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850.0 Aluminum vs. SAE-AISI S5 Steel

850.0 aluminum belongs to the aluminum alloys classification, while SAE-AISI S5 steel belongs to the iron alloys. There are 23 material properties with values for both materials. Properties with values for just one material (10, 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 850.0 aluminum and the bottom bar is SAE-AISI S5 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
190
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
72
Tensile Strength: Ultimate (UTS), MPa 140
680 to 1940

Thermal Properties

Latent Heat of Fusion, J/g 380
280
Melting Completion (Liquidus), °C 650
1440
Melting Onset (Solidus), °C 370
1400
Specific Heat Capacity, J/kg-K 850
480
Thermal Conductivity, W/m-K 180
42
Thermal Expansion, µm/m-K 23
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 47
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 140
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 14
3.1
Density, g/cm3 3.1
7.7
Embodied Carbon, kg CO2/kg material 8.5
2.1
Embodied Energy, MJ/kg 160
29
Embodied Water, L/kg 1160
51

Common Calculations

Stiffness to Weight: Axial, points 12
13
Stiffness to Weight: Bending, points 44
25
Strength to Weight: Axial, points 12
25 to 70
Strength to Weight: Bending, points 19
22 to 45
Thermal Diffusivity, mm2/s 69
11
Thermal Shock Resistance, points 6.1
23 to 65

Alloy Composition

Aluminum (Al), % 88.3 to 93.1
0
Carbon (C), % 0
0.5 to 0.65
Chromium (Cr), % 0
0 to 0.5
Copper (Cu), % 0.7 to 1.3
0 to 0.25
Iron (Fe), % 0 to 0.7
93.6 to 97
Magnesium (Mg), % 0 to 0.1
0
Manganese (Mn), % 0 to 0.1
0.6 to 1.0
Molybdenum (Mo), % 0
0.2 to 1.4
Nickel (Ni), % 0.7 to 1.3
0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.7
1.8 to 2.3
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 5.5 to 7.0
0
Titanium (Ti), % 0 to 0.2
0
Vanadium (V), % 0
0 to 0.35
Residuals, % 0 to 0.3
0