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518.0 Aluminum vs. SAE-AISI T2 Steel

518.0 aluminum belongs to the aluminum alloys classification, while SAE-AISI T2 steel belongs to the iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (11, 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 518.0 aluminum and the bottom bar is SAE-AISI T2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 67
200
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 25
79
Tensile Strength: Ultimate (UTS), MPa 310
780 to 2150

Thermal Properties

Latent Heat of Fusion, J/g 390
250
Melting Completion (Liquidus), °C 620
1820
Melting Onset (Solidus), °C 560
1760
Specific Heat Capacity, J/kg-K 900
410
Thermal Conductivity, W/m-K 98
19
Thermal Expansion, µm/m-K 24
12

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
46
Density, g/cm3 2.7
9.3
Embodied Carbon, kg CO2/kg material 9.4
11
Embodied Energy, MJ/kg 150
170
Embodied Water, L/kg 1160
98

Common Calculations

Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 51
21
Strength to Weight: Axial, points 32
23 to 64
Strength to Weight: Bending, points 38
20 to 40
Thermal Diffusivity, mm2/s 40
4.9
Thermal Shock Resistance, points 14
23 to 65

Alloy Composition

Aluminum (Al), % 88.1 to 92.5
0
Carbon (C), % 0
0.8 to 0.9
Chromium (Cr), % 0
3.8 to 4.5
Copper (Cu), % 0 to 0.25
0 to 0.25
Iron (Fe), % 0 to 1.8
70.8 to 75.8
Magnesium (Mg), % 7.5 to 8.5
0
Manganese (Mn), % 0 to 0.35
0.2 to 0.4
Molybdenum (Mo), % 0
0 to 1.0
Nickel (Ni), % 0 to 0.15
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.35
0.2 to 0.4
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 0 to 0.15
0
Tungsten (W), % 0
17.5 to 19
Vanadium (V), % 0
1.8 to 2.4
Zinc (Zn), % 0 to 0.15
0
Residuals, % 0 to 0.25
0