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A535.0 Aluminum vs. AISI 309S Stainless Steel

A535.0 aluminum belongs to the aluminum alloys classification, while AISI 309S stainless steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (6, 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 A535.0 aluminum and the bottom bar is AISI 309S stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 67
200
Elongation at Break, % 9.0
42
Fatigue Strength, MPa 95
210
Poisson's Ratio 0.33
0.27
Shear Modulus, GPa 25
78
Tensile Strength: Ultimate (UTS), MPa 250
580
Tensile Strength: Yield (Proof), MPa 120
230

Thermal Properties

Latent Heat of Fusion, J/g 390
290
Maximum Temperature: Mechanical, °C 170
1080
Melting Completion (Liquidus), °C 620
1420
Melting Onset (Solidus), °C 550
1370
Specific Heat Capacity, J/kg-K 910
480
Thermal Conductivity, W/m-K 100
15
Thermal Expansion, µm/m-K 24
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 23
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 79
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
19
Density, g/cm3 2.6
7.8
Embodied Carbon, kg CO2/kg material 9.3
3.6
Embodied Energy, MJ/kg 160
51
Embodied Water, L/kg 1180
170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19
190
Resilience: Unit (Modulus of Resilience), kJ/m3 120
140
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 51
25
Strength to Weight: Axial, points 26
21
Strength to Weight: Bending, points 33
20
Thermal Diffusivity, mm2/s 42
4.0
Thermal Shock Resistance, points 11
13

Alloy Composition

Aluminum (Al), % 91.4 to 93.4
0
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0
22 to 24
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 0 to 0.2
58.1 to 66
Magnesium (Mg), % 6.5 to 7.5
0
Manganese (Mn), % 0.1 to 0.25
0 to 2.0
Nickel (Ni), % 0
12 to 15
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0 to 0.2
0 to 0.75
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.25
0
Residuals, % 0 to 0.15
0