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EN AC-47100 Aluminum vs. SAE-AISI M3 Class 2 Steel

EN AC-47100 aluminum belongs to the aluminum alloys classification, while SAE-AISI M3 class 2 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-47100 aluminum and the bottom bar is SAE-AISI M3 class 2 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 270
770 to 2210

Thermal Properties

Latent Heat of Fusion, J/g 570
260
Melting Completion (Liquidus), °C 590
1620
Melting Onset (Solidus), °C 560
1570
Specific Heat Capacity, J/kg-K 890
440
Thermal Conductivity, W/m-K 130
26
Thermal Expansion, µm/m-K 21
12

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
25
Density, g/cm3 2.6
8.3
Embodied Carbon, kg CO2/kg material 7.6
12
Embodied Energy, MJ/kg 140
180
Embodied Water, L/kg 1030
110

Common Calculations

Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 53
23
Strength to Weight: Axial, points 28
26 to 74
Strength to Weight: Bending, points 35
22 to 45
Thermal Diffusivity, mm2/s 54
7.2
Thermal Shock Resistance, points 12
24 to 69

Alloy Composition

Aluminum (Al), % 81.4 to 88.8
0
Carbon (C), % 0
1.2 to 1.3
Chromium (Cr), % 0 to 0.1
3.8 to 4.5
Copper (Cu), % 0.7 to 1.2
0 to 0.25
Iron (Fe), % 0 to 1.3
75.8 to 82.3
Lead (Pb), % 0 to 0.2
0
Magnesium (Mg), % 0 to 0.35
0
Manganese (Mn), % 0 to 0.55
0.15 to 0.4
Molybdenum (Mo), % 0
4.8 to 6.5
Nickel (Ni), % 0 to 0.3
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 10.5 to 13.5
0.2 to 0.45
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 0 to 0.1
0
Titanium (Ti), % 0 to 0.2
0
Tungsten (W), % 0
5.0 to 6.8
Vanadium (V), % 0
2.8 to 3.8
Zinc (Zn), % 0 to 0.55
0
Residuals, % 0 to 0.25
0