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6182 Aluminum vs. S20910 Stainless Steel

6182 aluminum belongs to the aluminum alloys classification, while S20910 stainless steel belongs to the iron alloys. There are 28 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 6182 aluminum and the bottom bar is S20910 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
200
Elongation at Break, % 6.8 to 13
14 to 39
Fatigue Strength, MPa 63 to 99
310 to 460
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
79
Shear Strength, MPa 140 to 190
500 to 570
Tensile Strength: Ultimate (UTS), MPa 230 to 320
780 to 940
Tensile Strength: Yield (Proof), MPa 130 to 270
430 to 810

Thermal Properties

Latent Heat of Fusion, J/g 410
300
Maximum Temperature: Mechanical, °C 190
1080
Melting Completion (Liquidus), °C 640
1420
Melting Onset (Solidus), °C 600
1380
Specific Heat Capacity, J/kg-K 900
480
Thermal Conductivity, W/m-K 160
13
Thermal Expansion, µm/m-K 23
16

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
22
Density, g/cm3 2.7
7.8
Embodied Carbon, kg CO2/kg material 8.4
4.8
Embodied Energy, MJ/kg 150
68
Embodied Water, L/kg 1170
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 21 to 26
120 to 260
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 520
460 to 1640
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 23 to 32
28 to 33
Strength to Weight: Bending, points 30 to 38
24 to 27
Thermal Diffusivity, mm2/s 65
3.6
Thermal Shock Resistance, points 10 to 14
17 to 21

Alloy Composition

Aluminum (Al), % 95 to 97.9
0
Carbon (C), % 0
0 to 0.060
Chromium (Cr), % 0 to 0.25
20.5 to 23.5
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 0 to 0.5
52.1 to 62.1
Magnesium (Mg), % 0.7 to 1.2
0
Manganese (Mn), % 0.5 to 1.0
4.0 to 6.0
Molybdenum (Mo), % 0
1.5 to 3.0
Nickel (Ni), % 0
11.5 to 13.5
Niobium (Nb), % 0
0.1 to 0.3
Nitrogen (N), % 0
0.2 to 0.4
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0.9 to 1.3
0 to 0.75
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.1
0
Vanadium (V), % 0
0.1 to 0.3
Zinc (Zn), % 0 to 0.2
0
Zirconium (Zr), % 0.050 to 0.2
0
Residuals, % 0 to 0.15
0