Xi'an Dongmeng Group Co., Ltd. is one of the most reliable manufacturers and suppliers of 5059 Aluminum Alloy Plate Sheet Supplier | Marine Grade 5059 Aluminum Manufacturer China in China, also supports customized service. With abundant experience, we warmly welcome you to wholesale cheap products in stock here and get free sample from our factory. For price consultation, contact us.
Aluminum Alloy 5059, also called EN AW-5059 or AlMg5.5Zn, is a high-strength, corrosion-resistant marine-grade aluminum alloy widely used in shipbuilding, defense armor, LNG storage tanks, pressure vessels, and structural engineering. As a premium alloy within the 5xxx aluminum–magnesium family, 5059 aluminum plate offers remarkable weldability, excellent stress-corrosion resistance, and superior mechanical strength compared with 5083 or 5383, making it a preferred material for high-performance marine and industrial applications.
Keywords: 5059 aluminum, 5059 aluminum plate, 5059 aluminum sheet, EN AW-5059, AlMg5.5Zn, marine-grade aluminum plate, armor aluminum alloy.
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5059 Aluminum Alloy Overview
5059 aluminum alloy is a high-magnesium marine-grade aluminum alloy specifically engineered for demanding offshore, naval, military, and transportation applications. Compared with conventional 5xxx series aluminum alloys, 5059 aluminum plate provides significantly improved tensile strength while maintaining excellent seawater corrosion resistance and welding performance.
Due to its outstanding combination of lightweight performance, structural reliability, and anti-corrosion capability, 5059 aluminum alloy sheet is widely used in naval shipbuilding, fast ferries, marine structures, armored vehicles, and offshore engineering systems.
As a professional 5059 aluminum alloy supplier, Xi'an Dongmeng Group Co., Ltd provides export-grade aluminum plates and sheets manufactured according to international marine and industrial standards.
Technical Specifications – Aluminum Alloy 5059
Aluminum Alloy 5059 is a high‑strength, corrosion‑resistant 5xxx series aluminum alloy primarily alloyed with magnesium, offering excellent marine corrosion resistance, weldability, and structural performance. Used widely in marine engineering, shipbuilding, offshore structures, transportation, aerospace, and industrial applications, 5059 aluminum sheet and plate materials deliver outstanding strength‑to‑weight ratios while maintaining formability and durability. We supply AA 5059 aluminum plates, sheets, and custom sizes with global certifications and technical support.
| Property | Specification / Range |
|---|---|
| Alloy | AA 5059 / EN AW‑5059 |
| Series | 5xxx aluminum‑magnesium alloy |
| Main Alloying Element | Mg ~5.0–6.0%, Mn ~0.6–1.2% |
| Density | ~2.66 g/cm³ |
| Physical Properties | Lightweight, low density |
| Mechanical Properties | High tensile strength & yield |
| Temper Options | O, H111, H116, H321, H34, H36 |
| Corrosion Resistance | Excellent, especially in marine environments |
| Weldability | Excellent (MIG / TIG compatible) |
| Formability | Good to very good depending on temper |
| Standard | AA / ASTM B209 / EN |
| Typical Forms | Sheet, Plate, Coil |
| Surface | Mill / Polished / Customized |
| Certifications | ISO / MTR / PMI available |
Chemical Composition (EN 573 Standard)
| Element | Percent (%) |
|---|---|
| Magnesium (Mg) | 5.0–6.0 |
| Manganese (Mn) | 0.40–1.0 |
| Zinc (Zn) | 0.20–1.0 |
| Chromium (Cr) | ≤0.30 |
| Titanium (Ti) | ≤0.15 |
| Iron (Fe) | ≤0.40 |
| Silicon (Si) | ≤0.30 |
| Copper (Cu) | ≤0.25 |
| Aluminum (Al) | Balance |
Mechanical Properties
| Temper | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) |
|---|---|---|---|
| O | 260–320 | 120–160 | 17–22 |
| H116 | 330–400 | 230–280 | 12–16 |
| H321 | 340–410 | 240–300 | 12–16 |
| H111 | 300–360 | 150–200 | 14–18 |
Physical Properties
| Property | Value |
| Density | 2.66 g/cm³ |
| Melting Point | Approx. 570 – 640°C |
| Thermal Conductivity | 130 W/m·K |
