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5657 Aluminum vs. AISI 316Cb Stainless Steel

5657 aluminum belongs to the aluminum alloys classification, while AISI 316Cb stainless steel belongs to the iron alloys. There are 31 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 5657 aluminum and the bottom bar is AISI 316Cb stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 40 to 50
190
Elastic (Young's, Tensile) Modulus, GPa 68
200
Elongation at Break, % 6.6 to 15
34
Fatigue Strength, MPa 74 to 88
180
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
78
Shear Strength, MPa 92 to 110
390
Tensile Strength: Ultimate (UTS), MPa 150 to 200
580
Tensile Strength: Yield (Proof), MPa 140 to 170
230

Thermal Properties

Latent Heat of Fusion, J/g 400
290
Maximum Temperature: Mechanical, °C 180
940
Melting Completion (Liquidus), °C 660
1450
Melting Onset (Solidus), °C 640
1410
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 210
15
Thermal Expansion, µm/m-K 24
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 54
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 180
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
22
Density, g/cm3 2.7
7.9
Embodied Carbon, kg CO2/kg material 8.4
4.4
Embodied Energy, MJ/kg 160
61
Embodied Water, L/kg 1200
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 9.7 to 27
160
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 200
130
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 15 to 20
20
Strength to Weight: Bending, points 23 to 28
20
Thermal Diffusivity, mm2/s 84
4.1
Thermal Shock Resistance, points 6.7 to 8.6
13

Alloy Composition

Aluminum (Al), % 98.5 to 99.4
0
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0
16 to 18
Copper (Cu), % 0 to 0.1
0
Gallium (Ga), % 0 to 0.030
0
Iron (Fe), % 0 to 0.1
60.9 to 72
Magnesium (Mg), % 0.6 to 1.0
0
Manganese (Mn), % 0 to 0.030
0 to 2.0
Molybdenum (Mo), % 0
2.0 to 3.0
Nickel (Ni), % 0
10 to 14
Niobium (Nb), % 0
0 to 1.1
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0 to 0.080
0 to 0.75
Sulfur (S), % 0
0 to 0.030
Vanadium (V), % 0 to 0.050
0
Zinc (Zn), % 0 to 0.050
0
Residuals, % 0 to 0.050
0