AH36/DH36/EH36 High-Strength Marine Steel Plates
Product Overview
AH36, DH36, and EH36 are advanced high-tensile shipbuilding steels certified by leading classification societies (ABS, DNV, CCS, LR, etc.). Designed for demanding marine environments, these grades deliver exceptional strength, low-temperature toughness, and corrosion resistance, making them ideal for critical ship structures and offshore platforms.
Manufacturing Excellence
- Controlled Rolling & Cooling (TMCP): Ensures uniform mechanical properties and eliminates preheating for plates ≤30mm
- Heat Treatment: Normalizing or quenching for thickness >50mm to enhance weldability
- Surface Treatment: Shot blasting (SA 2.5 finish) and anti-rust painting for corrosion resistance
Applications
- Shipbuilding: Hulls, decks, bulkheads (AH36); LNG carrier components (EH36); icebreaker vessels (DH36)
- Offshore Engineering: Oil rigs, subsea pipelines (DH36/EH36)
- Infrastructure: Bridges, pressure vessels, and high-rise steel structures
Certifications & Standards
- Classification Societies: ABS, DNV, CCS, LR, BV, NK, KR, RINA, and others
- Testing Protocols:
- Ultrasonic inspection for internal defects.
- Charpy V-notch impact tests at specified temperatures
- CTOD (Crack Tip Opening Displacement) tests for critical applications
Customization & Dimensions
- Thickness: 5–150mm (up to 300mm for special orders)
- Width: Up to 3,900mm (ideal for large hull sections)
- Processing: Flame cutting, laser cutting, and bending (cold/hot)
Welding & Fabrication Guidelines
- Preheating Requirements:
- Plates >30mm: Preheat to 120–150°C before welding
- Ambient Temp <5°C: Preheat to 75°C for plates ≤30mm
- Welding Methods: SMAW, SAW, and FCAW with compatible electrodes
Industry Trends & Advantages
- High-Strength Demand: Rising use of 5m-wide plates and 200–300mm thick boards for mega-container ships and polar-class vessels
- Sustainability: Reduced material consumption due to higher strength-to-weight ratios
Why Choose AH36/DH36/EH36?
- Certified Quality: Globally recognized by 10+ classification societies
- Extreme Environment Performance: EH36 withstands -40°C, DH36 excels in Arctic condition
- Cost Efficiency: Thinner plates reduce weight while maintaining strength
- End-to-End Support: Mill test reports, Z-certification, and custom packaging
Contact us for technical datasheets or tailored solutions.
Built for the harshest seas, trusted by global shipyards.
