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512.0 Aluminum vs. S31727 Stainless Steel

512.0 aluminum belongs to the aluminum alloys classification, while S31727 stainless steel belongs to the iron alloys. There are 26 material properties with values for both materials. Properties with values for just one material (9, 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 512.0 aluminum and the bottom bar is S31727 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 50
190
Elastic (Young's, Tensile) Modulus, GPa 69
200
Elongation at Break, % 2.0
40
Fatigue Strength, MPa 58
240
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
78
Tensile Strength: Ultimate (UTS), MPa 130
630
Tensile Strength: Yield (Proof), MPa 83
270

Thermal Properties

Latent Heat of Fusion, J/g 420
290
Maximum Temperature: Mechanical, °C 180
1010
Melting Completion (Liquidus), °C 630
1440
Melting Onset (Solidus), °C 590
1390
Specific Heat Capacity, J/kg-K 900
470
Thermal Expansion, µm/m-K 23
16

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
24
Density, g/cm3 2.7
8.0
Embodied Carbon, kg CO2/kg material 8.8
4.7
Embodied Energy, MJ/kg 150
64
Embodied Water, L/kg 1160
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.3
200
Resilience: Unit (Modulus of Resilience), kJ/m3 50
190
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 51
24
Strength to Weight: Axial, points 14
22
Strength to Weight: Bending, points 22
20
Thermal Shock Resistance, points 6.1
14

Alloy Composition

Aluminum (Al), % 90.6 to 95.1
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0 to 0.25
17.5 to 19
Copper (Cu), % 0 to 0.35
2.8 to 4.0
Iron (Fe), % 0 to 0.6
53.7 to 61.3
Magnesium (Mg), % 3.5 to 4.5
0
Manganese (Mn), % 0 to 0.8
0 to 1.0
Molybdenum (Mo), % 0
3.8 to 4.5
Nickel (Ni), % 0
14.5 to 16.5
Nitrogen (N), % 0
0.15 to 0.21
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 1.4 to 2.2
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 0.35
0
Residuals, % 0 to 0.15
0