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392.0 Aluminum vs. SAE-AISI T4 Steel

392.0 aluminum belongs to the aluminum alloys classification, while SAE-AISI T4 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 392.0 aluminum and the bottom bar is SAE-AISI T4 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 75
210
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 28
80
Tensile Strength: Ultimate (UTS), MPa 290
800 to 2140

Thermal Properties

Latent Heat of Fusion, J/g 670
250
Melting Completion (Liquidus), °C 670
1810
Melting Onset (Solidus), °C 580
1750
Specific Heat Capacity, J/kg-K 900
410
Thermal Conductivity, W/m-K 130
21
Thermal Expansion, µm/m-K 19
12

Otherwise Unclassified Properties

Base Metal Price, % relative 10
55
Density, g/cm3 2.5
9.4
Embodied Carbon, kg CO2/kg material 7.5
8.5
Embodied Energy, MJ/kg 140
130
Embodied Water, L/kg 950
120

Common Calculations

Stiffness to Weight: Axial, points 17
12
Stiffness to Weight: Bending, points 56
21
Strength to Weight: Axial, points 32
24 to 64
Strength to Weight: Bending, points 39
20 to 39
Thermal Diffusivity, mm2/s 60
5.4
Thermal Shock Resistance, points 15
24 to 64

Alloy Composition

Aluminum (Al), % 73.9 to 80.6
0
Carbon (C), % 0
0.7 to 0.8
Chromium (Cr), % 0
3.8 to 4.5
Cobalt (Co), % 0
4.3 to 5.8
Copper (Cu), % 0.4 to 0.8
0 to 0.25
Iron (Fe), % 0 to 1.5
66.3 to 72.3
Magnesium (Mg), % 0.8 to 1.2
0
Manganese (Mn), % 0.2 to 0.6
0.1 to 0.4
Molybdenum (Mo), % 0
0.4 to 1.0
Nickel (Ni), % 0 to 0.5
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 18 to 20
0.2 to 0.4
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 0 to 0.3
0
Titanium (Ti), % 0 to 0.2
0
Tungsten (W), % 0
17.5 to 19
Vanadium (V), % 0
0.8 to 1.2
Zinc (Zn), % 0 to 0.5
0
Residuals, % 0 to 0.5
0