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EN 1.4805 Stainless Steel vs. 5051A Aluminum

EN 1.4805 stainless steel belongs to the iron alloys classification, while 5051A aluminum belongs to the aluminum alloys. There are 27 material properties with values for both materials. Properties with values for just one material (6, 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 EN 1.4805 stainless steel and the bottom bar is 5051A aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
68
Elongation at Break, % 9.0
18 to 21
Fatigue Strength, MPa 130
51 to 61
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
26
Tensile Strength: Ultimate (UTS), MPa 490
170
Tensile Strength: Yield (Proof), MPa 250
56

Thermal Properties

Latent Heat of Fusion, J/g 310
400
Maximum Temperature: Mechanical, °C 1000
190
Melting Completion (Liquidus), °C 1390
640
Melting Onset (Solidus), °C 1350
610
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 14
150
Thermal Expansion, µm/m-K 16
23

Otherwise Unclassified Properties

Base Metal Price, % relative 26
9.5
Density, g/cm3 7.9
2.7
Embodied Carbon, kg CO2/kg material 4.7
8.5
Embodied Energy, MJ/kg 66
150
Embodied Water, L/kg 180
1190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 37
24 to 27
Resilience: Unit (Modulus of Resilience), kJ/m3 150
23
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
50
Strength to Weight: Axial, points 17
17 to 18
Strength to Weight: Bending, points 18
25
Thermal Diffusivity, mm2/s 3.7
63
Thermal Shock Resistance, points 11
7.6

Alloy Composition

Aluminum (Al), % 0
96.1 to 98.6
Carbon (C), % 0.2 to 0.5
0
Chromium (Cr), % 19 to 23
0 to 0.3
Copper (Cu), % 0
0 to 0.050
Iron (Fe), % 44.9 to 56.8
0 to 0.45
Magnesium (Mg), % 0
1.4 to 2.1
Manganese (Mn), % 0 to 2.0
0 to 0.25
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 23 to 27
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 1.0 to 2.0
0 to 0.3
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.1
Zinc (Zn), % 0
0 to 0.2
Residuals, % 0
0 to 0.15