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EN AC-41000 Aluminum vs. SAE-AISI M7 Steel

EN AC-41000 aluminum belongs to the aluminum alloys classification, while SAE-AISI M7 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-41000 aluminum and the bottom bar is SAE-AISI M7 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
200
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
77
Tensile Strength: Ultimate (UTS), MPa 170 to 280
760 to 2210

Thermal Properties

Latent Heat of Fusion, J/g 420
270
Melting Completion (Liquidus), °C 640
1560
Melting Onset (Solidus), °C 630
1510
Specific Heat Capacity, J/kg-K 900
450
Thermal Conductivity, W/m-K 170
28
Thermal Expansion, µm/m-K 23
12

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
18
Density, g/cm3 2.7
8.1
Embodied Carbon, kg CO2/kg material 8.2
8.9
Embodied Energy, MJ/kg 150
130
Embodied Water, L/kg 1160
100

Common Calculations

Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 51
24
Strength to Weight: Axial, points 18 to 29
26 to 76
Strength to Weight: Bending, points 26 to 35
23 to 47
Thermal Diffusivity, mm2/s 69
7.8
Thermal Shock Resistance, points 7.8 to 13
24 to 69

Alloy Composition

Aluminum (Al), % 95.2 to 97.6
0
Carbon (C), % 0
1.0 to 1.1
Chromium (Cr), % 0
3.5 to 4.0
Copper (Cu), % 0 to 0.1
0 to 0.25
Iron (Fe), % 0 to 0.6
79.8 to 83.8
Lead (Pb), % 0 to 0.050
0
Magnesium (Mg), % 0.45 to 0.65
0
Manganese (Mn), % 0.3 to 0.5
0.15 to 0.4
Molybdenum (Mo), % 0
8.2 to 9.2
Nickel (Ni), % 0 to 0.050
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 1.6 to 2.4
0.2 to 0.55
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 0 to 0.050
0
Titanium (Ti), % 0.050 to 0.2
0
Tungsten (W), % 0
1.4 to 2.1
Vanadium (V), % 0
1.8 to 2.3
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.15
0