| Electrical Conductivity | 34% IACS |
| Thermal Expansion | 23.8 μm/m·K |
Aluminum Alloy 5059
| Form | Size / Dimensions | Thickness / Diameter | Width | Length | Standard / Grade | Surface Finish | Typical Applications |
|---|---|---|---|---|---|---|---|
| Aluminum Rod / Bar | Round: Ø10–300 mm (0.39–11.8")Square: 10–200 mm (0.39–7.87")Hex / Custom Section: 10–150 mm (0.39–5.9") | – | – | 1–6 m (3.3–19.7') | EN AW-5059 / ASTM B221 | Mill, Polished, Anodized | Marine structural components, machinery shafts, armor parts |
| Aluminum Plate / Sheet | 4–200 mm (0.157–7.87") | 4–200 mm | 1000–3000 mm (39–118") | 2000–12000 mm (78–472") | EN AW-5059 / ASTM B928 | Mill, Polished, Brushed, Anodized, Tread Plate | Ship hulls, offshore structures, industrial tanks, armor panels |
| Aluminum Coil / Strip | Coil thickness: 1–10 mm (0.039–0.39")Strip width: 20–500 mm (0.78–19.7") | 1–10 mm | 500–2000 mm (20–78") | Coil length: Custom | EN AW-5059 / ASTM B209 | Mill, PE protective film, Anodized | Automotive panels, marine applications, industrial fabrication |
| Aluminum Tube / Pipe | OD: 10–300 mm (0.39–11.8")ID: 5–295 mm (0.2–11.6") | 2–30 mm (0.08–1.18") | – | 1–6 m (3.3–19.7') | EN AW-5059 / ASTM B210 / ASTM B221 | Mill, Polished, Anodized | Marine piping, structural supports, industrial fluid transport |
Key Features & Advantages
✔ Marine-Grade Corrosion Resistance
Superior performance in seawater, brine, and chloride environments.
✔ Higher Strength than 5083
Improved tensile and yield strength-ideal for lightweight structural components.
✔ Exceptional Weldability
Suitable for MIG, TIG, friction-stir welding with minimal loss of strength.
✔ Excellent Impact Resistance
Commonly used in naval armor and protective structures.
✔ Stress-Corrosion & Cracking Resistance
Strong resistance against SCC, exfoliation, and fatigue.
✔ Lightweight yet High Load-Bearing Capability
Ideal for replacing steel in heavy-duty applications for weight reduction.
Applications of Aluminum Alloy 5059
Marine & Offshore
Ship hulls and superstructures
High-speed vessels, patrol boats
LNG and chemical tank walls
Offshore platforms
Defense & Aerospace
Vehicle armor plates
Naval armor systems
Lightweight structural shields
Industrial & Structural
Pressure vessels
Bridges & welded structures
Cryogenic equipment
Heavy-duty machinery components
5059 vs 5083 Aluminum Alloy Performance Comparison
| Feature | 5059 | 5083 |
|---|---|---|
| Magnesium Content | Higher (~5.0–6.0%) | Lower (~4.0–4.9%) |
| Tensile Strength | Higher (H116 ~370–440 MPa) | Lower (~305–385 MPa) |
| Weldability | Excellent | Good |
| Corrosion Resistance | Excellent | Good |
| Best Suitability | High‑load marine / structural | General marine / storage |
Inspection & Quality Assurance
We implement strict quality management throughout the entire supply chain:
100% raw-material traceability
Ultrasonic inspection (UT) Level A/B according to EN/ASTM
Mechanical property testing (UTS, YS, elongation)
Corrosion testing & metallographic analysis
Third-party inspection available: SGS, BV, ABS, DNV, LR
Precise dimensional control for global engineering standards
Machining Performance Analysis
5059 aluminum alloy demonstrates stable machining characteristics suitable for CNC milling, precision cutting, drilling, and heavy structural fabrication. Due to its high magnesium content, proper tooling and coolant management are recommended to achieve optimal surface finish and dimensional accuracy.
Compared with traditional marine aluminum alloys, 5059 alloy offers:
Better structural rigidity
Reduced deformation during machining
Improved strength-to-weight ratio
Excellent fabrication stability
Our factory supports custom CNC processing services for marine aluminum components, precision-cut plates, and heavy structural panels.
Welding Performance Analysis
One of the major advantages of 5059 marine grade aluminum is its exceptional weldability. The alloy performs excellently in MIG and TIG welding applications and maintains high post-weld structural integrity.
