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Help Center5083 Aluminum Rod H111 Temper 20mm Diameter for Marine Applications
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Welcome to Hemaokang Steel (Shandong) Co., Ltd. – your trusted partner for high-performance aluminum products. Our 5083 Aluminum Rod H111 Temper 20mm Diameter is specifically engineered for demanding marine environments, offering exceptional corrosion resistance and superior strength-to-weight ratio. As a company with an annual export value of US$50-100 million and ISO9001 certification, we guarantee consistent quality and reliable supply. This rod is the ideal choice for shipbuilding, offshore structures, and other saltwater applications where durability and performance are non-negotiable.
Product Features & Benefits
- Marine-Grade 5083 Alloy – Contains magnesium and manganese for outstanding resistance to seawater corrosion, stress corrosion cracking, and pitting.
- H111 Temper – Slightly strain-hardened to improve mechanical strength while maintaining excellent formability and weldability.
- Precise 20mm Diameter – Manufactured to tight tolerances (±0.1mm) for consistent performance in machining and fabrication.
- Versatile Applications – Ideal for propeller shafts, rudder stocks, keel bolts, marine hardware, and structural components.
- Fully Traceable – Each rod comes with mill test certificates and meets ASTM B221 / EN 573 standards.
Technical Specifications
| Parameter | Value |
|---|---|
| Alloy | 5083 (UNS A95083) |
| Temper | H111 |
| Diameter | 20mm (0.787 in) |
| Length | Standard 6,000mm; customizable up to 12,000mm |
| Tensile Strength | ≥ 275 MPa (40 ksi) |
| Yield Strength (0.2% offset) | ≥ 125 MPa (18 ksi) |
| Elongation | ≥ 15% in 50mm |
| Hardness (Brinell) | 75 HB typical |
| Surface Finish | Mill finish (polished available upon request) |
Detailed Description
5083 aluminum is widely recognized as the premier alloy for marine and shipbuilding applications. Its high magnesium content (4.0-4.9%) gives it exceptional resistance to saltwater corrosion, even in tropical environments. The H111 temper provides a balance of strength and ductility, making it suitable for both cold forming and welding without significant loss of mechanical properties.
Our 20mm diameter rods are produced through hot extrusion followed by controlled cooling and straightening. Each rod is inspected for dimensional accuracy, surface defects, and chemical composition. The material is fully compliant with ASTM B221 and EN 573-3. We also offer custom cutting, chamfering, and packaging options to meet your specific production needs.
Key Advantages for Buyers:
- Reduced Downtime – Superior corrosion resistance minimizes maintenance and replacement frequency in harsh marine environments.
- Ease of Fabrication – Excellent machinability, weldability (by TIG, MIG, or resistance welding), and formability reduce production costs.
- Lightweight & Strong – At only 2.66 g/cm³, 5083 offers a high strength-to-weight ratio, improving fuel efficiency in vessels.
- Consistent Supply – With an annual export value of US$50-100 million, we maintain large inventories and short lead times.
Why Choose Hemaokang Steel?
Founded in 2025, we have rapidly grown to serve markets across North America, South America, Europe, Africa, Oceania, and Asia. Our 51-100 dedicated staff ensure rigorous quality control at every stage. We ship from Qingdao Port, one of China's busiest ports, guaranteeing efficient logistics. Our ISO9001:2015 certified management system confirms our commitment to quality. With flexible customization options and responsive customer service, we are your reliable partner for all aluminum rod requirements.
Frequently Asked Questions
-
Q: Can this rod be used in direct contact with seawater?
A: Yes, 5083 aluminum is specifically designed for seawater exposure and is widely used in boat hulls, decks, and piping systems. Its corrosion resistance is excellent, but galvanic isolation is recommended when in contact with dissimilar metals. -
Q: What is the maximum length available?
A: Standard length is 6 meters (20 ft). We can supply custom lengths up to 12 meters (40 ft) upon request. For longer lengths, please consult our sales team. -
Q: Does the H111 temper affect weldability?
A: H111 is slightly strain-hardened, which actually improves weldability compared to fully hardened tempers. Proper filler metal (e.g., ER5183) should be used for optimal results. -
Q: Can you provide mill test certificates?
A: Absolutely. Every shipment includes a mill test certificate (MTC) per EN 10204 3.1, showing chemical composition and mechanical properties. -
Q: What is the minimum order quantity (MOQ)?
A: For stock sizes (20mm diameter), MOQ is 500 kg. For non-standard dimensions or special tempers, MOQ may be higher. Please contact us for detailed pricing. -
Q: How is the rod packaged for export?
A: Rods are bundled with steel strapping, wrapped in waterproof paper, and packed in wooden crates or metal pallets depending on weight. Custom packaging is available for fragile or high-surface-finish requirements. -
Q: Is this product available with anodized or coated finish?
A: While 5083 is typically used in mill finish for marine applications due to its natural oxide layer, anodizing is possible but not recommended for heavy seawater exposure as it may trap moisture. We offer a clear lacquer coating as a temporary protection option. -
Q: What payment terms do you accept?
A: We accept T/T, L/C, and occasional D/P for established clients. For first-time orders, a 30% deposit and 70% against shipping documents is standard.
Trust Hemaokang Steel for your marine aluminum needs. With our ISO9001 certification, global shipping network, and decades of combined industry experience (founded 2025 by experts), we deliver products that perform. Contact us today for a quote or technical consultation. Your success on the water starts with the right materials.
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