ASTM B211 Grade 2011 (T4 & T451) – Properties, Machining, and Applications
Aluminum ASTM 2011 is a popular age-hardenable alloy known for its free-machining characteristics and mechanical properties. It can be machined to very close tolerances while still maintaining a smooth and bright finish. Unlike other aluminum alloys, ASTM 2011 does not offer good corrosion resistance or weldability.
Properties
General
| Property | Value | Comment |
|---|---|---|
Density | 2.75 - 2.84 g/cm³ | Typical for Wrought 2000 Series Aluminium |
Mechanical
| Property | Value | Condition | Related Standards | Shape | Comment |
|---|---|---|---|---|---|
Elastic modulus | 70.0 - 73.0 GPa | Typical for Wrought 2000 Series Aluminium | |||
Elongation | 14.0 % | T4 and T451 | ASTM B211 | Bar, Rod, Wire | |
16.0 % | T4 and T451 | ASTM B211 | Bar, Rod, Wire | A50 | |
Plane-Strain Fracture Toughnes | 22.0 - 35.0 MPa·√m | Typical for Wrought 2000 Series Aluminium | |||
Poisson's ratio | 0.33 [-] | Typical for Wrought 2000 Series Aluminium | |||
Shear modulus | 26.0 - 27.5 GPa | Typical for Wrought 2000 Series Aluminium | |||
Tensile strength | 275.0 MPa | T4 and T451 | ASTM B211 | Bar, Rod, Wire |
Thermal
| Property | Value | Comment |
|---|---|---|
Coefficient of thermal expansion | 1.6e-05 - 2.4e-05 1/K | Typical for Wrought 2000 Series Aluminium |
Melting point | 500.0 - 650.0 °C | Typical for Wrought 2000 Series Aluminium |
Specific heat capacity | 816.0 - 963.0 J/(kg·K) | Typical for Wrought 2000 Series Aluminium |
Thermal conductivity | 112.0 - 251.0 W/(m·K) | Typical for Wrought 2000 Series Aluminium |
Electrical
| Property | Value | Comment |
|---|---|---|
Electrical conductivity | 18000000.0 - 30000000.0 S/m | Typical for Wrought 2000 Series Aluminium |
Electrical resistivity | 3.4e-08 - 6e-08 Ω·m | Typical for Wrought 2000 Series Aluminium |
Chemical properties
| Property | Value | Condition | Related Standards | Shape |
|---|---|---|---|---|
Bismuth | 0.2 - 0.6 % | T4 and T451 | ASTM B211 | Bar, Rod, Wire |
Copper | 5.0 - 6.0 % | T4 and T451 | ASTM B211 | Bar, Rod, Wire |
Iron | 0.7 | T4 and T451 | ASTM B211 | Bar, Rod, Wire |
Silicon | 0.4 | T4 and T451 | ASTM B211 | Bar, Rod, Wire |
Tin | 0.2 - 0.6 % | T4 and T451 | ASTM B211 | Bar, Rod, Wire |
Zinc | 0.3 | T4 and T451 | ASTM B211 | Bar, Rod, Wire |
Technological properties
| Property | ||
|---|---|---|
| Workability | Moderate Workability | |
Metal
- ASTM B211 Grade 3003 H12 Aluminum Alloy – Corrosion‑Resistant, Weldable & Strong
- ASTM B211 Grade 7075-O: Premium Aerospace-Grade Aluminum Alloy
- ASTM B211 Grade 2017 Aluminum Alloy – Heat‑Treatable, High Strength & Machinability
- ASTM B211 Grade 2011 T3 Aluminum – Exceptional Machining Performance & Strength
- ASTM B211 Grade 2011 Aluminum: T6 & T651 – Performance & Machining Excellence
- ASTM B211 Grade 2011 T8 Aluminum Alloy – Outstanding Machining and Mechanical Performance
- ASTM B211 Grade 3003 O Aluminum – Corrosion‑Resistant & Weldable
- ASTM B211 Grade 7075 T73/T7351 Aluminum Alloy – High Strength, Corrosion Resistance & Aerospace Performance
- ASTM B211 Grade 2017 Aluminum Alloys (T4, T42, T451) – Strength, Ductility & Machinability
- ASTM B211 Grade 5052-O Aluminum Alloy: Superior Corrosion Resistance & Weldability