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224.0 Aluminum vs. AISI 420 Stainless Steel

224.0 aluminum belongs to the aluminum alloys classification, while AISI 420 stainless steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (5, 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 224.0 aluminum and the bottom bar is AISI 420 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
190
Elongation at Break, % 4.0 to 10
8.0 to 15
Fatigue Strength, MPa 86 to 120
220 to 670
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
76
Tensile Strength: Ultimate (UTS), MPa 380 to 420
690 to 1720
Tensile Strength: Yield (Proof), MPa 280 to 330
380 to 1310

Thermal Properties

Latent Heat of Fusion, J/g 390
280
Maximum Temperature: Mechanical, °C 220
620
Melting Completion (Liquidus), °C 650
1510
Melting Onset (Solidus), °C 550
1450
Specific Heat Capacity, J/kg-K 870
480
Thermal Conductivity, W/m-K 120
27
Thermal Expansion, µm/m-K 23
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
3.0
Electrical Conductivity: Equal Weight (Specific), % IACS 95
3.5

Otherwise Unclassified Properties

Base Metal Price, % relative 11
7.5
Density, g/cm3 3.0
7.7
Embodied Carbon, kg CO2/kg material 8.3
2.0
Embodied Energy, MJ/kg 160
28
Embodied Water, L/kg 1150
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 16 to 35
88 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 540 to 770
380 to 4410
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 45
25
Strength to Weight: Axial, points 35 to 38
25 to 62
Strength to Weight: Bending, points 38 to 41
22 to 41
Thermal Diffusivity, mm2/s 47
7.3
Thermal Shock Resistance, points 17 to 18
25 to 62

Alloy Composition

Aluminum (Al), % 93 to 95.2
0
Carbon (C), % 0
0.15 to 0.4
Chromium (Cr), % 0
12 to 14
Copper (Cu), % 4.5 to 5.5
0
Iron (Fe), % 0 to 0.1
82.3 to 87.9
Manganese (Mn), % 0.2 to 0.5
0 to 1.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
0 to 0.75
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.060
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.35
0
Vanadium (V), % 0.050 to 0.15
0
Zirconium (Zr), % 0.1 to 0.25
0
Residuals, % 0 to 0.1
0