H111 5083 alloy aluminum plate
When it comes to aluminum materials that combine exceptional strength, corrosion resistance, and workability, the H111 5083 alloy aluminum plate stands out as a reliable choice. Whether you’re in marine construction, transportation, or industrial manufacturing, the nuanced properties of the H111 temper applied to 5083 aluminum plates unlocks the potential of this high-magnesium alloy.
What Is the 5083 Alloy and Why H111 Temper?
5083 aluminum belongs to the non-heat-treatable series of aluminum-magnesium (Al-Mg) alloys, famous for their superior corrosion resistance and good weldability. Primarily used where extra resistance to seawater and extreme conditions is required, 5083 sets itself apart with high strength without sacrificing good formability.
The "H111" in the 5083 alloy refers to a specific temper treatment. The aluminum is strain-hardened—meaning it’s cold worked slightly—to achieve a controlled balance of mechanical strength instead of being fully annealed or heavily cold-worked. This condition ensures uniform mechanical properties through the thickness of the plate, enhancing ductility and impact resistance, suitable for heavy-duty structural uses.
In other words, H111 is a ‘halfway stop’ temper: it is not as soft as annealed (O temper) nor as hard or brittle as heavily cold-worked tempers like H321. This subtle tempering method is essential for applications needing moderate strength combined with excellent medium formability.
Alloy Chemical Composition – Safety Threshold Limits
Here’s a typical chemical composition profile complying to international standards such as ASTM B209:
| Element | Percentage (%) Range |
|---|---|
| Magnesium (Mg) | 4.0 – 4.9 |
| Chromium (Cr) | 0.05 – 0.25 |
| Manganese (Mn) | Max 0.4 |
| Iron (Fe) | Max 0.4 |
| Silicon (Si) | Max 0.4 |
| Copper (Cu) | Max 0.1 |
| Zinc (Zn) | Max 0.25 |
| Titanium (Ti) | Max 0.15 |
| Aluminum (Al) | Balance |
These alloy elements besides aluminum contribute to enhanced mechanical and corrosion properties:
- Magnesium boosts strength and corrosion resistance, fundamental for marine-grade metal.
- Chromium assists in controlling grain structure and preventing corrosion.
- Other trace elements are kept low to minimize impurities and maintain performance integrity.
Mechanical Properties under H111 Temper
The strain-hardened but not overly hardened H111 temper offers a mix of toughness and reasonably high strength:
| Property | Typical Values | Unit |
|---|---|---|
| Tensile Strength (UTS) | 230 – 290 (often around 275) | MPa |
| Yield Strength | 145 – 200 | MPa |
| Elongation at Break | ≥12 | % |
| Density | ~2.66 | g/cm³ |
| Hardness (Brinell) | ~70-90 | HB |
The fairly high elongation illustrates why H111 tempered 5083 aluminum plates excel where deformation during assembly is needed without cracking.
Industry Standards and Implementation
This alloy and temper combination complies with many international standards for aluminum plates in structural and marine use:
- ASTM B209: Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate
- EN 485-2 & EN 573-3: European Standards for aluminum alloys chemical composition and mechanical properties
- ISO 6361: Aluminum and aluminum alloy sheets, strips and plates
Using H111 5083 compliant plates guarantees a product you can trust for structural integrity under heavy service loads and environmental exposure. It fits applications such as hulls of ships and offshore structures, transportation vehicles like trailers and tankers, roofs, and pressure vessels where safety meets durability.
Distinctive Benefits of Choosing H111 5083 Aluminum Plate
- Excellent corrosion resistance even in saltwater environments—perfect when longevity is critical.
- Moderate strength and excellent toughness keep structural partners safe without becoming brittle.
- Good weldability enables fabrication of large elements via MIG or TIG weld without significantly affecting performance.
- Thermal stability: limited strength variation under moderate temperature changes makes it viable for outdoor applications.
- Workable surface finish ensures compatibility for parts requiring painting or anodizing.
Closing Thoughts
More than just an aluminum sheet, H111 5083 alloy aluminum plates represent a thoughtfully balanced engineering choice. The delicately calibrated H111 temper tempering—emphasizing resilience and ductility—unlocks their versatile performance for demanding industrial, marine, and structural roles. these practitioners' temper-treatment foundations allows engineers and designers alike to fully lean into the unique strengths of 5083 aluminum for reliable, long-lasting builds that stand up even in highly corrosive or mechanically challenging environments.
Choosing H111 5083 is opting for a smart marriage of formability, rust-resistance, and moderate high strength, an industry-based ideal whenever you require heavy-duty aluminum without excess hardness or unexpected material failures.
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