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1435 Aluminum vs. S31727 Stainless Steel

1435 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 1435 aluminum and the bottom bar is S31727 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
200
Elongation at Break, % 4.1 to 32
40
Fatigue Strength, MPa 27 to 49
240
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
78
Shear Strength, MPa 54 to 87
430
Tensile Strength: Ultimate (UTS), MPa 81 to 150
630
Tensile Strength: Yield (Proof), MPa 23 to 130
270

Thermal Properties

Latent Heat of Fusion, J/g 400
290
Maximum Temperature: Mechanical, °C 170
1010
Melting Completion (Liquidus), °C 650
1440
Melting Onset (Solidus), °C 640
1390
Specific Heat Capacity, J/kg-K 900
470
Thermal Expansion, µm/m-K 23
16

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
24
Density, g/cm3 2.7
8.0
Embodied Carbon, kg CO2/kg material 8.2
4.7
Embodied Energy, MJ/kg 150
64
Embodied Water, L/kg 1190
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.0 to 20
200
Resilience: Unit (Modulus of Resilience), kJ/m3 3.8 to 110
190
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
24
Strength to Weight: Axial, points 8.3 to 15
22
Strength to Weight: Bending, points 15 to 23
20
Thermal Shock Resistance, points 3.6 to 6.7
14

Alloy Composition

Aluminum (Al), % 99.35 to 99.7
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
17.5 to 19
Copper (Cu), % 0 to 0.020
2.8 to 4.0
Iron (Fe), % 0.3 to 0.5
53.7 to 61.3
Magnesium (Mg), % 0 to 0.050
0
Manganese (Mn), % 0 to 0.050
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), % 0 to 0.15
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.030
0
Zinc (Zn), % 0 to 0.1
0