Overview
Al5005 (AA5005) is a medium-strength aluminum alloy belonging to the 5000 series aluminum family, with magnesium as its primary alloying element. It offers excellent corrosion resistance, superior anodizing quality, good weldability, and attractive surface appearance.
Al5005 is widely used in architectural applications, decorative panels, signage, curtain walls, electronic enclosures, and marine-related products. It is particularly valued for producing uniform anodized finishes that closely match architectural-grade aluminum extrusions such as 6063.
Compared with Al3003, Al5005 provides higher strength, improved corrosion resistance, and superior anodizing performance.
Material Specification
| Property | Value |
|---|---|
| Alloy Designation | AA5005 |
| Alloy Series | 5000 Series |
| Main Alloying Element | Magnesium (Mg) |
| Material Type | Non-Heat Treatable Aluminum Alloy |
| Density | 2.70 g/cm³ |
| Standard Forms | Sheet, Plate, Coil, Strip, Tube |
Chemical Composition
| Element | Content (%) |
|---|---|
| Aluminum (Al) | Balance |
| Magnesium (Mg) | 0.50–1.10 |
| Silicon (Si) | ≤0.30 |
| Iron (Fe) | ≤0.70 |
| Copper (Cu) | ≤0.20 |
| Manganese (Mn) | ≤0.20 |
| Zinc (Zn) | ≤0.25 |
| Chromium (Cr) | ≤0.10 |
| Others | ≤0.15 Total |
Mechanical Properties
Typical H34 Condition
| Property | Value |
|---|---|
| Tensile Strength | 145–185 MPa |
| Yield Strength | 115–145 MPa |
| Elongation | 8–20% |
| Hardness | 45–60 HB |
| Elastic Modulus | 70 GPa |
Physical Properties
| Property | Value |
|---|---|
| Density | 2.70 g/cm³ |
| Melting Point | 632–654°C |
| Thermal Conductivity | 195 W/m·K |
| Electrical Conductivity | 50–55% IACS |
| Thermal Expansion Coefficient | 23.8 × 10⁻⁶/K |
| Specific Heat Capacity | 900 J/kg·K |
Corrosion Resistance
| Environment | Performance |
|---|---|
| Atmospheric Exposure | Excellent |
| Marine Environment | Excellent |
| Salt Spray Environment | Excellent |
| Industrial Environment | Excellent |
| Chemical Environment | Very Good |
Al5005 offers excellent corrosion resistance, especially in marine and coastal environments. The magnesium content significantly improves durability compared with pure aluminum grades.
International Equivalent Grades
| Standard | Equivalent Grade |
|---|---|
| AA (USA) | AA5005 |
| EN (Europe) | EN AW-5005 |
| DIN (Germany) | AlMg1 |
| JIS (Japan) | A5005 |
| ISO | AlMg1 |
| GB/T (China) | LF5 |
| UNS | A95005 |
Available Tempers
| Temper | Description |
|---|---|
| O | Annealed |
| H14 | Half Hard |
| H16 | Three-Quarter Hard |
| H18 | Full Hard |
| H32 | Strain Hardened & Stabilized |
| H34 | Hard Stabilized |
| H38 | Full Hard Stabilized |
Typical Applications
Architectural Industry
- Curtain Wall Panels
- Architectural Cladding
- Building Facades
- Decorative Panels
- Ceiling Systems
Signage Industry
- Sign Boards
- Advertising Panels
- Illuminated Signs
- Display Systems
Marine Industry
- Interior Marine Components
- Boat Trim Panels
- Coastal Equipment
Electronics Industry
- Electronic Enclosures
- Equipment Housings
- Control Panels
General Manufacturing
- Appliance Panels
- Decorative Components
- Sheet Metal Fabrication
- Reflective Surfaces
Machining Characteristics
| Manufacturing Process | Rating |
|---|---|
| CNC Milling | Good |
| CNC Turning | Good |
| Laser Cutting | Excellent |
| Waterjet Cutting | Excellent |
| Sheet Metal Fabrication | Excellent |
| Deep Drawing | Excellent |
| Bending | Excellent |
| Welding | Excellent |
| Anodizing | Excellent |
Advantages
Excellent Anodizing Quality
Produces highly uniform and attractive anodized finishes.
Outstanding Corrosion Resistance
Suitable for outdoor and marine environments.
