5083 Aluminum Plate
5083 Aluminum Plate: Ultra-High Strength Marine-Grade Alloy for Extreme Environments
5083 aluminum plate (UNS A95083) is a non-heat-treatable Al-Mg-Mn alloy containing 4.0-4.9% Mg and 0.4-1.0% Mn, delivering exceptional 317 MPa tensile strength with unmatched seawater corrosion resistance. Certified to ASTM B928 and EN 485-2 standards, this H116/H321-temper alloy achieves 12% minimum elongation and 71 GPa elastic modulus, making it the premier choice for marine structures and cryogenic tanks requiring ≤0.015 mm/year corrosion rates in pH 7.5-8.5 environments. Available in 0.1-120mm thickness (±0.08mm tolerance) with 117 W/m·K thermal conductivity for subzero applications down to -269°C.
Technical Specifications & Certifications
Mechanical Properties:
| Property | Value | Test Standard |
|---|---|---|
| Tensile Strength | 290-345 MPa | ASTM E8/E8M |
| Yield Strength (0.2%) | 145-215 MPa | ISO 6892-1 |
| Elongation (50mm G.L.) | 12-22% | EN 10002-1 |
| Fracture Toughness | 35 MPa√m | ASTM E399 |
Physical Properties:
| Parameter | Value | Application Impact |
|---|---|---|
| Corrosion Rate | 0.010-0.015 mm/year (ASTM G67) | Offshore platforms with 40-year design life |
| Thermal Expansion | 23.4×10⁻⁶/°C | Compatible with Invar alloys (Δα<2%) |
| Electrical Resistivity | 0.0495 μΩ·m | LNG carrier grounding systems |
Certifications: DNV GL Marine Approval, ASME BPVC Section VIII for pressure vessels, and NORSOK M-1201 compliance.
Performance Advantages Over 5052/6061 Alloys
- Stress Corrosion Resistance: 60% higher threshold vs. 5052-H32 in 3.5% NaCl
- Cryogenic Performance: Maintains 25J impact strength at -196°C (LN2 temperatures)
- Weldability: FSW welding with 95% joint efficiency using ER5183 filler
- Cost Efficiency: 18% lower lifecycle cost than titanium in seawater applications
Industrial Applications & Case Studies
5083 aluminum plate is specified for:
- Marine Engineering: Icebreaker hulls (25mm, H321) rated for Arctic -50°C operations
- Energy: LNG storage tanks (40mm, H116) with -162°C operational capability
- Transportation: High-speed ferry decks (8mm, H32) surviving 50-knot wave impacts
- Defense: Submarine pressure hulls (60mm, H117) with 1000m depth rating
Project Highlight: Yamal LNG Project utilized 8,500+ tons of 5083-H116 for containment systems, achieving 30% weight reduction versus duplex stainless steel.
Customization & Quality Assurance
Processing Capabilities:
- Tempers: O, H111, H112, H116, H321, H117
- Surface Treatments: Alodine 1200S chromate conversion (0.5-1.5μm) or 5086-clad
- Cutting Precision: Waterjet (±0.2mm) or plasma arc (±0.8mm)
Testing Protocols:
- UT Inspection: Detects ≥0.5mm flaws per EN 10160 Class S
- SCC Testing: Passes 30-day exposure per ASTM G44
- Chemical Analysis: OES verification of Mg 4.0-4.9% per AMS 4026
Why Choose Our 5083 Aluminum Plates?
Our NADCAP-accredited production ensures ±0.7% thickness consistency and Mg/Mn ratio optimization. With 35,000-ton annual capacity, we guarantee 15-25 day lead times for ABS-certified orders and custom thermal treatments.
Request our free “5083 vs. 6061 Marine Performance Kit” or access third-party DNV test reports for critical offshore projects.
Packaging: VCI film + desiccant packs; 40ft HQ loads 16-18 tons.
Certificates: EN 10204 3.2 with PMI testing documentation.
Packing And Delivery
