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358.0 Aluminum vs. SAE-AISI S2 Steel

358.0 aluminum belongs to the aluminum alloys classification, while SAE-AISI S2 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 358.0 aluminum and the bottom bar is SAE-AISI S2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
190
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
72
Tensile Strength: Ultimate (UTS), MPa 350 to 370
670 to 1940

Thermal Properties

Latent Heat of Fusion, J/g 520
260
Melting Completion (Liquidus), °C 600
1450
Melting Onset (Solidus), °C 560
1410
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 150
44
Thermal Expansion, µm/m-K 21
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 36
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 130
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 19
2.6
Density, g/cm3 2.6
7.8
Embodied Carbon, kg CO2/kg material 8.7
2.1
Embodied Energy, MJ/kg 160
30
Embodied Water, L/kg 1090
49

Common Calculations

Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 53
24
Strength to Weight: Axial, points 37 to 39
24 to 69
Strength to Weight: Bending, points 42 to 44
22 to 44
Thermal Diffusivity, mm2/s 63
12
Thermal Shock Resistance, points 16 to 17
23 to 68

Alloy Composition

Aluminum (Al), % 89.1 to 91.8
0
Beryllium (Be), % 0.1 to 0.3
0
Carbon (C), % 0
0.4 to 0.55
Chromium (Cr), % 0 to 0.2
0
Copper (Cu), % 0 to 0.2
0 to 0.25
Iron (Fe), % 0 to 0.3
96 to 98.1
Magnesium (Mg), % 0.4 to 0.6
0
Manganese (Mn), % 0 to 0.2
0.3 to 0.5
Molybdenum (Mo), % 0
0.3 to 0.6
Nickel (Ni), % 0
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 7.6 to 8.6
0.9 to 1.2
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0.1 to 0.2
0
Vanadium (V), % 0
0 to 0.5
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.15
0