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6082 Aluminum vs. AISI 409Cb Stainless Steel

6082 aluminum belongs to the aluminum alloys classification, while AISI 409Cb stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, 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 6082 aluminum and the bottom bar is AISI 409Cb stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
190
Elongation at Break, % 6.3 to 18
24
Fatigue Strength, MPa 55 to 130
140
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
75
Shear Strength, MPa 84 to 220
270
Tensile Strength: Ultimate (UTS), MPa 140 to 340
420
Tensile Strength: Yield (Proof), MPa 85 to 320
200

Thermal Properties

Latent Heat of Fusion, J/g 410
270
Maximum Temperature: Mechanical, °C 170
710
Melting Completion (Liquidus), °C 650
1450
Melting Onset (Solidus), °C 580
1410
Specific Heat Capacity, J/kg-K 900
480
Thermal Conductivity, W/m-K 160
25
Thermal Expansion, µm/m-K 23
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 42
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 140
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
8.5
Density, g/cm3 2.7
7.8
Embodied Carbon, kg CO2/kg material 8.3
2.2
Embodied Energy, MJ/kg 150
31
Embodied Water, L/kg 1170
94

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19 to 43
83
Resilience: Unit (Modulus of Resilience), kJ/m3 52 to 710
100
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 14 to 35
15
Strength to Weight: Bending, points 21 to 40
16
Thermal Diffusivity, mm2/s 67
6.7
Thermal Shock Resistance, points 6.0 to 15
15

Alloy Composition

Aluminum (Al), % 95.2 to 98.3
0
Carbon (C), % 0
0 to 0.060
Chromium (Cr), % 0 to 0.25
10.5 to 11.7
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 0 to 0.5
84.9 to 89.5
Magnesium (Mg), % 0.6 to 1.2
0
Manganese (Mn), % 0.4 to 1.0
0 to 1.0
Nickel (Ni), % 0
0 to 0.5
Niobium (Nb), % 0
0 to 0.75
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0.7 to 1.3
0 to 1.0
Sulfur (S), % 0
0 to 0.040
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.15
0