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AISI 205 Stainless Steel vs. 6351 Aluminum

AISI 205 stainless steel belongs to the iron alloys classification, while 6351 aluminum belongs to the aluminum alloys. There are 26 material properties with values for both materials. Properties with values for just one material (7, 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 AISI 205 stainless steel and the bottom bar is 6351 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
69
Elongation at Break, % 11 to 51
7.8 to 18
Fatigue Strength, MPa 410 to 640
79 to 130
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
26
Shear Strength, MPa 560 to 850
84 to 200
Tensile Strength: Ultimate (UTS), MPa 800 to 1430
140 to 310
Tensile Strength: Yield (Proof), MPa 450 to 1100
95 to 270

Thermal Properties

Latent Heat of Fusion, J/g 280
410
Maximum Temperature: Mechanical, °C 880
160
Melting Completion (Liquidus), °C 1380
650
Melting Onset (Solidus), °C 1340
570
Specific Heat Capacity, J/kg-K 480
900
Thermal Expansion, µm/m-K 18
23

Otherwise Unclassified Properties

Base Metal Price, % relative 11
9.5
Density, g/cm3 7.6
2.7
Embodied Carbon, kg CO2/kg material 2.6
8.3
Embodied Energy, MJ/kg 37
150
Embodied Water, L/kg 150
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 150 to 430
20 to 38
Resilience: Unit (Modulus of Resilience), kJ/m3 510 to 3060
65 to 540
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 26
50
Strength to Weight: Axial, points 29 to 52
14 to 32
Strength to Weight: Bending, points 25 to 37
22 to 38
Thermal Shock Resistance, points 16 to 29
6.1 to 14

Alloy Composition

Aluminum (Al), % 0
96 to 98.5
Carbon (C), % 0.12 to 0.25
0
Chromium (Cr), % 16.5 to 18.5
0
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 62.6 to 68.1
0 to 0.5
Magnesium (Mg), % 0
0.4 to 0.8
Manganese (Mn), % 14 to 15.5
0.4 to 0.8
Nickel (Ni), % 1.0 to 1.7
0
Nitrogen (N), % 0.32 to 0.4
0
Phosphorus (P), % 0 to 0.060
0
Silicon (Si), % 0 to 1.0
0.7 to 1.3
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0
0 to 0.2
Residuals, % 0
0 to 0.15

Comparable Variants