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520.0 Aluminum vs. SAE-AISI M3 Class 2 Steel

520.0 aluminum belongs to the aluminum alloys classification, while SAE-AISI M3 class 2 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 520.0 aluminum and the bottom bar is SAE-AISI M3 class 2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 66
200
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 25
77
Tensile Strength: Ultimate (UTS), MPa 330
770 to 2210

Thermal Properties

Latent Heat of Fusion, J/g 390
260
Melting Completion (Liquidus), °C 600
1620
Melting Onset (Solidus), °C 480
1570
Specific Heat Capacity, J/kg-K 910
440
Thermal Conductivity, W/m-K 87
26
Thermal Expansion, µm/m-K 25
12

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
25
Density, g/cm3 2.6
8.3
Embodied Carbon, kg CO2/kg material 9.8
12
Embodied Energy, MJ/kg 160
180
Embodied Water, L/kg 1170
110

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 52
23
Strength to Weight: Axial, points 35
26 to 74
Strength to Weight: Bending, points 41
22 to 45
Thermal Diffusivity, mm2/s 37
7.2
Thermal Shock Resistance, points 14
24 to 69

Alloy Composition

Aluminum (Al), % 87.9 to 90.5
0
Carbon (C), % 0
1.2 to 1.3
Chromium (Cr), % 0
3.8 to 4.5
Copper (Cu), % 0 to 0.25
0 to 0.25
Iron (Fe), % 0 to 0.3
75.8 to 82.3
Magnesium (Mg), % 9.5 to 10.6
0
Manganese (Mn), % 0 to 0.15
0.15 to 0.4
Molybdenum (Mo), % 0
4.8 to 6.5
Nickel (Ni), % 0
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.25
0.2 to 0.45
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.25
0
Tungsten (W), % 0
5.0 to 6.8
Vanadium (V), % 0
2.8 to 3.8
Zinc (Zn), % 0 to 0.15
0
Residuals, % 0 to 0.15
0