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AISI 316 Stainless Steel vs. 2017A Aluminum

AISI 316 stainless steel belongs to the iron alloys classification, while 2017A aluminum belongs to the aluminum alloys. There are 30 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 AISI 316 stainless steel and the bottom bar is 2017A aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
71
Elongation at Break, % 8.0 to 55
2.2 to 14
Fatigue Strength, MPa 210 to 430
92 to 130
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 78
27
Shear Strength, MPa 350 to 690
120 to 270
Tensile Strength: Ultimate (UTS), MPa 520 to 1180
200 to 460
Tensile Strength: Yield (Proof), MPa 230 to 850
110 to 290

Thermal Properties

Latent Heat of Fusion, J/g 290
390
Maximum Temperature: Mechanical, °C 590
220
Melting Completion (Liquidus), °C 1400
650
Melting Onset (Solidus), °C 1380
510
Specific Heat Capacity, J/kg-K 470
880
Thermal Conductivity, W/m-K 15
150
Thermal Expansion, µm/m-K 16
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
34
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
100

Otherwise Unclassified Properties

Base Metal Price, % relative 19
11
Density, g/cm3 7.9
3.0
Embodied Carbon, kg CO2/kg material 3.9
8.2
Embodied Energy, MJ/kg 53
150
Embodied Water, L/kg 150
1140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 85 to 260
6.7 to 53
Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 1820
90 to 570
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
46
Strength to Weight: Axial, points 18 to 41
19 to 42
Strength to Weight: Bending, points 18 to 31
26 to 44
Thermal Diffusivity, mm2/s 4.1
56
Thermal Shock Resistance, points 11 to 26
8.9 to 20

Alloy Composition

Aluminum (Al), % 0
91.3 to 95.5
Carbon (C), % 0 to 0.080
0
Chromium (Cr), % 16 to 18
0 to 0.1
Copper (Cu), % 0
3.5 to 4.5
Iron (Fe), % 62 to 72
0 to 0.7
Magnesium (Mg), % 0
0.4 to 1.0
Manganese (Mn), % 0 to 2.0
0.4 to 1.0
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
0.2 to 0.8
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0
0 to 0.25
Zirconium (Zr), % 0
0 to 0.25
Residuals, % 0
0 to 0.15

Comparable Variants