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518.0 Aluminum vs. SAE-AISI M48 Steel

518.0 aluminum belongs to the aluminum alloys classification, while SAE-AISI M48 steel belongs to the iron alloys. There are 19 material properties with values for both materials. Properties with values for just one material (13, 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 M48 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
78
Tensile Strength: Ultimate (UTS), MPa 310
890 to 2390

Thermal Properties

Latent Heat of Fusion, J/g 390
260
Melting Completion (Liquidus), °C 620
1670
Melting Onset (Solidus), °C 560
1620
Specific Heat Capacity, J/kg-K 900
420
Thermal Expansion, µm/m-K 24
12

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
48
Density, g/cm3 2.7
8.7
Embodied Carbon, kg CO2/kg material 9.4
13
Embodied Energy, MJ/kg 150
190
Embodied Water, L/kg 1160
160

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 51
22
Strength to Weight: Axial, points 32
28 to 76
Strength to Weight: Bending, points 38
23 to 45
Thermal Shock Resistance, points 14
26 to 71

Alloy Composition

Aluminum (Al), % 88.1 to 92.5
0
Carbon (C), % 0
1.4 to 1.5
Chromium (Cr), % 0
3.5 to 4.0
Cobalt (Co), % 0
8.0 to 10
Copper (Cu), % 0 to 0.25
0 to 0.25
Iron (Fe), % 0 to 1.8
63.8 to 69.8
Magnesium (Mg), % 7.5 to 8.5
0
Manganese (Mn), % 0 to 0.35
0.15 to 0.4
Molybdenum (Mo), % 0
4.8 to 5.5
Nickel (Ni), % 0 to 0.15
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.35
0.15 to 0.4
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 0 to 0.15
0
Tungsten (W), % 0
9.5 to 10.5
Vanadium (V), % 0
2.8 to 3.3
Zinc (Zn), % 0 to 0.15
0
Residuals, % 0 to 0.25
0