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C355.0 Aluminum vs. N08366 Stainless Steel

C355.0 aluminum belongs to the aluminum alloys classification, while N08366 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 C355.0 aluminum and the bottom bar is N08366 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 86 to 90
180
Elastic (Young's, Tensile) Modulus, GPa 70
210
Elongation at Break, % 2.7 to 3.8
34
Fatigue Strength, MPa 76 to 84
190
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
80
Tensile Strength: Ultimate (UTS), MPa 290 to 310
590
Tensile Strength: Yield (Proof), MPa 200 to 230
240

Thermal Properties

Latent Heat of Fusion, J/g 470
310
Maximum Temperature: Mechanical, °C 170
1100
Melting Completion (Liquidus), °C 620
1460
Melting Onset (Solidus), °C 570
1410
Specific Heat Capacity, J/kg-K 900
460
Thermal Conductivity, W/m-K 150
13
Thermal Expansion, µm/m-K 22
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 39
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 130
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
33
Density, g/cm3 2.7
8.1
Embodied Carbon, kg CO2/kg material 8.0
6.2
Embodied Energy, MJ/kg 150
84
Embodied Water, L/kg 1120
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.5 to 9.8
160
Resilience: Unit (Modulus of Resilience), kJ/m3 290 to 380
150
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 51
24
Strength to Weight: Axial, points 30 to 32
20
Strength to Weight: Bending, points 36 to 37
19
Thermal Diffusivity, mm2/s 60
3.4
Thermal Shock Resistance, points 13 to 14
13

Alloy Composition

Aluminum (Al), % 91.7 to 94.1
0
Carbon (C), % 0
0 to 0.035
Chromium (Cr), % 0
20 to 22
Copper (Cu), % 1.0 to 1.5
0
Iron (Fe), % 0 to 0.2
42.4 to 50.5
Magnesium (Mg), % 0.4 to 0.6
0
Manganese (Mn), % 0 to 0.1
0 to 2.0
Molybdenum (Mo), % 0
6.0 to 7.0
Nickel (Ni), % 0
23.5 to 25.5
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 4.5 to 5.5
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.15
0