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EN AC-51500 Aluminum vs. EN 1.7709 Steel

EN AC-51500 aluminum belongs to the aluminum alloys classification, while EN 1.7709 steel belongs to the iron alloys. There are 25 material properties with values for both materials. Properties with values for just one material (6, 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 1.7709 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
200 to 230
Elastic (Young's, Tensile) Modulus, GPa 68
190
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
73
Tensile Strength: Ultimate (UTS), MPa 280
650 to 780

Thermal Properties

Latent Heat of Fusion, J/g 430
250
Maximum Temperature: Mechanical, °C 170
440
Melting Completion (Liquidus), °C 630
1470
Melting Onset (Solidus), °C 590
1420
Specific Heat Capacity, J/kg-K 910
470
Thermal Conductivity, W/m-K 120
33
Thermal Expansion, µm/m-K 23
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 26
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 88
8.6

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
2.3
Embodied Energy, MJ/kg 150
32
Embodied Water, L/kg 1150
56

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 52
24
Strength to Weight: Axial, points 29
23 to 27
Strength to Weight: Bending, points 36
21 to 24
Thermal Diffusivity, mm2/s 49
8.9
Thermal Shock Resistance, points 13
22 to 26

Alloy Composition

Aluminum (Al), % 89.8 to 93.1
0 to 0.030
Carbon (C), % 0
0.17 to 0.25
Chromium (Cr), % 0
1.2 to 1.5
Copper (Cu), % 0 to 0.050
0
Iron (Fe), % 0 to 0.25
95.2 to 97.5
Magnesium (Mg), % 4.7 to 6.0
0
Manganese (Mn), % 0.4 to 0.8
0.4 to 0.8
Molybdenum (Mo), % 0
0.55 to 0.8
Nickel (Ni), % 0
0 to 0.6
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 1.8 to 2.6
0 to 0.4
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.25
0
Vanadium (V), % 0
0.2 to 0.35
Zinc (Zn), % 0 to 0.070
0
Residuals, % 0 to 0.15
0