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AISI 201LN Stainless Steel vs. 515.0 Aluminum

AISI 201LN stainless steel belongs to the iron alloys classification, while 515.0 aluminum belongs to the aluminum alloys. There are 23 material properties with values for both materials. Properties with values for just one material (10, 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 201LN stainless steel and the bottom bar is 515.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
70
Elongation at Break, % 25 to 51
10
Fatigue Strength, MPa 340 to 540
130
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
26
Shear Strength, MPa 530 to 680
190
Tensile Strength: Ultimate (UTS), MPa 740 to 1060
280

Thermal Properties

Latent Heat of Fusion, J/g 280
470
Maximum Temperature: Mechanical, °C 880
170
Melting Completion (Liquidus), °C 1410
620
Melting Onset (Solidus), °C 1370
620
Specific Heat Capacity, J/kg-K 480
900
Thermal Expansion, µm/m-K 17
23

Otherwise Unclassified Properties

Base Metal Price, % relative 12
9.5
Density, g/cm3 7.7
2.6
Embodied Carbon, kg CO2/kg material 2.6
8.4
Embodied Energy, MJ/kg 38
150
Embodied Water, L/kg 140
1120

Common Calculations

Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
52
Strength to Weight: Axial, points 27 to 38
30
Strength to Weight: Bending, points 24 to 30
36
Thermal Shock Resistance, points 16 to 23
13

Alloy Composition

Aluminum (Al), % 0
93.6 to 96.6
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 16 to 17.5
0
Copper (Cu), % 0 to 1.0
0 to 0.2
Iron (Fe), % 67.9 to 73.5
0 to 1.3
Magnesium (Mg), % 0
2.5 to 4.0
Manganese (Mn), % 6.4 to 7.5
0.4 to 0.6
Nickel (Ni), % 4.0 to 5.0
0
Nitrogen (N), % 0.1 to 0.25
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 0.75
0.5 to 10
Sulfur (S), % 0 to 0.015
0
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15