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3102 Aluminum vs. AISI 201LN Stainless Steel

3102 aluminum belongs to the aluminum alloys classification, while AISI 201LN stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, 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 3102 aluminum and the bottom bar is AISI 201LN stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
200
Elongation at Break, % 23 to 28
25 to 51
Fatigue Strength, MPa 31 to 34
340 to 540
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
77
Shear Strength, MPa 58 to 65
530 to 680
Tensile Strength: Ultimate (UTS), MPa 92 to 100
740 to 1060
Tensile Strength: Yield (Proof), MPa 28 to 34
350 to 770

Thermal Properties

Latent Heat of Fusion, J/g 400
280
Maximum Temperature: Mechanical, °C 180
880
Melting Completion (Liquidus), °C 640
1410
Melting Onset (Solidus), °C 640
1370
Specific Heat Capacity, J/kg-K 900
480
Thermal Conductivity, W/m-K 230
15
Thermal Expansion, µm/m-K 23
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 56
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 190
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
12
Density, g/cm3 2.7
7.7
Embodied Carbon, kg CO2/kg material 8.2
2.6
Embodied Energy, MJ/kg 150
38
Embodied Water, L/kg 1190
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 16 to 22
230 to 310
Resilience: Unit (Modulus of Resilience), kJ/m3 5.8 to 8.3
310 to 1520
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 9.4 to 10
27 to 38
Strength to Weight: Bending, points 17 to 18
24 to 30
Thermal Diffusivity, mm2/s 92
4.0
Thermal Shock Resistance, points 4.1 to 4.4
16 to 23

Alloy Composition

Aluminum (Al), % 97.9 to 99.95
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
16 to 17.5
Copper (Cu), % 0 to 0.1
0 to 1.0
Iron (Fe), % 0 to 0.7
67.9 to 73.5
Manganese (Mn), % 0.050 to 0.4
6.4 to 7.5
Nickel (Ni), % 0
4.0 to 5.0
Nitrogen (N), % 0
0.1 to 0.25
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0 to 0.4
0 to 0.75
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.3
0
Residuals, % 0 to 0.15
0

Comparable Variants