Overview
Al2014 (AA2014) is a high-strength copper-based aluminum alloy belonging to the 2000 series aluminum family. It is widely used in aerospace, transportation, military, heavy machinery, and high-performance engineering applications where excellent strength-to-weight ratio is required.
Compared with Al2011, Al2014 offers significantly higher mechanical strength and better structural performance, while maintaining good machinability. However, its corrosion resistance and weldability are lower than 6000 series aluminum alloys.
Al2014 is commonly selected for structural components, aircraft fittings, heavy-duty machined parts, gears, shafts, and applications requiring high load-bearing capacity.
Material Specification
| Property | Value |
|---|---|
| Alloy Designation | AA2014 |
| Alloy Series | 2000 Series |
| Main Alloying Element | Copper |
| Material Type | High Strength Aluminum Alloy |
| Density | 2.80 g/cm³ |
| Standard Forms | Plate, Bar, Rod, Forgings, Extrusions |
Chemical Composition
| Element | Content (%) |
|---|---|
| Aluminum (Al) | Balance |
| Copper (Cu) | 3.9–5.0 |
| Silicon (Si) | 0.5–1.2 |
| Magnesium (Mg) | 0.2–0.8 |
| Manganese (Mn) | 0.4–1.2 |
| Iron (Fe) | ≤0.7 |
| Zinc (Zn) | ≤0.25 |
| Titanium (Ti) | ≤0.15 |
| Chromium (Cr) | ≤0.10 |
| Others | ≤0.15 Total |
Mechanical Properties
Typical T6 Condition
| Property | Value |
|---|---|
| Tensile Strength | 420–485 MPa |
| Yield Strength | 290–415 MPa |
| Elongation | 10–16% |
| Hardness | 120–140 HB |
| Elastic Modulus | 73 GPa |
| Fatigue Strength | 135 MPa |
Physical Properties
| Property | Value |
|---|---|
| Density | 2.80 g/cm³ |
| Melting Point | 510–640°C |
| Thermal Conductivity | 155 W/m·K |
| Electrical Conductivity | 30–34% IACS |
| Thermal Expansion Coefficient | 22.7 × 10⁻⁶/K |
| Specific Heat Capacity | 875 J/kg·K |
Corrosion Resistance
| Environment | Performance |
|---|---|
| Atmospheric Exposure | Fair |
| Marine Environment | Poor |
| Salt Spray Environment | Poor |
| Industrial Environment | Fair |
| Chemical Exposure | Fair |
Due to its relatively high copper content, Al2014 is susceptible to corrosion and is typically used with anodizing, conversion coating, painting, or plating for enhanced durability.
International Equivalent Grades
| Standard | Equivalent Grade |
|---|---|
| AA (USA) | AA2014 |
| EN (Europe) | EN AW-2014 |
| DIN (Germany) | AlCuSiMn |
| JIS (Japan) | A2014 |
| ISO | AlCuSiMn |
| GB/T (China) | 2A12 (Closest Equivalent) |
| UNS | A92014 |
Available Tempers
| Temper | Description |
|---|---|
| T4 | Solution Heat Treated & Naturally Aged |
| T6 | Solution Heat Treated & Artificially Aged |
| T651 | Stress Relieved & Artificially Aged |
| T6511 | Stress Relieved Extrusion |
Typical Applications
Aerospace Industry
- Aircraft Structural Components
- Wing Structures
- Aircraft Fittings
- Aerospace Fasteners
Defense Industry
- Military Equipment
- Weapons Components
- Vehicle Structures
Transportation Industry
- Heavy-Duty Components
- Rail Equipment
- Automotive Structural Parts
Mechanical Engineering
- Precision Machined Parts
- Gears
- Shafts
- Couplings
- Structural Brackets
Industrial Equipment
- Hydraulic Components
- Machine Frames
- Tooling Fixtures
- High-Load Assemblies
Machining Characteristics
| Manufacturing Process | Rating |
|---|---|
| CNC Milling | Excellent |
| CNC Turning | Excellent |
| Drilling | Excellent |
| Tapping | Excellent |
| Threading | Excellent |
| Forging | Excellent |
| Welding | Poor |
| Sheet Metal Fabrication | Fair |
| Bending | Fair |
| Anodizing | Good |
Advantages
High Strength
One of the strongest aluminum alloys available for structural applications.
