5086 O aluminum plate sheet
The 5086 O aluminum plate is an aluminum-magnesium alloy that combines excellent corrosion resistance, good formability, and weldability. If your working environment requires materials that can resist seawater or chemical corrosion, and the manufacturing process involves significant bending, stamping, or other cold working, then the 5086-O aluminum plate is a highly recommended choice.
With its combination of high corrosion resistance, easy weldability, and medium strength, the 5086 O aluminum plate has become a core material in marine engineering, energy equipment, transportation, and other fields. Its O temper characteristics are especially suitable for parts requiring complex forming, and applications can be further expanded through cold working or surface treatments. When selecting, it is necessary to weigh the differences with alloys such as 5052 and 5083 based on specific working conditions (such as corrosion environment and strength requirements) to achieve the optimal cost-performance ratio.
What does O mean in aluminum?
The meaning of "O temper": it refers to the annealed condition. This is a heat treatment process in which the alloy is heated to a certain temperature and then slowly cooled, intended to completely eliminate internal stresses generated during previous processing.
"O" aluminum alloys undergo full annealing, which softens the material, making it more ductile and improving its formability in cold working processes such as bending or shaping.
After annealing, the internal structure of the 5086 aluminum plate becomes very uniform and stable. This makes it the softest and most ductile state, resulting in excellent formability, making it ideal for deep drawing, bending, and other complex cold working operations.
The 5086 O aluminum plate is a typical supply condition of 5086 aluminum alloy (O temper indicates annealed condition). The material is soft and easy to stretch, stamp, or shape, and the surface can be treated to a mirror or patterned finish.
Compared with cold-worked conditions such as H111 or H32, 5086 O aluminum has lower strength. It is renowned for its outstanding corrosion resistance, especially in marine environments, making it suitable for applications where flexibility and corrosion resistance are more important than high strength.
| Property Category | Description of 5086-O Aluminum Plate |
| Material Condition | O temper (annealed) |
| Key Features | High corrosion resistance (especially seawater), excellent formability, good weldability, medium strength |
| Chemical Composition | Magnesium (Mg) 3.5%-4.5%, Manganese (Mn) 0.2%-0.7%, Chromium (Cr) 0.05%-0.25%, Aluminum (Al) balance |
| Mechanical Properties (Typical Values) | Tensile Strength ≥240 MPa, Yield Strength ≥95 MPa, Elongation ≥10%-12% |
| Physical Properties | Density approximately 2.66 g/cm³ |
| Main Applications | Shipbuilding (hulls, decks), automotive sheets, pressure vessels, refrigeration equipment, transportation equipment, etc. |
5086 O Aluminum Plate Sheet Features
- Excellent corrosion resistance: Thanks to the high magnesium content, 5086 aluminum plates have outstanding resistance to seawater and marine atmospheric environments, which is a key reason for their wide use in shipbuilding and marine engineering.
- Superior weldability: Supports MIG/TIG welding, laser welding, and other processes. The weld strength is close to that of the base metal, with minimal corrosion loss. It is recommended to use 5183 welding wire.
- Medium strength and high toughness: Lower than H111, H32, and H116 conditions, with further strength improvement at low temperatures (e.g., -196℃).
- Cannot be strengthened by heat treatment: Strength is mainly improved through cold working (e.g., H32 temper). Annealing can restore ductility.
- Formability: O temper has excellent cold working properties, giving it very high formability.
- Heat treatment characteristics: Cannot undergo strengthening heat treatment; strength increases with cold working.
Mechanical Properties of 5086 O Aluminum Plate Sheet
- Strength: Low
- Ductility: High, allowing significant deformation without cracking.
- Hardness: Minimum hardness, providing high machinability.
Advantages of 5086 O Aluminum Plate Sheet
- Formability: Excellent, easier to shape and form.
- Machinability: High, due to the soft nature of the material.
- Stress Relief: Reduces internal stresses from prior processing.
When selecting 5086-O aluminum plates, in addition to the above advantages, it is also necessary to understand its limitations. For example, compared to some other aluminum alloys (such as 6061), its machinability may be slightly inferior.
5086 O aluminum Chemistry Information
| Element | Percentage |
| Al | 95.4 |
| Cr | 0.05 - 0.25 |
| Cu | 0.1 max |
| Fe | 0.5 max |
| Mg | 3.5 - 4.5 |
| Mn | 0.2 - 0.7 |
| Zn | 0.25 max |
| Si | 0.4 max |
5086 O aluminum plate sheet Physical Properties
| Property | Metric | Imperial |
| Density | 2.66 g/cc | 0.0961 lb/in³ |
| Melting Point | 585-641°C | 1085-1185°F |
5086 O aluminum plate sheet Thermal Properties
| Property | Metric | Imperial |
| CTE, linear 68°F | 23.8 µm/m-°C | 13.2 µin/in-°F |
| CTE, linear 250°C | 25.8m/m-°C | 14.3 µin/in-°F |
| Specific Heat Capacity | 0.9 J/g-°C | 0.215 BTU/lb-°F |
| Thermal Conductivity | 125W/m-K | 870TU-in/hr-ft²-°F |
| Solidus | 585°C | 1085 °F |
| Liquidus | 641°C | 1185 °F |
Applications of 5086 O Aluminum Plate Sheet
- Marine engineering: Ship/yacht hulls, decks, pressure vessels, due to its seawater corrosion resistance and excellent weldability.
- Energy and chemical industry: LNG tanks (resistant to -162℃), chemical pipelines, reactors.
- Transportation: Structural components for railway vehicles, tank trucks, refrigerated vehicle floors, lightweight while maintaining strength and corrosion resistance.
- Construction and decoration: Curtain walls, roofs, balcony railings, strong weather resistance, suitable for anodizing and coloring.
- Military equipment: Armor plates, military vehicle components, combining corrosion resistance with bulletproof performance.
- Special requirements: Pressure vessels, refrigeration units, missile parts, and other scenarios with strict fire and corrosion resistance requirements.
Comparison of 5086 O with Similar Alloys
- Strength: 5083 O > 5086 O > 5052 O.
- Corrosion resistance: 5086 O is comparable to 5083 O, both better than 5052 O.
- Cost: 5052 O < 5086 O < 5083 O.
| Alloy | 5086O | 5052O | 5083O |
| Seawater Corrosion Resistance | Excellent | Good | Excellent |
| Weldability | Excellent (high weld strength) | Good | Excellent (requires specialized welding wire) |
| Typical Applications | Ships, pressure vessels, low-temperature equipment | Automotive parts, general containers | Offshore platforms, high-strength structures |
5086 O Aluminum Alloy Product Forms
- 5086 O Sheet & Plate: For hulls, panels, and marine structures.
- 5086 O Foil & Rolled Products: For decorative or corrosion-resistant applications.
- 5086 O Profiles & Extrusions: Where complex shapes are needed.
5086 O Aluminum Plate Sheet Processing
- Heat Treatment: Annealing process
- Purpose: To relieve internal stresses and enhance softness and ductility.
- Result: Maximum softness and ease of deformation.
Notes
- Stress Corrosion Cracking (SCC): Use with caution in high-temperature environments containing chlorides; avoid long-term tensile stress.
- Cold Working Hardening: For higher strength, H32 (1/4 hard) or H34 (1/2 hard) temper can be chosen, but ductility will be partially sacrificed.
- Storage Conditions: Avoid direct contact with humid air; it is recommended to store in a dry environment with moisture-proof packaging.
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