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A380.0 Aluminum vs. SAE-AISI M41 Steel

A380.0 aluminum belongs to the aluminum alloys classification, while SAE-AISI M41 steel belongs to the iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (12, 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 A380.0 aluminum and the bottom bar is SAE-AISI M41 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
200
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
77
Tensile Strength: Ultimate (UTS), MPa 290
800 to 2290

Thermal Properties

Latent Heat of Fusion, J/g 510
260
Melting Completion (Liquidus), °C 590
1600
Melting Onset (Solidus), °C 550
1550
Specific Heat Capacity, J/kg-K 870
440
Thermal Conductivity, W/m-K 96
22
Thermal Expansion, µm/m-K 22
12

Otherwise Unclassified Properties

Base Metal Price, % relative 11
33
Density, g/cm3 2.9
8.4
Embodied Carbon, kg CO2/kg material 7.5
9.1
Embodied Energy, MJ/kg 140
140
Embodied Water, L/kg 1040
120

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 48
23
Strength to Weight: Axial, points 28
26 to 76
Strength to Weight: Bending, points 34
23 to 46
Thermal Diffusivity, mm2/s 38
6.0
Thermal Shock Resistance, points 13
25 to 71

Alloy Composition

Aluminum (Al), % 80.3 to 89.5
0
Carbon (C), % 0
1.1 to 1.2
Chromium (Cr), % 0
3.8 to 4.5
Cobalt (Co), % 0
4.8 to 5.8
Copper (Cu), % 3.0 to 4.0
0 to 0.25
Iron (Fe), % 0 to 1.3
73.4 to 78.9
Magnesium (Mg), % 0 to 0.1
0
Manganese (Mn), % 0 to 0.5
0.2 to 0.6
Molybdenum (Mo), % 0
3.3 to 4.3
Nickel (Ni), % 0 to 0.5
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 7.5 to 9.5
0.15 to 0.5
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 0 to 0.35
0
Tungsten (W), % 0
6.3 to 7.0
Vanadium (V), % 0
1.8 to 2.3
Zinc (Zn), % 0 to 3.0
0
Residuals, % 0 to 0.5
0