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SAE-AISI M1 Steel vs. EN AC-45000 Aluminum

SAE-AISI M1 steel belongs to the iron alloys classification, while EN AC-45000 aluminum belongs to the aluminum 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 SAE-AISI M1 steel and the bottom bar is EN AC-45000 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
73
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 77
27
Tensile Strength: Ultimate (UTS), MPa 730 to 2140
180

Thermal Properties

Latent Heat of Fusion, J/g 270
470
Melting Completion (Liquidus), °C 1560
640
Melting Onset (Solidus), °C 1510
520
Specific Heat Capacity, J/kg-K 450
870
Thermal Conductivity, W/m-K 29
120
Thermal Expansion, µm/m-K 12
22

Otherwise Unclassified Properties

Base Metal Price, % relative 18
11
Density, g/cm3 8.1
3.0
Embodied Carbon, kg CO2/kg material 7.0
7.7
Embodied Energy, MJ/kg 99
140
Embodied Water, L/kg 98
1070

Common Calculations

Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
47
Strength to Weight: Axial, points 25 to 73
17
Strength to Weight: Bending, points 22 to 45
24
Thermal Diffusivity, mm2/s 8.0
47
Thermal Shock Resistance, points 23 to 66
8.0

Alloy Composition

Aluminum (Al), % 0
82.2 to 91.8
Carbon (C), % 0.78 to 0.88
0
Chromium (Cr), % 3.5 to 4.0
0 to 0.15
Copper (Cu), % 0 to 0.25
3.0 to 5.0
Iron (Fe), % 81 to 84.8
0 to 1.0
Lead (Pb), % 0
0 to 0.3
Magnesium (Mg), % 0
0 to 0.55
Manganese (Mn), % 0.15 to 0.4
0.2 to 0.65
Molybdenum (Mo), % 8.2 to 9.2
0
Nickel (Ni), % 0 to 0.3
0 to 0.45
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0.2 to 0.5
5.0 to 7.0
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
0 to 0.15
Titanium (Ti), % 0
0 to 0.25
Tungsten (W), % 1.4 to 2.1
0
Vanadium (V), % 1.0 to 1.4
0
Zinc (Zn), % 0
0 to 2.0
Residuals, % 0
0 to 0.35