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355.0 Aluminum vs. SAE-AISI H24 Steel

355.0 aluminum belongs to the aluminum alloys classification, while SAE-AISI H24 steel belongs to the iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (12, 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 355.0 aluminum and the bottom bar is SAE-AISI H24 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
200
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
78
Tensile Strength: Ultimate (UTS), MPa 200 to 260
720 to 1990

Thermal Properties

Latent Heat of Fusion, J/g 470
240
Melting Completion (Liquidus), °C 620
1750
Melting Onset (Solidus), °C 560
1700
Specific Heat Capacity, J/kg-K 890
420
Thermal Conductivity, W/m-K 150 to 170
27
Thermal Expansion, µm/m-K 22
12

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
37
Density, g/cm3 2.7
9.1
Embodied Carbon, kg CO2/kg material 8.0
6.1
Embodied Energy, MJ/kg 150
93
Embodied Water, L/kg 1120
78

Common Calculations

Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 51
22
Strength to Weight: Axial, points 20 to 27
22 to 61
Strength to Weight: Bending, points 28 to 33
20 to 39
Thermal Diffusivity, mm2/s 60 to 69
6.9
Thermal Shock Resistance, points 9.1 to 12
22 to 61

Alloy Composition

Aluminum (Al), % 90.3 to 94.1
0
Carbon (C), % 0
0.42 to 0.53
Chromium (Cr), % 0 to 0.25
2.5 to 3.5
Copper (Cu), % 1.0 to 1.5
0 to 0.25
Iron (Fe), % 0 to 0.6
78 to 82.4
Magnesium (Mg), % 0.4 to 0.6
0
Manganese (Mn), % 0 to 0.5
0.15 to 0.4
Nickel (Ni), % 0
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 4.5 to 5.5
0.15 to 0.4
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.25
0
Tungsten (W), % 0
14 to 16
Vanadium (V), % 0
0.4 to 0.6
Zinc (Zn), % 0 to 0.35
0
Residuals, % 0 to 0.15
0