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N08811 Stainless Steel vs. EN AC-51400 Aluminum

N08811 stainless steel belongs to the iron alloys classification, while EN AC-51400 aluminum belongs to the aluminum alloys. There are 29 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 N08811 stainless steel and the bottom bar is EN AC-51400 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
67
Elongation at Break, % 33
3.4
Fatigue Strength, MPa 150
85
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
25
Tensile Strength: Ultimate (UTS), MPa 510
190
Tensile Strength: Yield (Proof), MPa 190
120

Thermal Properties

Latent Heat of Fusion, J/g 300
400
Maximum Temperature: Mechanical, °C 1100
170
Melting Completion (Liquidus), °C 1390
640
Melting Onset (Solidus), °C 1360
600
Specific Heat Capacity, J/kg-K 480
910
Thermal Conductivity, W/m-K 12
110
Thermal Expansion, µm/m-K 14
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
31
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
110

Otherwise Unclassified Properties

Base Metal Price, % relative 30
9.5
Density, g/cm3 8.0
2.7
Embodied Carbon, kg CO2/kg material 5.3
9.1
Embodied Energy, MJ/kg 76
150
Embodied Water, L/kg 200
1170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
5.6
Resilience: Unit (Modulus of Resilience), kJ/m3 94
110
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
51
Strength to Weight: Axial, points 18
20
Strength to Weight: Bending, points 18
28
Thermal Diffusivity, mm2/s 3.0
46
Thermal Shock Resistance, points 13
8.6

Alloy Composition

Aluminum (Al), % 0.15 to 0.6
90.5 to 95.5
Carbon (C), % 0.060 to 0.1
0
Chromium (Cr), % 19 to 23
0
Copper (Cu), % 0 to 0.75
0 to 0.050
Iron (Fe), % 39.5 to 50.6
0 to 0.55
Magnesium (Mg), % 0
4.5 to 6.5
Manganese (Mn), % 0 to 1.5
0 to 0.45
Nickel (Ni), % 30 to 35
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0 to 1.5
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0.15 to 0.6
0 to 0.2
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15