CCS AH36 Marine Steel Plate

‌AH36-DH36-EH36-FH36 Marine Steel Plates: High-Strength, Low-Temperature Shipbuilding Solutions.‌ ‌Certified for Harsh Marine & Subzero Environments‌ Marine steel plates are specialized alloys engineered to withstand saltwater corrosion, heavy dynamic loads, and extreme temperatures. Grades AH36 to FH36, approved by 9 global classification societies, offer yield strengths up to 355 MPa and impact toughness as low as -60°C. These plates are ideal for ice-class vessels, Arctic offshore platforms, and cryogenic storage tanks.

Our Factory

OUR-ADVANTAGE

Partners

Honors and Clients

APPLICATION-SCENARIOS

Send Us Email​

Product Introduction

‌AH36-DH36-EH36-FH36 Marine Steel Plates: High-Strength, Low-Temperature Shipbuilding Solutions.‌

‌Certified for Harsh Marine & Subzero Environments‌

Marine steel plates are specialized alloys engineered to withstand saltwater corrosion, heavy dynamic loads, and extreme temperatures. Grades AH36 to FH36, approved by 9 global classification societies, offer yield strengths up to 355 MPa and impact toughness as low as -60°C. These plates are ideal for ice-class vessels, Arctic offshore platforms, and cryogenic storage tanks.


‌Key Features & Certifications‌

  • ‌9 IACS-Approved Societies‌: ABS, BV, CCS, DNV, GL, KR, LR, NK, RINA
  • ‌Ultra-Low Carbon (≤0.18%)‌: Reduces weld brittleness and hydrogen cracking risks^[EN 10025]^
  • ‌Micro-Alloy Enhanced‌: Niobium (Nb), Vanadium (V), and Titanium (Ti) refine grain structure for fatigue resistance^[ASTM A131]^

‌Technical Specifications‌

‌Chemical Composition (Max Wt%)‌

Grade C Si Mn P S Al
AH36 0.18 0.50 1.60 0.035 0.035 0.015
DH36 0.18 0.50 1.60 0.035 0.035 0.015
EH36 0.18 0.50 1.60 0.035 0.035 0.015
FH36 0.18 0.50 1.60 0.035 0.035 0.015

‌Alloy Benefits‌:

  • ‌Niobium (0.03% max)‌: Improves grain refinement during controlled rolling (TMCP).
  • ‌Manganese (0.9–1.6%)‌: Enhances tensile strength and crack resistance.
  • ‌Low Sulfur (0.035%)‌: Minimizes porosity in submerged arc welding (SAW).

‌Mechanical Properties‌

Grade Yield Strength (MPa) Tensile Strength (MPa) Elongation (%) Impact Test Temp (°C) Charpy V-Impact (J)
AH36 ≥355 490–630 ≥21 0 34
DH36 ≥355 490–630 ≥21 -20 34
EH36 ≥355 490–630 ≥21 -40 34
FH36 ≥355 490–630 ≥21 -60 34

‌Performance Highlights‌:

  • ‌630 MPa Tensile Strength‌: Exceeds standard Grade A steel by 28%^[IACS UR W11]^.
  • ‌-60°C Toughness (FH36)‌: Certified for polar icebreakers and LNG carrier hulls.
  • ‌Z35 Certification‌: Optional through-thickness testing for critical joints.

‌Applications‌

  1. ‌Shipbuilding‌: Ice-class vessel hulls, bulkheads, and offshore drilling rigs.
  2. ‌Cryogenic Engineering‌: LNG storage tanks, polar pipeline systems.
  3. ‌Coastal Infrastructure‌: Heavy-load port cranes, wave-resistant breakwaters.

‌Processing & Surface Treatments‌

  • ‌Shot Blasting‌: Achieves Sa2.5 surface cleanliness (ISO 8501) for superior paint adhesion^[EN 10163]^.
  • ‌Thermal Treatments‌: Normalizing or TMCP ensures uniform grain structure.
  • ‌Dimensions‌:
    • ‌Thickness‌: 2.5–120mm (thermomechanical rolling for ≤100mm).
    • ‌Width‌: 1,000–3,000mm (plasma-cut edges available).
    • ‌Length‌: Customized up to 18m.

‌Industry Trends & Innovations‌

  • ‌High-Strength Demand‌: 5m-wide plates and 200–300mm thicknesses for mega-container ships.
  • ‌Eco-Friendly Coating‌: Compatible with zinc-aluminum-magnesium (ZAM) coatings for 50+ year lifespans.
  • ‌Automated Welding‌: Pre-qualified for robotic SAW and FCAW processes (AWS D1.1/D1.6).

‌Competitive Advantages‌

  • ‌Cost Efficiency‌: 20% lower lifecycle costs vs. duplex stainless steels.
  • ‌Weldability‌: No pre-heating required for thicknesses ≤25mm.
  • ‌Certifications‌: ABS, LR, DNV-GL, and BV mill certificates + EN 10204 3.1.

‌Certifications & Logistics‌

  • ‌Mandatory‌: Mill test certificates (MTC) with Charpy V-notch results.
  • ‌Testing‌: Ultrasonic flaw detection (UT), PMI, and bend testing.
  • ‌Packaging‌: VCI-coated waterproof wrapping + edge protectors for.

Product Show

Supplier of various types of carbon steel

Luo Kaiwei Steel Company is a comprehensive steel supplier that produces a variety of carbon steel plates, carbon steel pipes, galvanized steel, carbon steel coils, and steel profiles.

Luo Kaiwei Steel Company is a multi-ISO certified steel manufacturer specializing in carbon steel plates, pipes and galvanized coils since 2010. Competitive prices and ASTM/JIS compliant. Get instant quotes for bulk orders and global shipping support.

Tel: +86 15635685959

E-mail: [email protected]  

WhatsApp: +86 18912200505

Related Products

Scroll to Top