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384.0 Aluminum vs. SAE-AISI P5 Steel

384.0 aluminum belongs to the aluminum alloys classification, while SAE-AISI P5 steel belongs to the iron alloys. There are 23 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 384.0 aluminum and the bottom bar is SAE-AISI P5 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 74
190
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 28
73
Tensile Strength: Ultimate (UTS), MPa 330
370 to 1980

Thermal Properties

Latent Heat of Fusion, J/g 550
250
Melting Completion (Liquidus), °C 580
1460
Melting Onset (Solidus), °C 530
1420
Specific Heat Capacity, J/kg-K 870
470
Thermal Conductivity, W/m-K 96
45
Thermal Expansion, µm/m-K 21
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 22
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 69
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 11
2.8
Density, g/cm3 2.9
7.8
Embodied Carbon, kg CO2/kg material 7.4
1.5
Embodied Energy, MJ/kg 140
20
Embodied Water, L/kg 1010
56

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 49
24
Strength to Weight: Axial, points 32
13 to 70
Strength to Weight: Bending, points 37
15 to 45
Thermal Diffusivity, mm2/s 39
12
Thermal Shock Resistance, points 15
12 to 65

Alloy Composition

Aluminum (Al), % 77.3 to 86.5
0
Carbon (C), % 0
0 to 0.1
Chromium (Cr), % 0
2.0 to 2.5
Copper (Cu), % 3.0 to 4.5
0 to 0.25
Iron (Fe), % 0 to 1.3
95.7 to 97.8
Magnesium (Mg), % 0 to 0.1
0
Manganese (Mn), % 0 to 0.5
0.2 to 0.6
Nickel (Ni), % 0 to 0.5
0 to 0.35
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 10.5 to 12
0 to 0.4
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 0 to 0.35
0
Zinc (Zn), % 0 to 3.0
0
Residuals, % 0 to 0.5
0