Excellent Machinability
Suitable for precision CNC machining and complex parts manufacturing.
Good Fatigue Resistance
Performs well under cyclic loading conditions.
Excellent Strength-to-Weight Ratio
Provides steel-like performance at approximately one-third the weight.
Heat Treatable
Mechanical properties can be significantly enhanced through heat treatment.
Good Structural Performance
Ideal for aerospace and heavy-duty engineering applications.
Limitations
Lower Corrosion Resistance
Requires protective surface finishing for outdoor use.
Poor Weldability
Not recommended for welded assemblies.
Lower Formability
Less suitable for deep drawing or complex sheet metal forming.
Stress Corrosion Sensitivity
May require proper design and surface protection in harsh environments.
Comparison with Other Aluminum Alloys
| Property | Al2014 | Al2011 | Al2024 | Al6061 | Al7075 |
|---|---|---|---|---|---|
| Strength | High | Medium-High | Very High | High | Very High |
| Machinability | Excellent | Excellent | Good | Excellent | Excellent |
| Corrosion Resistance | Fair | Fair | Fair | Good | Fair |
| Weldability | Poor | Poor | Poor | Good | Poor |
| Fatigue Resistance | Good | Medium | Excellent | Good | Excellent |
| Structural Performance | Excellent | Medium | Excellent | Good | Excellent |
| Cost | Medium | Medium | High | Medium | High |
Comparison with Common Engineering Metals
| Material | Density (g/cm³) | Corrosion Resistance | Strength | Machinability |
|---|---|---|---|---|
| Al2014 | 2.80 | Fair | High | Excellent |
| Al6061 | 2.70 | Good | High | Excellent |
| Al7075 | 2.81 | Fair | Very High | Excellent |
| Carbon Steel 1045 | 7.85 | Poor | High | Good |
| Stainless Steel 304 | 7.93 | Excellent | Medium | Medium |
| Titanium Grade 5 | 4.43 | Excellent | Very High | Fair |
Recommended Surface Finishes
- Clear Anodizing
- Hard Anodizing
- Chromate Conversion Coating
- Alodine Treatment
- Nickel Plating
- Zinc Plating
- Powder Coating
- Wet Painting
- Laser Marking
Frequently Asked Questions (FAQ)
What is Al2014 aluminum?
Al2014 is a high-strength copper-based aluminum alloy designed for structural and aerospace applications requiring excellent strength and machinability.
What is Al2014 used for?
Common applications include:
- Aerospace Structures
- Aircraft Components
- High-Strength CNC Parts
- Gears
- Shafts
- Industrial Machinery Components
Is Al2014 stronger than 6061?
Yes.
| Property | Al2014 | Al6061 |
|---|---|---|
| Tensile Strength | Up to 485 MPa | Up to 310 MPa |
| Yield Strength | Up to 415 MPa | Up to 276 MPa |
| Structural Performance | Higher | Lower |
Al2014 provides significantly greater strength than 6061.
Is Al2014 suitable for CNC machining?
Yes. Al2014 offers excellent machinability and is widely used for precision CNC machined parts.
Can Al2014 be welded?
Generally no. Welding is not recommended because it can significantly reduce mechanical properties.
Does Al2014 anodize well?
Yes. Al2014 can be anodized, although cosmetic appearance may vary due to copper content.
Is Al2014 corrosion resistant?
Al2014 has moderate corrosion resistance and typically requires protective surface treatment.
What is the difference between Al2014 and Al2024?
Al2024 generally offers better fatigue resistance, while Al2014 provides slightly better machinability.
What industries commonly use Al2014?
- Aerospace
- Defense
- Automotive
- Transportation
- Heavy Machinery
- Industrial Equipment
Does GCNOV provide custom manufacturing services for Al2014?
Yes. GCNOV provides:
- CNC Milling
- CNC Turning
- Precision Machining
- Fixture Manufacturing
- Structural Components
- Surface Finishing
- Prototype Development
- Low-Volume Production
- Mass Production