Classification society certification is a high barrier to entry into the marine aluminum plate sector. GNEE 5083 Marine Aluminum Sheet has passed Bureau Veritas' (BV) stringent certification due to its superior corrosion resistance, high strength, and steady process performance, making it the chosen material for global high-end shipbuilding.
| Alloy Grade | Product | Metallurgical condition | Range thickness/width |
| 5083 | Cold-rolled sheets | O, H111, H112, H116, H321 | Thickness from 3 mm to 6 mm, width up to 2200mm |
| 5083 | Hot-rolled plates | O, H111, H112, H116, H321 | Thickness from 6 mm to 40 mm, width up to 2500mm |
5083 Aluminum Plate Corrosion Resistance
1. Marine Environment Adaptability
Passed 3000 hours of neutral salt spray testing (ASTM B117) and greatly exceeded industry norms.
Pitting Resistance: Annual corrosion rate of <0.02mm in 3.5% NaCl solution
Stress Corrosion Cracking (SCC) Resistance: Optimized for H116/H321 conditions, appropriate for welded constructions.
2. Typical Corrosion Data Comparison
| Environmental Conditions | Annual Corrosion Depth of 5083 Aluminum Plate (mm) | Annual Corrosion Depth of Ordinary Mild Steel (mm) |
|---|---|---|
| Seawater Immersion | <0.03 | 0.1~0.3 |
| Marine Atmosphere | <0.01 | 0.05~0.15 |
| High Temperature and High Humidity | <0.02 | 0.2~0.5 |
Why choose GNEE BV-certified 5083 aluminum plate?
Quality control throughout the entire process.
100% composition testing using a spectrometer (Mg content accurately controlled at 4.0–4.9%)
BV-certified 3.1 Material certificates are provided for each batch.
Professional shipbuilding plate manufacturing line:
Equipped with a German SMS hot rolling mill (thickness tolerance ±0.05mm).
Fully automated quenching and aging production process (to ensure stable H116 performance).
5083 Aluminum Plate Specifications
| Item | Details |
|---|---|
| Thickness | 0.3 – 200 mm |
| Width | 100–2500 mm |
| Length | Customizable |
| Mother Coil | CC (Continuous Casting) or DC (Direct Casting) |
| Weight | About 2 MT per pallet for general size |
| Protection | Paper interlayer, white film, blue film, black-white film, micro-bound film, or as required |
| Surface | Clean and smooth, free from bright specks, corrosion, oil stains, slots, etc. |
| Standard | GB/T 3880, JIS H4000, EN 485, ASTM B209 |
