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2024 Aluminum vs. S30415 Stainless Steel

2024 aluminum belongs to the aluminum alloys classification, while S30415 stainless steel belongs to the iron alloys. There are 30 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 2024 aluminum and the bottom bar is S30415 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
200
Elongation at Break, % 4.0 to 16
45
Fatigue Strength, MPa 90 to 180
300
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
77
Shear Strength, MPa 130 to 320
470
Tensile Strength: Ultimate (UTS), MPa 200 to 540
670
Tensile Strength: Yield (Proof), MPa 100 to 490
330

Thermal Properties

Latent Heat of Fusion, J/g 390
300
Maximum Temperature: Mechanical, °C 200
940
Melting Completion (Liquidus), °C 640
1410
Melting Onset (Solidus), °C 500
1370
Specific Heat Capacity, J/kg-K 880
480
Thermal Conductivity, W/m-K 120
21
Thermal Expansion, µm/m-K 23
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 30
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 90
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 11
15
Density, g/cm3 3.0
7.7
Embodied Carbon, kg CO2/kg material 8.3
3.1
Embodied Energy, MJ/kg 150
43
Embodied Water, L/kg 1140
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 20 to 68
250
Resilience: Unit (Modulus of Resilience), kJ/m3 70 to 1680
280
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 46
25
Strength to Weight: Axial, points 18 to 50
24
Strength to Weight: Bending, points 25 to 49
22
Thermal Diffusivity, mm2/s 46
5.6
Thermal Shock Resistance, points 8.6 to 24
15

Alloy Composition

Aluminum (Al), % 90.7 to 94.7
0
Carbon (C), % 0
0.040 to 0.060
Cerium (Ce), % 0
0.030 to 0.080
Chromium (Cr), % 0 to 0.1
18 to 19
Copper (Cu), % 3.8 to 4.9
0
Iron (Fe), % 0 to 0.5
67.8 to 71.8
Magnesium (Mg), % 1.2 to 1.8
0
Manganese (Mn), % 0.3 to 0.9
0 to 0.8
Nickel (Ni), % 0
9.0 to 10
Nitrogen (N), % 0
0.12 to 0.18
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0 to 0.5
1.0 to 2.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 0 to 0.25
0
Zirconium (Zr), % 0 to 0.2
0
Residuals, % 0 to 0.15
0