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SAE-AISI M44 Steel vs. 518.0 Aluminum

SAE-AISI M44 steel belongs to the iron alloys classification, while 518.0 aluminum belongs to the aluminum alloys. There are 21 material properties with values for both materials. Properties with values for just one material (11, 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 M44 steel and the bottom bar is 518.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
67
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 78
25
Tensile Strength: Ultimate (UTS), MPa 870 to 2290
310

Thermal Properties

Latent Heat of Fusion, J/g 270
390
Melting Completion (Liquidus), °C 1590
620
Melting Onset (Solidus), °C 1540
560
Specific Heat Capacity, J/kg-K 440
900
Thermal Conductivity, W/m-K 14
98
Thermal Expansion, µm/m-K 12
24

Otherwise Unclassified Properties

Base Metal Price, % relative 43
9.5
Density, g/cm3 8.4
2.7
Embodied Carbon, kg CO2/kg material 9.9
9.4
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 170
1160

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
51
Strength to Weight: Axial, points 28 to 75
32
Strength to Weight: Bending, points 24 to 46
38
Thermal Diffusivity, mm2/s 3.7
40
Thermal Shock Resistance, points 27 to 70
14

Alloy Composition

Aluminum (Al), % 0
88.1 to 92.5
Carbon (C), % 1.1 to 1.2
0
Chromium (Cr), % 4.0 to 4.8
0
Cobalt (Co), % 11 to 12.3
0
Copper (Cu), % 0 to 0.25
0 to 0.25
Iron (Fe), % 65.3 to 70.6
0 to 1.8
Magnesium (Mg), % 0
7.5 to 8.5
Manganese (Mn), % 0.2 to 0.4
0 to 0.35
Molybdenum (Mo), % 6.0 to 7.0
0
Nickel (Ni), % 0 to 0.3
0 to 0.15
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0.3 to 0.55
0 to 0.35
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
0 to 0.15
Tungsten (W), % 5.0 to 5.8
0
Vanadium (V), % 1.9 to 2.2
0
Zinc (Zn), % 0
0 to 0.15
Residuals, % 0
0 to 0.25