % 0
0.15 to 0.25
Nickel (Ni), % 0
0.85 to 1.2
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 1.8 to 2.6
0 to 0.4
Sulfur (S), % 0
0 to 0.035
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 0.070
0
Residuals, % 0 to 0.15
0