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5454 Aluminum vs. S15500 Stainless Steel

5454 aluminum belongs to the aluminum alloys classification, while S15500 stainless steel belongs to the iron alloys. There are 31 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 5454 aluminum and the bottom bar is S15500 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 61 to 93
290 to 430
Elastic (Young's, Tensile) Modulus, GPa 69
190
Elongation at Break, % 2.3 to 18
6.8 to 16
Fatigue Strength, MPa 83 to 160
350 to 650
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
75
Shear Strength, MPa 140 to 200
540 to 870
Tensile Strength: Ultimate (UTS), MPa 230 to 350
890 to 1490
Tensile Strength: Yield (Proof), MPa 97 to 290
590 to 1310

Thermal Properties

Latent Heat of Fusion, J/g 400
280
Maximum Temperature: Mechanical, °C 190
820
Melting Completion (Liquidus), °C 650
1430
Melting Onset (Solidus), °C 600
1380
Specific Heat Capacity, J/kg-K 900
480
Thermal Conductivity, W/m-K 130
17
Thermal Expansion, µm/m-K 24
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 34
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 110
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
13
Density, g/cm3 2.7
7.8
Embodied Carbon, kg CO2/kg material 8.6
2.7
Embodied Energy, MJ/kg 150
39
Embodied Water, L/kg 1180
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.3 to 34
98 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 68 to 590
890 to 4460
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 23 to 36
32 to 53
Strength to Weight: Bending, points 30 to 41
26 to 37
Thermal Diffusivity, mm2/s 55
4.6
Thermal Shock Resistance, points 10 to 16
30 to 50

Alloy Composition

Aluminum (Al), % 94.5 to 97.1
0
Carbon (C), % 0
0 to 0.070
Chromium (Cr), % 0.050 to 0.2
14 to 15.5
Copper (Cu), % 0 to 0.1
2.5 to 4.5
Iron (Fe), % 0 to 0.4
71.9 to 79.9
Magnesium (Mg), % 2.4 to 3.0
0
Manganese (Mn), % 0.5 to 1.0
0 to 1.0
Nickel (Ni), % 0
3.5 to 5.5
Niobium (Nb), % 0
0.15 to 0.45
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.25
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0 to 0.15
0