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EN AC-42100 Aluminum vs. SAE-AISI T6 Steel

EN AC-42100 aluminum belongs to the aluminum alloys classification, while SAE-AISI T6 steel belongs to the iron alloys. There are 21 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 EN AC-42100 aluminum and the bottom bar is SAE-AISI T6 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
210
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
81
Tensile Strength: Ultimate (UTS), MPa 280 to 290
880 to 2150

Thermal Properties

Latent Heat of Fusion, J/g 500
250
Melting Completion (Liquidus), °C 610
1830
Melting Onset (Solidus), °C 600
1770
Specific Heat Capacity, J/kg-K 910
400
Thermal Conductivity, W/m-K 150
18
Thermal Expansion, µm/m-K 22
12

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
70
Density, g/cm3 2.6
9.5
Embodied Carbon, kg CO2/kg material 8.0
11
Embodied Energy, MJ/kg 150
170
Embodied Water, L/kg 1110
160

Common Calculations

Stiffness to Weight: Axial, points 15
12
Stiffness to Weight: Bending, points 53
21
Strength to Weight: Axial, points 30 to 31
26 to 63
Strength to Weight: Bending, points 37 to 38
21 to 39
Thermal Diffusivity, mm2/s 66
4.7
Thermal Shock Resistance, points 13
26 to 64

Alloy Composition

Aluminum (Al), % 91.3 to 93.3
0
Carbon (C), % 0
0.75 to 0.85
Chromium (Cr), % 0
4.0 to 4.8
Cobalt (Co), % 0
11 to 13
Copper (Cu), % 0 to 0.050
0 to 0.25
Iron (Fe), % 0 to 0.19
55.9 to 63.5
Magnesium (Mg), % 0.25 to 0.45
0
Manganese (Mn), % 0 to 0.1
0.2 to 0.4
Molybdenum (Mo), % 0
0.4 to 1.0
Nickel (Ni), % 0
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 6.5 to 7.5
0.2 to 0.4
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.25
0
Tungsten (W), % 0
18.5 to 21
Vanadium (V), % 0
1.5 to 2.1
Zinc (Zn), % 0 to 0.070
0
Residuals, % 0 to 0.1
0