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AISI 316 Stainless Steel vs. 515.0 Aluminum

AISI 316 stainless steel belongs to the iron alloys classification, while 515.0 aluminum belongs to the aluminum alloys. There are 23 material properties with values for both materials. Properties with values for just one material (13, 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 AISI 316 stainless steel and the bottom bar is 515.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
70
Elongation at Break, % 8.0 to 55
10
Fatigue Strength, MPa 210 to 430
130
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 78
26
Shear Strength, MPa 350 to 690
190
Tensile Strength: Ultimate (UTS), MPa 520 to 1180
280

Thermal Properties

Latent Heat of Fusion, J/g 290
470
Maximum Temperature: Mechanical, °C 590
170
Melting Completion (Liquidus), °C 1400
620
Melting Onset (Solidus), °C 1380
620
Specific Heat Capacity, J/kg-K 470
900
Thermal Expansion, µm/m-K 16
23

Otherwise Unclassified Properties

Base Metal Price, % relative 19
9.5
Density, g/cm3 7.9
2.6
Embodied Carbon, kg CO2/kg material 3.9
8.4
Embodied Energy, MJ/kg 53
150
Embodied Water, L/kg 150
1120

Common Calculations

Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
52
Strength to Weight: Axial, points 18 to 41
30
Strength to Weight: Bending, points 18 to 31
36
Thermal Shock Resistance, points 11 to 26
13

Alloy Composition

Aluminum (Al), % 0
93.6 to 96.6
Carbon (C), % 0 to 0.080
0
Chromium (Cr), % 16 to 18
0
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 62 to 72
0 to 1.3
Magnesium (Mg), % 0
2.5 to 4.0
Manganese (Mn), % 0 to 2.0
0.4 to 0.6
Molybdenum (Mo), % 2.0 to 3.0
0
Nickel (Ni), % 10 to 14
0
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 0.75
0.5 to 10
Sulfur (S), % 0 to 0.030
0
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15