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518.0 Aluminum vs. S44660 Stainless Steel

518.0 aluminum belongs to the aluminum alloys classification, while S44660 stainless steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (3, 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 518.0 aluminum and the bottom bar is S44660 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
210
Elastic (Young's, Tensile) Modulus, GPa 67
210
Elongation at Break, % 5.0
20
Fatigue Strength, MPa 140
330
Poisson's Ratio 0.33
0.27
Shear Modulus, GPa 25
81
Shear Strength, MPa 200
410
Tensile Strength: Ultimate (UTS), MPa 310
660
Tensile Strength: Yield (Proof), MPa 190
510

Thermal Properties

Latent Heat of Fusion, J/g 390
300
Maximum Temperature: Mechanical, °C 170
1100
Melting Completion (Liquidus), °C 620
1460
Melting Onset (Solidus), °C 560
1410
Specific Heat Capacity, J/kg-K 900
480
Thermal Conductivity, W/m-K 98
17
Thermal Expansion, µm/m-K 24
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 24
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 81
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
21
Density, g/cm3 2.7
7.7
Embodied Carbon, kg CO2/kg material 9.4
4.3
Embodied Energy, MJ/kg 150
61
Embodied Water, L/kg 1160
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 14
120
Resilience: Unit (Modulus of Resilience), kJ/m3 270
640
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 51
25
Strength to Weight: Axial, points 32
24
Strength to Weight: Bending, points 38
22
Thermal Diffusivity, mm2/s 40
4.5
Thermal Shock Resistance, points 14
21

Alloy Composition

Aluminum (Al), % 88.1 to 92.5
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
25 to 28
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 0 to 1.8
60.4 to 71
Magnesium (Mg), % 7.5 to 8.5
0
Manganese (Mn), % 0 to 0.35
0 to 1.0
Molybdenum (Mo), % 0
3.0 to 4.0
Nickel (Ni), % 0 to 0.15
1.0 to 3.5
Niobium (Nb), % 0
0.2 to 1.0
Nitrogen (N), % 0
0 to 0.040
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.35
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 0 to 0.15
0
Titanium (Ti), % 0
0.2 to 1.0
Zinc (Zn), % 0 to 0.15
0
Residuals, % 0 to 0.25
0