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354.0 Aluminum vs. AISI 384 Stainless Steel

354.0 aluminum belongs to the aluminum alloys classification, while AISI 384 stainless steel belongs to the iron alloys. There are 24 material properties with values for both materials. Properties with values for just one material (8, 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 354.0 aluminum and the bottom bar is AISI 384 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
200
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
76
Tensile Strength: Ultimate (UTS), MPa 360 to 380
480

Thermal Properties

Latent Heat of Fusion, J/g 530
290
Maximum Temperature: Mechanical, °C 170
910
Melting Completion (Liquidus), °C 600
1420
Melting Onset (Solidus), °C 550
1380
Specific Heat Capacity, J/kg-K 900
480
Thermal Conductivity, W/m-K 130
16
Thermal Expansion, µm/m-K 21
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 110
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
20
Density, g/cm3 2.7
7.9
Embodied Carbon, kg CO2/kg material 7.8
3.7
Embodied Energy, MJ/kg 150
52
Embodied Water, L/kg 1070
150

Common Calculations

Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 52
24
Strength to Weight: Axial, points 37 to 39
17
Strength to Weight: Bending, points 42 to 44
17
Thermal Diffusivity, mm2/s 52
4.3
Thermal Shock Resistance, points 17 to 18
11

Alloy Composition


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Aluminum (Al), % 87.3 to 89.4
0
Carbon (C), % 0
0 to 0.040
Chromium (Cr), % 0
15 to 17
Copper (Cu), % 1.6 to 2.0
0
Iron (Fe), % 0 to 0.2
60.9 to 68
Magnesium (Mg), % 0.4 to 0.6
0
Manganese (Mn), % 0 to 0.1
0 to 2.0
Nickel (Ni), % 0
17 to 19
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 8.6 to 9.4
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.15
0