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S32550 Stainless Steel vs. EN AC-46000 Aluminum

S32550 stainless steel belongs to the iron alloys classification, while EN AC-46000 aluminum belongs to the aluminum 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 S32550 stainless steel and the bottom bar is EN AC-46000 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260
91
Elastic (Young's, Tensile) Modulus, GPa 200
73
Elongation at Break, % 21
1.0
Fatigue Strength, MPa 400
110
Poisson's Ratio 0.27
0.33
Shear Modulus, GPa 80
28
Tensile Strength: Ultimate (UTS), MPa 860
270
Tensile Strength: Yield (Proof), MPa 620
160

Thermal Properties

Latent Heat of Fusion, J/g 300
530
Maximum Temperature: Mechanical, °C 1100
180
Melting Completion (Liquidus), °C 1440
620
Melting Onset (Solidus), °C 1390
530
Specific Heat Capacity, J/kg-K 480
880
Thermal Conductivity, W/m-K 16
100
Thermal Expansion, µm/m-K 13
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
26
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
82

Otherwise Unclassified Properties

Base Metal Price, % relative 20
10
Density, g/cm3 7.8
2.8
Embodied Carbon, kg CO2/kg material 3.8
7.6
Embodied Energy, MJ/kg 53
140
Embodied Water, L/kg 180
1040

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 160
2.3
Resilience: Unit (Modulus of Resilience), kJ/m3 940
170
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
49
Strength to Weight: Axial, points 31
26
Strength to Weight: Bending, points 26
33
Thermal Diffusivity, mm2/s 4.4
42
Thermal Shock Resistance, points 23
12

Alloy Composition

Aluminum (Al), % 0
79.7 to 90
Carbon (C), % 0 to 0.040
0
Chromium (Cr), % 24 to 27
0 to 0.15
Copper (Cu), % 1.5 to 2.5
2.0 to 4.0
Iron (Fe), % 57.2 to 67
0 to 1.3
Lead (Pb), % 0
0 to 0.35
Magnesium (Mg), % 0
0.050 to 0.55
Manganese (Mn), % 0 to 1.5
0 to 0.55
Molybdenum (Mo), % 2.9 to 3.9
0
Nickel (Ni), % 4.5 to 6.5
0 to 0.55
Nitrogen (N), % 0.1 to 0.25
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
8.0 to 11
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
0 to 0.15
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0
0 to 1.2
Residuals, % 0
0 to 0.25