Aluminum 2011
2011-T3 aluminum has good machinability, especially easy machinability and good mechanical properties. It also has an excellent surface finish. When machined, metal chips are small and easy to fall off, resulting in a smooth surface and tight tolerances.
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Chemical Composition
Element | Content(%) |
Aluminum, Al | 91.2 – 94.6 |
Copper, Cu | 5.0 – 6.0 |
Iron, Fe | ≤ 0.70 |
Bismuth, Bi | ≤ 0.20 – 0.60 |
Lead, Pb | ≤ 0.20 – 0.60 |
Silicon, Si | ≤ 0.40 |
Zinc, Zn | ≤ 0.30 |
Physical Properties
Properties | Metric | English |
Density | 2.83 g/cc | 0.102 lb/in³/ |
Melting Point | 540.6 – 643 °C | 1005 – 1190 °F |
Mechanical Properties
Properties | Metric | English |
Hardness, Brinell | 95 | 95 |
Hardness, Knoop | 120 | 120 |
Hardness, Rockwell A | 40 | 40 |
Hardness, Rockwell B | 60 | 60 |
Hardness, Vickers | 107 | 107 |
Tensile Strength, Ultimate | 379 MPa | 55000 psi |
Tensile Strength, Yield | 296 MPa | 43000 psi |
Elongation at Break | 15% | 15% |
Modulus of Elasticity | 70.3 GPa | 10200 ksi |
Poissons Ratio | 0.33 | 0.33 |
Fatigue Strength | 124 MPa | 18000 psi |
Machinability | 90% | 90% |
Shear Modulus | 26.0 GPa | 3770 ksi |
Shear Strength | 221 MPa | 32000 psi |
Thermal Properties
Properties | Metric | English |
Specific Heat Capacity | 0.880 J/g-°C | 0.210 BTU/lb-°F |
Thermal Conductivity | 151 W/m-K | 1050 BTU-in/hr-ft²-°F |
Applications
Aluminum 2011 is used in the following application areas:
· Screw Machine Parts
· Precision Gears
· Precision Machine Parts
· Clocks
· Cameras
· Speedometers
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