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AISI 201LN Stainless Steel vs. 328.0 Aluminum

AISI 201LN stainless steel belongs to the iron alloys classification, while 328.0 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, 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 328.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210 to 320
60 to 82
Elastic (Young's, Tensile) Modulus, GPa 200
72
Elongation at Break, % 25 to 51
1.6 to 2.1
Fatigue Strength, MPa 340 to 540
55 to 80
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
27
Tensile Strength: Ultimate (UTS), MPa 740 to 1060
200 to 270
Tensile Strength: Yield (Proof), MPa 350 to 770
120 to 170

Thermal Properties

Latent Heat of Fusion, J/g 280
510
Maximum Temperature: Mechanical, °C 880
180
Melting Completion (Liquidus), °C 1410
620
Melting Onset (Solidus), °C 1370
560
Specific Heat Capacity, J/kg-K 480
890
Thermal Conductivity, W/m-K 15
120
Thermal Expansion, µm/m-K 17
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
30
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
99

Otherwise Unclassified Properties

Base Metal Price, % relative 12
10
Density, g/cm3 7.7
2.7
Embodied Carbon, kg CO2/kg material 2.6
7.8
Embodied Energy, MJ/kg 38
140
Embodied Water, L/kg 140
1070

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 230 to 310
2.8 to 5.0
Resilience: Unit (Modulus of Resilience), kJ/m3 310 to 1520
92 to 200
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
51
Strength to Weight: Axial, points 27 to 38
21 to 28
Strength to Weight: Bending, points 24 to 30
28 to 34
Thermal Diffusivity, mm2/s 4.0
50
Thermal Shock Resistance, points 16 to 23
9.2 to 12

Alloy Composition

Aluminum (Al), % 0
84.5 to 91.1
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 16 to 17.5
0 to 0.35
Copper (Cu), % 0 to 1.0
1.0 to 2.0
Iron (Fe), % 67.9 to 73.5
0 to 1.0
Magnesium (Mg), % 0
0.2 to 0.6
Manganese (Mn), % 6.4 to 7.5
0.2 to 0.6
Nickel (Ni), % 4.0 to 5.0
0 to 0.25
Nitrogen (N), % 0.1 to 0.25
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 0.75
7.5 to 8.5
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0
0 to 1.5
Residuals, % 0
0 to 0.5