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EN AC-51200 Aluminum vs. SAE-AISI L6 Steel

EN AC-51200 aluminum belongs to the aluminum alloys classification, while SAE-AISI L6 steel belongs to the iron alloys. There are 23 material properties with values for both materials. Properties with values for just one material (7, 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-51200 aluminum and the bottom bar is SAE-AISI L6 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 67
190
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 25
72
Tensile Strength: Ultimate (UTS), MPa 220
670 to 2090

Thermal Properties

Latent Heat of Fusion, J/g 410
250
Melting Completion (Liquidus), °C 640
1450
Melting Onset (Solidus), °C 570
1410
Specific Heat Capacity, J/kg-K 910
470
Thermal Conductivity, W/m-K 92
42
Thermal Expansion, µm/m-K 23
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 22
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 74
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
3.6
Density, g/cm3 2.6
7.8
Embodied Carbon, kg CO2/kg material 9.6
2.0
Embodied Energy, MJ/kg 150
28
Embodied Water, L/kg 1150
54

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 51
24
Strength to Weight: Axial, points 24
24 to 74
Strength to Weight: Bending, points 31
22 to 46
Thermal Diffusivity, mm2/s 39
11
Thermal Shock Resistance, points 10
22 to 70

Alloy Composition

Aluminum (Al), % 84.5 to 92
0
Carbon (C), % 0
0.65 to 0.75
Chromium (Cr), % 0
0.6 to 1.2
Copper (Cu), % 0 to 0.1
0 to 0.25
Iron (Fe), % 0 to 1.0
93.6 to 97.3
Lead (Pb), % 0 to 0.1
0
Magnesium (Mg), % 8.0 to 10.5
0
Manganese (Mn), % 0 to 0.55
0.25 to 0.8
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0 to 0.1
1.3 to 2.0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 2.5
0 to 0.5
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 0 to 0.1
0
Titanium (Ti), % 0 to 0.2
0
Vanadium (V), % 0
0 to 0.3
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0 to 0.15
0