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2011 Aluminum vs. EN 1.4859 Stainless Steel

2011 aluminum belongs to the aluminum alloys classification, while EN 1.4859 stainless steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (4, 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 2011 aluminum and the bottom bar is EN 1.4859 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
200
Elongation at Break, % 8.5 to 18
23
Fatigue Strength, MPa 74 to 120
140
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
76
Tensile Strength: Ultimate (UTS), MPa 310 to 420
490
Tensile Strength: Yield (Proof), MPa 140 to 310
210

Thermal Properties

Latent Heat of Fusion, J/g 390
310
Maximum Temperature: Mechanical, °C 190
1050
Melting Completion (Liquidus), °C 640
1410
Melting Onset (Solidus), °C 540
1360
Specific Heat Capacity, J/kg-K 870
470
Thermal Conductivity, W/m-K 140 to 170
13
Thermal Expansion, µm/m-K 23
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35 to 45
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 100 to 130
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 11
36
Density, g/cm3 3.1
8.0
Embodied Carbon, kg CO2/kg material 7.9
6.2
Embodied Energy, MJ/kg 150
88
Embodied Water, L/kg 1150
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 29 to 52
91
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 680
110
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 44
24
Strength to Weight: Axial, points 27 to 37
17
Strength to Weight: Bending, points 32 to 40
17
Thermal Diffusivity, mm2/s 51 to 64
3.4
Thermal Shock Resistance, points 14 to 19
11

Alloy Composition

Aluminum (Al), % 91.3 to 94.6
0
Bismuth (Bi), % 0.2 to 0.6
0
Carbon (C), % 0
0.050 to 0.15
Chromium (Cr), % 0
19 to 21
Copper (Cu), % 5.0 to 6.0
0
Iron (Fe), % 0 to 0.7
40.3 to 49
Lead (Pb), % 0.2 to 0.6
0
Manganese (Mn), % 0
0 to 2.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
31 to 33
Niobium (Nb), % 0
0.5 to 1.5
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.4
0.5 to 1.5
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 0 to 0.3
0
Residuals, % 0 to 0.15
0