5083 0.5mm aluminum plate sheet for marine

5083 0.5mm aluminum plate sheet is a thin, high-strength marine-grade alloy offering excellent corrosion resistance, good weldability, and superior formability. Ideal for shipbuilding, boat decking, marine fittings, and coastal structures, 5083 O/H111 temper in 0.5 mm thickness provides a balance of toughness and workability for marine environments. Available in coils or cut sheets with precise tolerances, it meets common standards such as ISO, ASTM B209 / EN 485. This product page details chemical composition, mechanical properties, temper options, fabrication guidance, surface finishes, and typical applications.

Introduction

5083 is an Al-Mg alloy (5xxx series) widely used in marine and coastal environments due to its excellent resistance to seawater corrosion and stress-corrosion cracking. At 0.5 mm thickness, 5083 plate/sheet is well suited for thin-gauge applications where weight savings, flexibility, and corrosion performance are critical—such as small craft hull panels, trim, decking, and interior components.

Features

• Excellent resistance to seawater and marine atmospheres
• High tensile strength and outstanding toughness, even at sub-zero temperatures
• Good weldability with most common processes (GMAW, GTAW, MIG, TIG)
• Good formability for bending, profiling, and compound forming at thin gauge
• Low density (approx. 2.66 g/cm³) for lightweight constructions
• Available in multiple tempers (O, H111, H32) and surface finishes
• Compatible with marine coatings, anodizing, and adhesive bonding

Typical Applications

• Small boat hull panels and superstructure
• Decking, bulkheads, interiors, and cabinetry on vessels
• Marine fittings and brackets
• Coastal structures and platforms
• Caravan and RV panels where corrosion resistance is required
• Chemical and cryogenic containers (specific tempers)

Product Formats & Supply

• Thickness: 0.5 mm (standard tolerance ±0.03 mm or per customer specification)
• Widths: commonly 1000 mm, 1250 mm, 1500 mm, or cut to size
• Length: coils (for continuous forming) or cut-to-length sheets
• Surface: mill finish, BA (bright annealed), pre-painted (PVDF/FEVE), anodized, or lacquered
• Edge: mill edge, slit edge, or trimmed to custom dimensions
• Packaging: wooden crates, protective film, seaworthy export packing

Chemical Composition (wt%)

(Note: Composition conforms to typical standards such as ASTM B209 / EN 573; exact certified composition provided on Mill Test Certificate.)

Mechanical Properties — Typical (0.5 mm)

(Values are typical; specific lot certificates provide actual measured values.)

Temper Designations & Effects

Standards & Compliance

• Chemical and mechanical properties often conform to:
• ASTM B209 (Aluminum and Aluminum-Alloy Sheet and Plate)
• EN 485 / EN 573 (Aluminium and aluminium alloys)
• ISO 6361 (Wrought Aluminium Sheets, Strips and Plates)
• Mill Test Certificate (MTC) available per EN 10204 3.1 / 2.2 as requested

Fabrication & Welding

• Welding: 5083 welds readily with compatible filler alloys (e.g., 5356 for MIG/TIG). Use proper technique to avoid hot cracking.
• Forming: 0.5 mm thickness allows tight bending radii; follow minimum bend radius recommendations depending on temper. O temper supports the tightest radii.
• Cutting: laser, shearing, waterjet, or plasma cutting are suitable. Use clean tooling and edge protection to avoid burrs.
• Surface treatment: degreasing and surface preparation required before painting or adhesive bonding. Anodizing possible with pre-treatment.
• Corrosion note: avoid contact with dissimilar metals (e.g., carbon steel) without isolation to prevent galvanic corrosion; use insulating layers or coatings.

Corrosion Resistance

5083 demonstrates excellent resistance to seawater, salt spray, and coastal environments. Its chromium and magnesium content confers resistance to pitting and stress-corrosion cracking. However, in chloride-rich environments, appropriate coatings and maintenance extend service life. Avoid prolonged contact with copper or its alloys.

Performance at Low Temperatures

5083 maintains good toughness and mechanical properties at sub-zero temperatures, making it suitable for cold-climate marine or cryogenic applications.

Dimensional Tolerances (Typical)

Surface Finishes

• Mill finish (standard) — smooth metallic finish with light rolling marks
• BA (bright annealed) — improved surface brightness and cleanliness
• Pre-painted (PVDF/FEVE) — for enhanced corrosion protection and color options
• Anodized — for decorative and corrosion-resistant surface
• Protective film — available for scratch protection during handling

Testing & Quality Control

• Chemical analysis (OES or wet chemistry)
• Mechanical testing: tensile, yield, elongation
• Surface inspection: visual & dimensional
• Non-destructive testing (as requested): eddy current, dye-penetrant for critical parts
• Packaging inspection for export-grade shipment

Handling & Storage Recommendations

• Store flat in a dry, ventilated area, off the ground
• Keep protective film on until the final fabrication step
• Avoid stacking with dissimilar metals; use insulating layers if necessary
• Seal edges when exposed to corrosive atmospheres for extended periods

Ordering Information

When ordering, specify:

• Alloy (5083)
• Thickness (0.5 mm)
• Temper (O, H111, H32, etc.)
• Width and length or coil requirement
• Surface finish (mill, BA, pre-painted, anodized)
• Quantity, tolerance class, and any required certifications (MTC EN 10204 3.1)
• Special requirements (edge trim, protective film, packaging)

Frequently Asked Questions (short)

• Is 5083 suitable for hull plating? Yes, especially for small craft and superstructures; thicker gauges are used for primary hull plating on larger vessels.
• Can it be welded? Yes—use proper filler (e.g., 5356) and qualified welding procedures.
• Is 0.5 mm strong enough? For trim, panels, and non-structural components, yes. Structural applications may require thicker gauges.
• How to prevent galvanic corrosion? Use insulating materials, coatings, or sacrificial anodes where dissimilar metals contact seawater.