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333.0 Aluminum vs. S31727 Stainless Steel

333.0 aluminum belongs to the aluminum alloys classification, while S31727 stainless steel belongs to the iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (8, 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 333.0 aluminum and the bottom bar is S31727 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 90 to 110
190
Elastic (Young's, Tensile) Modulus, GPa 73
200
Elongation at Break, % 1.0 to 2.0
40
Fatigue Strength, MPa 83 to 100
240
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 28
78
Shear Strength, MPa 190 to 230
430
Tensile Strength: Ultimate (UTS), MPa 230 to 280
630
Tensile Strength: Yield (Proof), MPa 130 to 210
270

Thermal Properties

Latent Heat of Fusion, J/g 520
290
Maximum Temperature: Mechanical, °C 170
1010
Melting Completion (Liquidus), °C 590
1440
Melting Onset (Solidus), °C 530
1390
Specific Heat Capacity, J/kg-K 880
470
Thermal Expansion, µm/m-K 21
16

Otherwise Unclassified Properties

Base Metal Price, % relative 10
24
Density, g/cm3 2.8
8.0
Embodied Carbon, kg CO2/kg material 7.6
4.7
Embodied Energy, MJ/kg 140
64
Embodied Water, L/kg 1040
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.1 to 4.6
200
Resilience: Unit (Modulus of Resilience), kJ/m3 120 to 290
190
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 49
24
Strength to Weight: Axial, points 22 to 27
22
Strength to Weight: Bending, points 29 to 34
20
Thermal Shock Resistance, points 11 to 13
14

Alloy Composition

Aluminum (Al), % 81.8 to 89
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
17.5 to 19
Copper (Cu), % 3.0 to 4.0
2.8 to 4.0
Iron (Fe), % 0 to 1.0
53.7 to 61.3
Magnesium (Mg), % 0.050 to 0.5
0
Manganese (Mn), % 0 to 0.5
0 to 1.0
Molybdenum (Mo), % 0
3.8 to 4.5
Nickel (Ni), % 0 to 0.5
14.5 to 16.5
Nitrogen (N), % 0
0.15 to 0.21
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 8.0 to 10
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 1.0
0
Residuals, % 0 to 0.5
0