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2011 Aluminum vs. EN 1.4303 Stainless Steel

2011 aluminum belongs to the aluminum alloys classification, while EN 1.4303 stainless steel belongs to the iron alloys. There are 30 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 1.4303 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
200
Elongation at Break, % 8.5 to 18
13 to 49
Fatigue Strength, MPa 74 to 120
220 to 320
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
77
Shear Strength, MPa 190 to 250
420 to 540
Tensile Strength: Ultimate (UTS), MPa 310 to 420
590 to 900
Tensile Strength: Yield (Proof), MPa 140 to 310
230 to 560

Thermal Properties

Latent Heat of Fusion, J/g 390
290
Maximum Temperature: Mechanical, °C 190
940
Melting Completion (Liquidus), °C 640
1420
Melting Onset (Solidus), °C 540
1380
Specific Heat Capacity, J/kg-K 870
480
Thermal Conductivity, W/m-K 140 to 170
15
Thermal Expansion, µm/m-K 23
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35 to 45
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 100 to 130
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 11
17
Density, g/cm3 3.1
7.8
Embodied Carbon, kg CO2/kg material 7.9
3.2
Embodied Energy, MJ/kg 150
46
Embodied Water, L/kg 1150
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 29 to 52
110 to 230
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 680
140 to 800
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 44
25
Strength to Weight: Axial, points 27 to 37
21 to 32
Strength to Weight: Bending, points 32 to 40
20 to 26
Thermal Diffusivity, mm2/s 51 to 64
4.0
Thermal Shock Resistance, points 14 to 19
13 to 20

Alloy Composition

Aluminum (Al), % 91.3 to 94.6
0
Bismuth (Bi), % 0.2 to 0.6
0
Carbon (C), % 0
0 to 0.060
Chromium (Cr), % 0
17 to 19
Copper (Cu), % 5.0 to 6.0
0
Iron (Fe), % 0 to 0.7
64.8 to 72
Lead (Pb), % 0.2 to 0.6
0
Manganese (Mn), % 0
0 to 2.0
Nickel (Ni), % 0
11 to 13
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0 to 0.4
0 to 1.0
Sulfur (S), % 0
0 to 0.015
Zinc (Zn), % 0 to 0.3
0
Residuals, % 0 to 0.15
0

Comparable Variants