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SAE-AISI M6 Steel vs. EN AC-71100 Aluminum

SAE-AISI M6 steel belongs to the iron alloys classification, while EN AC-71100 aluminum belongs to the aluminum alloys. There are 19 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 SAE-AISI M6 steel and the bottom bar is EN AC-71100 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
72
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 77
27
Tensile Strength: Ultimate (UTS), MPa 840 to 2210
260

Thermal Properties

Latent Heat of Fusion, J/g 260
490
Melting Completion (Liquidus), °C 1560
580
Melting Onset (Solidus), °C 1510
520
Specific Heat Capacity, J/kg-K 440
860
Thermal Expansion, µm/m-K 12
22

Otherwise Unclassified Properties

Base Metal Price, % relative 39
9.5
Density, g/cm3 8.4
2.9
Embodied Carbon, kg CO2/kg material 8.0
7.4
Embodied Energy, MJ/kg 120
140
Embodied Water, L/kg 160
1010

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
47
Strength to Weight: Axial, points 28 to 73
25
Strength to Weight: Bending, points 24 to 45
31
Thermal Shock Resistance, points 26 to 68
12

Alloy Composition

Aluminum (Al), % 0
78.7 to 83.3
Carbon (C), % 0.75 to 0.85
0
Chromium (Cr), % 3.8 to 4.5
0
Cobalt (Co), % 11 to 13
0
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 68.8 to 74.6
0 to 0.3
Magnesium (Mg), % 0
0.2 to 0.5
Manganese (Mn), % 0.15 to 0.4
0 to 0.15
Molybdenum (Mo), % 4.5 to 5.5
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0.2 to 0.45
7.5 to 9.5
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.15
Tungsten (W), % 3.8 to 4.8
0
Vanadium (V), % 1.3 to 1.7
0
Zinc (Zn), % 0
9.0 to 10.5
Residuals, % 0
0 to 0.15