5083 Aluminum Plate for LNG Storage Tanks

High-Strength & Cryogenic-Resistant Material for Energy Industry LNG (Liquefied Natural Gas) storage tanks operate in extreme low-temperature environments (-162°C) and require materials with exceptional **cryogenic toughness**, **corrosion resistance**, and **structural stability**. **5083 aluminum plate for LNG storage tanks**—a 5-series magnesium-aluminum alloy—stands out for its outstanding performance in low temperatures, making it a core material for LNG terminals, transport vehicles, and onshore storage facilities. Henan Mingtai Al. Co, Ltd. (stock code: 601677), a leading aluminum processor with over 20 years of experience, produces high-quality 5083 aluminum plates that meet the strict standards of the LNG industry.

1. Core Advantages of 5083 Aluminum Plate for LNG Storage Tanks

5083 aluminum plate (with 4.0-4.9% magnesium content) is engineered to address the unique challenges of LNG storage, offering three critical advantages:

Exceptional Cryogenic Toughness to Avoid Brittle Fracture: At -162°C, most metals become brittle, but 5083 aluminum plate retains excellent toughness. Its impact energy absorption (Charpy V-notch test) is ≥25 J at -196°C, far exceeding the industry requirement of 15 J. This prevents brittle fracture caused by temperature fluctuations or external impacts—critical for the safety of LNG tanks. Mingtai’s 5083 aluminum plate undergoes strict low-temperature treatment, ensuring uniform grain structure and consistent toughness across the entire plate.

Superior Corrosion Resistance for Harsh Environments: LNG storage tanks (especially offshore terminals) are exposed to saltwater, humidity, and LNG vapor. 5083 aluminum plate forms a dense magnesium-aluminum oxide layer that resists pitting, crevice corrosion, and stress corrosion cracking. It passes 2000-hour salt spray tests with no visible corrosion, and its compatibility with anti-corrosion coatings further extends service life to 20+ years. Unlike carbon steel, it requires no frequent rust removal or maintenance.

High Strength-to-Weight Ratio for Structural Efficiency: LNG tanks need to withstand internal pressure (up to 1.6 MPa) while minimizing weight. 5083 aluminum plate has a tensile strength of 300-350 MPa and a density of only 2.66 g/cm³—34% lighter than steel. Using 5083 aluminum plate reduces the tank’s self-weight by 30-40%, lowering construction and transportation costs. For example, an onshore LNG tank made with 5083 aluminum plate can save 500+ tons of structural weight compared to a steel tank of the same capacity.

2. Key Applications of 5083 Aluminum Plate in LNG Storage Tanks

5083 aluminum plate’s versatility supports multiple critical components of LNG storage systems:

LNG Tank Inner Liners: The inner liner directly contacts LNG and requires extreme low-temperature resistance. 5083 aluminum plate’s cryogenic toughness ensures it remains intact at -162°C, preventing LNG leakage. Its smooth surface (Ra ≤0.4μm) also reduces LNG adhesion, facilitating cleaning and maintenance.

Tank Shell & Reinforcement Rings: The outer shell and reinforcement rings bear structural loads (e.g., wind, seismic forces). 5083 aluminum plate’s high strength and fatigue resistance (can withstand 10,000+ pressure cycles) ensure long-term structural stability, even in harsh weather conditions.

LNG Transport Tank Containers: For road or rail LNG transport tanks, 5083 aluminum plate’s lightweight design reduces fuel consumption by 15-20% compared to steel tanks. Its corrosion resistance also eliminates maintenance costs for anti-rust treatments during long-distance transportation.

3. Mingtai Aluminum: Reliable Supplier of 5083 Aluminum Plate for LNG Storage Tanks

Mingtai’s production capabilities and quality control systems meet the rigorous demands of the LNG industry:

Advanced Production Lines for Cryogenic-Grade Plates: Mingtai owns the domestic first “1+4” hot rolling line, CVC 6-roller cold rolling mills, and precision annealing furnaces. These equipments produce 5083 aluminum plate with ultra-uniform thickness (tolerance ±0.05mm) and flatness (≤2mm/m), eliminating defects like warping or inclusions that could compromise tank safety.

Strict Quality Control for Low-Temperature Performance: With 600+ professional technical personnel, Mingtai conducts 100% inspections on 5083 aluminum plate, including cryogenic impact testing, corrosion resistance testing, and ultrasonic flaw detection. All products comply with ASTM B209, EN 485, and LNG industry standards (e.g., BS EN 1473), ensuring compatibility with global LNG projects.

Eco-Friendly Production & Efficient Supply: Mingtai uses recycled aluminum (with harmless aluminum slag treatment) to manufacture 5083 aluminum plate, reducing carbon emissions by 18%—aligning with the energy industry’s green transition goals. Its 5 production bases and 6000+ employees enable large-scale order fulfillment (100-10,000 tons) with delivery times as short as 5-40 days, supporting tight LNG project schedules.

4. Why 5083 Aluminum Plate Outperforms Alternatives for LNG Storage Tanks

Compared to other materials like 304 stainless steel, 6061 aluminum, or carbon steel, 5083 aluminum plate has unique advantages:

Better Cryogenic Toughness Than 304 Stainless Steel: 304 stainless steel becomes brittle at -100°C, while 5083 aluminum plate retains toughness at -196°C—making it suitable for LNG’s ultra-low-temperature environment.

Higher Strength Than 6061 Aluminum: 6061 aluminum has lower tensile strength (276 MPa) and poor cryogenic performance, requiring thicker plates for LNG tanks. 5083 aluminum plate’s higher strength allows for thinner designs, reducing weight and cost.

Lighter & Lower-Maintenance Than Carbon Steel: Carbon steel is heavy and prone to corrosion, requiring thick anti-corrosion coatings and frequent maintenance. 5083 aluminum plate’s lightweight and corrosion resistance reduce both initial and long-term costs.

Contact Mingtai for 5083 Aluminum Plate for LNG Storage Tanks

If you need high-quality 5083 aluminum plate for LNG storage tank projects, Mingtai Aluminum is your trusted partner. We offer customized specifications (thickness 6-50mm, width 1200-3300mm) and technical support to meet your specific low-temperature and structural requirements.

Email: sales@mingtai-al.com

Whatsapp/Wechat: +86-17760728273

Website: www.mingtai-al.com