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SAE-AISI A9 Steel vs. 711.0 Aluminum

SAE-AISI A9 steel belongs to the iron alloys classification, while 711.0 aluminum belongs to the aluminum alloys. There are 23 material properties with values for both materials. Properties with values for just one material (8, 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 SAE-AISI A9 steel and the bottom bar is 711.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
71
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 74
27
Tensile Strength: Ultimate (UTS), MPa 770 to 2030
220

Thermal Properties

Latent Heat of Fusion, J/g 280
380
Melting Completion (Liquidus), °C 1460
640
Melting Onset (Solidus), °C 1410
610
Specific Heat Capacity, J/kg-K 470
860
Thermal Conductivity, W/m-K 35
160
Thermal Expansion, µm/m-K 12
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.9
40
Electrical Conductivity: Equal Weight (Specific), % IACS 9.2
120

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
9.5
Density, g/cm3 7.8
3.0
Embodied Carbon, kg CO2/kg material 4.7
7.9
Embodied Energy, MJ/kg 70
150
Embodied Water, L/kg 82
1120

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
45
Strength to Weight: Axial, points 28 to 73
20
Strength to Weight: Bending, points 24 to 46
26
Thermal Diffusivity, mm2/s 9.6
61
Thermal Shock Resistance, points 25 to 66
9.3

Alloy Composition


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Aluminum (Al), % 0
89.8 to 92.7
Carbon (C), % 0.45 to 0.55
0
Chromium (Cr), % 4.8 to 5.5
0
Copper (Cu), % 0 to 0.25
0.35 to 0.65
Iron (Fe), % 87 to 90.5
0.7 to 1.4
Magnesium (Mg), % 0
0.25 to 0.45
Manganese (Mn), % 0 to 0.5
0 to 0.050
Molybdenum (Mo), % 1.3 to 1.8
0
Nickel (Ni), % 1.3 to 1.8
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 1.0 to 1.2
0 to 0.3
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.2
Vanadium (V), % 0.8 to 1.4
0
Zinc (Zn), % 0
6.0 to 7.0
Residuals, % 0
0 to 0.15