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AISI 205 Stainless Steel vs. 771.0 Aluminum

AISI 205 stainless steel belongs to the iron alloys classification, while 771.0 aluminum belongs to the aluminum alloys. There are 26 material properties with values for both materials. Properties with values for just one material (8, 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 771.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210 to 440
85 to 120
Elastic (Young's, Tensile) Modulus, GPa 200
70
Elongation at Break, % 11 to 51
1.7 to 6.5
Fatigue Strength, MPa 410 to 640
92 to 180
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 77
26
Tensile Strength: Ultimate (UTS), MPa 800 to 1430
250 to 370
Tensile Strength: Yield (Proof), MPa 450 to 1100
210 to 350

Thermal Properties

Latent Heat of Fusion, J/g 280
380
Maximum Temperature: Mechanical, °C 880
180
Melting Completion (Liquidus), °C 1380
630
Melting Onset (Solidus), °C 1340
620
Specific Heat Capacity, J/kg-K 480
870
Thermal Expansion, µm/m-K 18
24

Otherwise Unclassified Properties

Base Metal Price, % relative 11
9.5
Density, g/cm3 7.6
3.0
Embodied Carbon, kg CO2/kg material 2.6
8.0
Embodied Energy, MJ/kg 37
150
Embodied Water, L/kg 150
1130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 150 to 430
4.4 to 20
Resilience: Unit (Modulus of Resilience), kJ/m3 510 to 3060
310 to 900
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 26
46
Strength to Weight: Axial, points 29 to 52
23 to 35
Strength to Weight: Bending, points 25 to 37
29 to 39
Thermal Shock Resistance, points 16 to 29
11 to 16

Alloy Composition

Aluminum (Al), % 0
90.5 to 92.5
Carbon (C), % 0.12 to 0.25
0
Chromium (Cr), % 16.5 to 18.5
0.060 to 0.2
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 62.6 to 68.1
0 to 0.15
Magnesium (Mg), % 0
0.8 to 1.0
Manganese (Mn), % 14 to 15.5
0 to 0.1
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 to 0.15
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0.1 to 0.2
Zinc (Zn), % 0
6.5 to 7.5
Residuals, % 0
0 to 0.15