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AISI 201LN Stainless Steel vs. EN AC-71100 Aluminum

AISI 201LN stainless steel belongs to the iron alloys classification, while EN AC-71100 aluminum belongs to the aluminum alloys. There are 28 material properties with values for both materials. Properties with values for just one material (5, 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 EN AC-71100 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210 to 320
110
Elastic (Young's, Tensile) Modulus, GPa 200
72
Elongation at Break, % 25 to 51
1.1
Fatigue Strength, MPa 340 to 540
150
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 77
27
Tensile Strength: Ultimate (UTS), MPa 740 to 1060
260
Tensile Strength: Yield (Proof), MPa 350 to 770
230

Thermal Properties

Latent Heat of Fusion, J/g 280
490
Maximum Temperature: Mechanical, °C 880
170
Melting Completion (Liquidus), °C 1410
580
Melting Onset (Solidus), °C 1370
520
Specific Heat Capacity, J/kg-K 480
860
Thermal Expansion, µm/m-K 17
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
32
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
97

Otherwise Unclassified Properties

Base Metal Price, % relative 12
9.5
Density, g/cm3 7.7
2.9
Embodied Carbon, kg CO2/kg material 2.6
7.4
Embodied Energy, MJ/kg 38
140
Embodied Water, L/kg 140
1010

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 230 to 310
2.8
Resilience: Unit (Modulus of Resilience), kJ/m3 310 to 1520
360
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
47
Strength to Weight: Axial, points 27 to 38
25
Strength to Weight: Bending, points 24 to 30
31
Thermal Shock Resistance, points 16 to 23
12

Alloy Composition

Aluminum (Al), % 0
78.7 to 83.3
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 16 to 17.5
0
Copper (Cu), % 0 to 1.0
0 to 0.1
Iron (Fe), % 67.9 to 73.5
0 to 0.3
Magnesium (Mg), % 0
0.2 to 0.5
Manganese (Mn), % 6.4 to 7.5
0 to 0.15
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
7.5 to 9.5
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0
0 to 0.15
Zinc (Zn), % 0
9.0 to 10.5
Residuals, % 0
0 to 0.15