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S15500 Stainless Steel vs. 5059 Aluminum

S15500 stainless steel belongs to the iron alloys classification, while 5059 aluminum belongs to the aluminum 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 S15500 stainless steel and the bottom bar is 5059 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
69
Elongation at Break, % 6.8 to 16
11 to 25
Fatigue Strength, MPa 350 to 650
170 to 240
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 75
26
Shear Strength, MPa 540 to 870
220 to 250
Tensile Strength: Ultimate (UTS), MPa 890 to 1490
350 to 410
Tensile Strength: Yield (Proof), MPa 590 to 1310
170 to 300

Thermal Properties

Latent Heat of Fusion, J/g 280
390
Maximum Temperature: Corrosion, °C 440
65
Maximum Temperature: Mechanical, °C 820
210
Melting Completion (Liquidus), °C 1430
650
Melting Onset (Solidus), °C 1380
510
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 17
110
Thermal Expansion, µm/m-K 11
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
29
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
95

Otherwise Unclassified Properties

Base Metal Price, % relative 13
9.5
Density, g/cm3 7.8
2.7
Embodied Carbon, kg CO2/kg material 2.7
9.1
Embodied Energy, MJ/kg 39
160
Embodied Water, L/kg 130
1160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 98 to 120
42 to 75
Resilience: Unit (Modulus of Resilience), kJ/m3 890 to 4460
220 to 650
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
50
Strength to Weight: Axial, points 32 to 53
36 to 42
Strength to Weight: Bending, points 26 to 37
41 to 45
Thermal Diffusivity, mm2/s 4.6
44
Thermal Shock Resistance, points 30 to 50
16 to 18

Alloy Composition


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Aluminum (Al), % 0
89.9 to 94
Carbon (C), % 0 to 0.070
0
Chromium (Cr), % 14 to 15.5
0 to 0.25
Copper (Cu), % 2.5 to 4.5
0 to 0.25
Iron (Fe), % 71.9 to 79.9
0 to 0.5
Magnesium (Mg), % 0
5.0 to 6.0
Manganese (Mn), % 0 to 1.0
0.6 to 1.2
Nickel (Ni), % 3.5 to 5.5
0
Niobium (Nb), % 0.15 to 0.45
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0 to 0.45
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0
0.4 to 0.9
Zirconium (Zr), % 0
0.050 to 0.25
Residuals, % 0
0 to 0.15