Benefits include:
Reduced welding crack sensitivity
High welded joint strength
Excellent marine structural reliability
Stable heat-affected zone performance
5059 alloy is particularly suitable for large welded marine structures such as ship hulls, decks, naval systems, and offshore platforms.
Corrosion Resistance Analysis
5059 aluminum alloy is specifically designed for harsh marine and offshore environments. Its high magnesium composition provides outstanding resistance against:
Seawater corrosion
Salt spray exposure
Marine atmosphere oxidation
Industrial humidity environments
Compared with standard structural aluminum alloys, 5059 aluminum sheet delivers significantly improved long-term durability in aggressive chloride-rich environments.
This makes it a preferred material for:
Naval engineering
Offshore platforms
Marine transportation systems
Coastal infrastructure
Production Capacity
Xi'an Dongmeng Group Co., Ltd maintains advanced aluminum processing capabilities for large-scale export orders.
Manufacturing Capabilities
Heavy plate rolling production
Precision leveling systems
CNC cutting centers
Ultrasonic testing systems
Automated packaging lines
Monthly Supply Capacity
Aluminum Plate: 5,000+ Tons
Aluminum Sheet: 3,000+ Tons
CNC Processing Services Available
Inspection & Quality Assurance
Quality control is implemented throughout the entire manufacturing process to ensure international export compliance.
Inspection Procedures
Chemical composition analysis
Mechanical property testing
Ultrasonic flaw detection
Flatness inspection
Surface quality inspection
Dimensional tolerance verification
Quality Certifications
ISO Quality Management System
Third-party inspection support
SGS / BV / TUV inspection available
Mill Test Certificates (MTC EN 10204 3.1)
Whether you are building marine vessels, offshore structures, armored systems, or large industrial equipment, our team provides professional technical support, rapid quoting, material selection guidance, and export documentation assistance.
Tell us your project specifications, drawings, or required standards, and we will provide the best-price solution and fastest delivery for Aluminum Alloy 5059 plates and sheets.
Our address
Room 4107, Runfeng Building, Sanqiao New Street, Weiyang District, Xi'an City, Shaanxi Province
Phone Number
+86 15769214734
FAQ
1. What are the main advantages of 5059 compared to 5083 and 5454?
5059 offers higher tensile and yield strength, superior stress-corrosion resistance, and better high-temperature performance than 5083. Compared to 5454, it provides higher mechanical strength while maintaining excellent corrosion resistance.
2. Is 5059 suitable for marine applications?
Yes. 5059 is a marine-grade aluminum alloy with exceptional resistance to seawater corrosion, pitting, and stress-corrosion cracking, making it ideal for ship hulls, offshore platforms, and high-speed vessels.
3. Can 5059 aluminum be welded without losing strength?
Yes. 5059 has excellent weldability (TIG, MIG, friction stir welding). After proper welding, the material retains a high level of mechanical strength, especially in H32 or H116 temper.
4. What tempers are available for 5059 aluminum?
Common tempers include O (soft annealed), H111, H116, H321, H32, H24. Each temper balances strength, ductility, and corrosion resistance for specific applications.
5. Can 5059 be used in high-temperature or cryogenic applications?
Yes. 5059 maintains mechanical stability at elevated temperatures (up to ~150–200°C) and excellent toughness at low temperatures, suitable for cryogenic tanks or heat-exposed components.
6. What are the typical forms available for 5059 aluminum?
5059 is available as sheet, plate, coil, strip, rod/bar, and tube/pipe, with custom diameters, widths, and thicknesses per project requirements.
7. Which standards do 5059 products comply with?
5059 aluminum plates, sheets, and coils can meet EN 485, EN 573, ASTM B209, ASTM B928, ASTM B221, GB/T 3880, with MTC EN10204 3.1 or third-party certification (SGS, BV, ABS, DNV, LR) available.
8. Can 5059 aluminum be anodized or surface-treated?
Yes. It is compatible with clear anodizing, color anodizing, powder coating, brushing, polishing, and PE protective films.
9. What are the typical lead times for 5059 aluminum?
Standard stock sizes: 7–12 days
Custom thickness, width, temper, or form: 15–25 days depending on production and processing.
10. Is 5059 suitable for structural and armor applications?
Yes. Its high strength, excellent impact resistance, and corrosion resistance make it ideal for naval armor, military vehicles, industrial tanks, and high-strength structural components.
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