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2017 Aluminum vs. AISI 309HCb Stainless Steel

2017 aluminum belongs to the aluminum alloys classification, while AISI 309HCb stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, 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 2017 aluminum and the bottom bar is AISI 309HCb stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
200
Elongation at Break, % 12 to 18
46
Fatigue Strength, MPa 90 to 130
210
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
78
Shear Strength, MPa 130 to 260
410
Tensile Strength: Ultimate (UTS), MPa 190 to 430
590
Tensile Strength: Yield (Proof), MPa 76 to 260
230

Thermal Properties

Latent Heat of Fusion, J/g 390
300
Maximum Temperature: Mechanical, °C 190
1090
Melting Completion (Liquidus), °C 640
1420
Melting Onset (Solidus), °C 510
1380
Specific Heat Capacity, J/kg-K 880
480
Thermal Conductivity, W/m-K 150
15
Thermal Expansion, µm/m-K 24
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 38
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 110
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 10
23
Density, g/cm3 3.0
7.8
Embodied Carbon, kg CO2/kg material 8.0
4.1
Embodied Energy, MJ/kg 150
59
Embodied Water, L/kg 1140
170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24 to 66
210
Resilience: Unit (Modulus of Resilience), kJ/m3 41 to 470
130
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 46
25
Strength to Weight: Axial, points 17 to 40
21
Strength to Weight: Bending, points 24 to 42
20
Thermal Diffusivity, mm2/s 56
4.0
Thermal Shock Resistance, points 7.9 to 18
13

Alloy Composition

Aluminum (Al), % 91.6 to 95.5
0
Carbon (C), % 0
0.040 to 0.1
Chromium (Cr), % 0 to 0.1
22 to 24
Copper (Cu), % 3.5 to 4.5
0
Iron (Fe), % 0 to 0.7
56 to 66
Magnesium (Mg), % 0.4 to 0.8
0
Manganese (Mn), % 0.4 to 1.0
0 to 2.0
Nickel (Ni), % 0
12 to 16
Niobium (Nb), % 0
0 to 1.1
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0.2 to 0.8
0 to 0.75
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0 to 0.15
0