Good Strength
Stronger than 1000 and 3000 series aluminum alloys.
Excellent Weldability
Compatible with TIG, MIG, and resistance welding.
Attractive Surface Appearance
Widely used in architectural and decorative applications.
Lightweight
Provides weight reduction compared with steel and stainless steel.
Limitations
Not Heat Treatable
Strength cannot be significantly increased through heat treatment.
Moderate Machinability
Machining performance is lower than 2011 and 6061.
Lower Structural Strength
Not intended for highly loaded structural applications.
Not Suitable for Aerospace Applications
Other alloys such as 2024 and 7075 are preferred for aerospace structures.
Comparison with Other Aluminum Alloys
| Property | Al5005 | Al3003 | Al5052 | Al6061 | Al1100 |
|---|---|---|---|---|---|
| Strength | Medium | Medium | Higher | High | Low |
| Corrosion Resistance | Excellent | Excellent | Excellent | Good | Excellent |
| Weldability | Excellent | Excellent | Excellent | Good | Excellent |
| Anodizing Quality | Excellent | Good | Good | Excellent | Excellent |
| Formability | Excellent | Excellent | Good | Medium | Excellent |
| Machinability | Good | Good | Good | Excellent | Fair |
| Cost | Medium | Low | Medium | Medium | Low |
Comparison with Common Engineering Metals
| Material | Density (g/cm³) | Corrosion Resistance | Strength | Appearance |
|---|---|---|---|---|
| Al5005 | 2.70 | Excellent | Medium | Excellent |
| Al5052 | 2.68 | Excellent | Higher | Good |
| Stainless Steel 304 | 7.93 | Excellent | Medium | Excellent |
| Carbon Steel 1018 | 7.85 | Poor | Medium | Fair |
| Brass C360 | 8.47 | Good | Medium | Excellent |
| Copper C110 | 8.94 | Excellent | Low | Excellent |
Recommended Surface Finishes
- Clear Anodizing
- Black Anodizing
- Bronze Anodizing
- Color Anodizing
- Powder Coating
- PVDF Coating
- Polyester Coating
- Brushing
- Polishing
- Sandblasting
- Laser Marking
- Silk Screen Printing
Frequently Asked Questions (FAQ)
What is Al5005 aluminum?
Al5005 is a magnesium-alloyed aluminum alloy known for excellent corrosion resistance, superior anodizing quality, and attractive architectural finishes.
What is Al5005 used for?
Common applications include:
- Curtain Walls
- Architectural Panels
- Signage
- Decorative Cladding
- Electronic Enclosures
- Marine Components
Is Al5005 better than Al3003?
For architectural applications, yes.
| Property | Al5005 | Al3003 |
|---|---|---|
| Strength | Higher | Lower |
| Corrosion Resistance | Better | Good |
| Anodizing Quality | Excellent | Good |
| Architectural Use | Excellent | Good |
What is the difference between Al5005 and Al5052?
| Property | Al5005 | Al5052 |
|---|---|---|
| Strength | Medium | Higher |
| Corrosion Resistance | Excellent | Excellent |
| Anodizing Appearance | Excellent | Good |
| Architectural Use | Preferred | Less Common |
Al5005 is preferred for decorative and anodized applications, while Al5052 is often selected for higher-strength industrial applications.
Is Al5005 suitable for anodizing?
Yes. Al5005 is considered one of the best aluminum alloys for architectural anodizing because of its uniform finish and color consistency.
Can Al5005 be welded?
Yes. Al5005 offers excellent weldability using TIG, MIG, and resistance welding processes.
Is Al5005 suitable for outdoor applications?
Yes. Its excellent corrosion resistance makes it ideal for long-term outdoor use.
Is Al5005 suitable for marine environments?
Yes. Al5005 performs well in coastal and marine environments, although Al5052 is often preferred for heavy marine-duty applications.
Why is Al5005 commonly used for signage?
Because it combines:
- Excellent Surface Finish
- Uniform Anodizing
- Corrosion Resistance
- Lightweight Construction
making it ideal for architectural and advertising applications.
Does GCNOV provide custom manufacturing services for Al5005?
Yes. GCNOV provides:
- CNC Machining
- Sheet Metal Fabrication
- Laser Cutting
- Bending
- Welding
- Surface Finishing
- Architectural Panel Manufacturing
- Prototype Development
- Low-Volume Production
- Mass Production