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328.0 Aluminum vs. AISI 304L Stainless Steel

328.0 aluminum belongs to the aluminum alloys classification, while AISI 304L stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (6, 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 328.0 aluminum and the bottom bar is AISI 304L stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 60 to 82
160 to 350
Elastic (Young's, Tensile) Modulus, GPa 72
200
Elongation at Break, % 1.6 to 2.1
6.7 to 46
Fatigue Strength, MPa 55 to 80
170 to 430
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
77
Tensile Strength: Ultimate (UTS), MPa 200 to 270
540 to 1160
Tensile Strength: Yield (Proof), MPa 120 to 170
190 to 870

Thermal Properties

Latent Heat of Fusion, J/g 510
290
Maximum Temperature: Mechanical, °C 180
540
Melting Completion (Liquidus), °C 620
1450
Melting Onset (Solidus), °C 560
1400
Specific Heat Capacity, J/kg-K 890
480
Thermal Conductivity, W/m-K 120
16
Thermal Expansion, µm/m-K 22
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 30
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 99
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 10
16
Density, g/cm3 2.7
7.8
Embodied Carbon, kg CO2/kg material 7.8
3.1
Embodied Energy, MJ/kg 140
44
Embodied Water, L/kg 1070
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.8 to 5.0
71 to 240
Resilience: Unit (Modulus of Resilience), kJ/m3 92 to 200
92 to 1900
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 51
25
Strength to Weight: Axial, points 21 to 28
19 to 41
Strength to Weight: Bending, points 28 to 34
19 to 31
Thermal Diffusivity, mm2/s 50
4.2
Thermal Shock Resistance, points 9.2 to 12
12 to 25

Alloy Composition


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Aluminum (Al), % 84.5 to 91.1
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0 to 0.35
18 to 20
Copper (Cu), % 1.0 to 2.0
0
Iron (Fe), % 0 to 1.0
65 to 74
Magnesium (Mg), % 0.2 to 0.6
0
Manganese (Mn), % 0.2 to 0.6
0 to 2.0
Nickel (Ni), % 0 to 0.25
8.0 to 12
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 7.5 to 8.5
0 to 0.75
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 1.5
0
Residuals, % 0 to 0.5
0