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324.0 Aluminum vs. EN 1.4378 Stainless Steel

324.0 aluminum belongs to the aluminum alloys classification, while EN 1.4378 stainless steel belongs to the iron alloys. There are 25 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 324.0 aluminum and the bottom bar is EN 1.4378 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
200
Elongation at Break, % 3.0 to 4.0
14 to 34
Fatigue Strength, MPa 77 to 89
340 to 550
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
77
Tensile Strength: Ultimate (UTS), MPa 210 to 310
760 to 1130
Tensile Strength: Yield (Proof), MPa 110 to 270
430 to 970

Thermal Properties

Latent Heat of Fusion, J/g 500
290
Maximum Temperature: Mechanical, °C 170
910
Melting Completion (Liquidus), °C 610
1390
Melting Onset (Solidus), °C 550
1350
Specific Heat Capacity, J/kg-K 900
480
Thermal Expansion, µm/m-K 21
17

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
12
Density, g/cm3 2.7
7.6
Embodied Carbon, kg CO2/kg material 7.9
2.7
Embodied Energy, MJ/kg 150
39
Embodied Water, L/kg 1090
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.8 to 8.9
150 to 220
Resilience: Unit (Modulus of Resilience), kJ/m3 85 to 510
470 to 2370
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 52
25
Strength to Weight: Axial, points 22 to 32
28 to 41
Strength to Weight: Bending, points 29 to 38
24 to 31
Thermal Shock Resistance, points 9.7 to 14
16 to 23

Alloy Composition

Aluminum (Al), % 87.3 to 92.2
0
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0
17 to 19
Copper (Cu), % 0.4 to 0.6
0
Iron (Fe), % 0 to 1.2
61.2 to 69
Magnesium (Mg), % 0.4 to 0.7
0
Manganese (Mn), % 0 to 0.5
11.5 to 14.5
Nickel (Ni), % 0 to 0.3
2.3 to 3.7
Nitrogen (N), % 0
0.2 to 0.4
Phosphorus (P), % 0
0 to 0.060
Silicon (Si), % 7.0 to 8.0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0 to 1.0
0
Residuals, % 0 to 0.2
0