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354.0 Aluminum vs. SAE-AISI A7 Steel

354.0 aluminum belongs to the aluminum alloys classification, while SAE-AISI A7 steel belongs to the iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (9, 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 354.0 aluminum and the bottom bar is SAE-AISI A7 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 360 to 380
800 to 2150

Thermal Properties

Latent Heat of Fusion, J/g 530
260
Melting Completion (Liquidus), °C 600
1470
Melting Onset (Solidus), °C 550
1430
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 130
37
Thermal Expansion, µm/m-K 21
12

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
10
Density, g/cm3 2.7
7.7
Embodied Carbon, kg CO2/kg material 7.8
13
Embodied Energy, MJ/kg 150
200
Embodied Water, L/kg 1070
100

Common Calculations

Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 52
25
Strength to Weight: Axial, points 37 to 39
29 to 77
Strength to Weight: Bending, points 42 to 44
25 to 48
Thermal Diffusivity, mm2/s 52
10
Thermal Shock Resistance, points 17 to 18
27 to 72

Alloy Composition


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Aluminum (Al), % 87.3 to 89.4
0
Carbon (C), % 0
2.0 to 2.9
Chromium (Cr), % 0
5.0 to 5.8
Copper (Cu), % 1.6 to 2.0
0 to 0.25
Iron (Fe), % 0 to 0.2
81.4 to 87.7
Magnesium (Mg), % 0.4 to 0.6
0
Manganese (Mn), % 0 to 0.1
0 to 0.8
Molybdenum (Mo), % 0
0.9 to 1.4
Nickel (Ni), % 0
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 8.6 to 9.4
0 to 0.5
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.2
0
Tungsten (W), % 0
0.5 to 1.5
Vanadium (V), % 0
3.9 to 5.2
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.15
0