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S20910 Stainless Steel vs. 6063 Aluminum

S20910 stainless steel belongs to the iron alloys classification, while 6063 aluminum belongs to the aluminum alloys. There are 29 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 S20910 stainless steel and the bottom bar is 6063 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230 to 290
25 to 95
Elastic (Young's, Tensile) Modulus, GPa 200
68
Elongation at Break, % 14 to 39
7.3 to 21
Fatigue Strength, MPa 310 to 460
39 to 95
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 79
26
Shear Strength, MPa 500 to 570
70 to 190
Tensile Strength: Ultimate (UTS), MPa 780 to 940
110 to 300
Tensile Strength: Yield (Proof), MPa 430 to 810
49 to 270

Thermal Properties

Latent Heat of Fusion, J/g 300
400
Maximum Temperature: Mechanical, °C 1080
160
Melting Completion (Liquidus), °C 1420
650
Melting Onset (Solidus), °C 1380
620
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 13
190 to 220
Thermal Expansion, µm/m-K 16
23

Otherwise Unclassified Properties

Base Metal Price, % relative 22
9.5
Density, g/cm3 7.8
2.7
Embodied Carbon, kg CO2/kg material 4.8
8.3
Embodied Energy, MJ/kg 68
150
Embodied Water, L/kg 180
1190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 260
13 to 27
Resilience: Unit (Modulus of Resilience), kJ/m3 460 to 1640
18 to 540
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
50
Strength to Weight: Axial, points 28 to 33
11 to 31
Strength to Weight: Bending, points 24 to 27
18 to 37
Thermal Diffusivity, mm2/s 3.6
79 to 89
Thermal Shock Resistance, points 17 to 21
4.8 to 13

Alloy Composition

Aluminum (Al), % 0
97.5 to 99.4
Carbon (C), % 0 to 0.060
0
Chromium (Cr), % 20.5 to 23.5
0 to 0.1
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 52.1 to 62.1
0 to 0.35
Magnesium (Mg), % 0
0.45 to 0.9
Manganese (Mn), % 4.0 to 6.0
0 to 0.1
Molybdenum (Mo), % 1.5 to 3.0
0
Nickel (Ni), % 11.5 to 13.5
0
Niobium (Nb), % 0.1 to 0.3
0
Nitrogen (N), % 0.2 to 0.4
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 0.75
0.2 to 0.6
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.1
Vanadium (V), % 0.1 to 0.3
0
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15

Comparable Variants