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6182 Aluminum vs. N08925 Stainless Steel

6182 aluminum belongs to the aluminum alloys classification, while N08925 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, 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 6182 aluminum and the bottom bar is N08925 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
200
Elongation at Break, % 6.8 to 13
45
Fatigue Strength, MPa 63 to 99
310
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
80
Shear Strength, MPa 140 to 190
470
Tensile Strength: Ultimate (UTS), MPa 230 to 320
680
Tensile Strength: Yield (Proof), MPa 130 to 270
340

Thermal Properties

Latent Heat of Fusion, J/g 410
300
Maximum Temperature: Mechanical, °C 190
1100
Melting Completion (Liquidus), °C 640
1460
Melting Onset (Solidus), °C 600
1410
Specific Heat Capacity, J/kg-K 900
460
Thermal Conductivity, W/m-K 160
13
Thermal Expansion, µm/m-K 23
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 130
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
33
Density, g/cm3 2.7
8.1
Embodied Carbon, kg CO2/kg material 8.4
6.2
Embodied Energy, MJ/kg 150
84
Embodied Water, L/kg 1170
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 21 to 26
250
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 520
280
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
24
Strength to Weight: Axial, points 23 to 32
23
Strength to Weight: Bending, points 30 to 38
21
Thermal Diffusivity, mm2/s 65
3.5
Thermal Shock Resistance, points 10 to 14
15

Alloy Composition

Aluminum (Al), % 95 to 97.9
0
Carbon (C), % 0
0 to 0.020
Chromium (Cr), % 0 to 0.25
19 to 21
Copper (Cu), % 0 to 0.1
0.8 to 1.5
Iron (Fe), % 0 to 0.5
42.7 to 50.1
Magnesium (Mg), % 0.7 to 1.2
0
Manganese (Mn), % 0.5 to 1.0
0 to 1.0
Molybdenum (Mo), % 0
6.0 to 7.0
Nickel (Ni), % 0
24 to 26
Nitrogen (N), % 0
0.1 to 0.2
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0.9 to 1.3
0 to 0.5
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.2
0
Zirconium (Zr), % 0.050 to 0.2
0
Residuals, % 0 to 0.15
0