CCS Grade EH36 Shipbuilding Steel Plate - Certified High-Strength Marine Steel

1. What is CCS EH36 Shipbuilding Steel Plate?

CCS EH36 is a high-strength marine structural steel plate certified by the China Classification Society (CCS), complying with the GB/T 712 national standard and the CCS Shipbuilding Materials Production Specifications. This material belongs to the E-grade high-strength shipbuilding steel category. Through microalloying with niobium, vanadium and titanium, combined with fine-graining treatment, it offers a high yield strength, excellent low-temperature impact toughness, resistance to seawater corrosion and good bending formability.

Compared to the AH36 and DH36 in the same series, CCS EH36 maintains stable mechanical properties in extreme cold environments down to -40°C, making it suitable for demanding marine engineering projects such as polar vessels, large cargo ships and deep-sea offshore platforms.

As a specialist supplier of marine steels, we offer hot-rolled CCS EH36 steel plates delivered in normalized or TMCP (Thermomechanical Control Process) conditions, ensuring optimal performance in deep-sea high-pressure environments.

2. Meaning of the Designation

CCS: Certified by the China Classification Society

E: Quality Grade E (requiring impact toughness at -40°C)

H: High-strength steel

36: Minimum yield strength: 355 MPa (≈ 36 kgf/mm²)

Chemical Composition (Heat Analysis, wt %)

Carbon Equivalent (wt %)

Calculation formula (IIW): CEV = C + Mn/6 + (Cr + Mo + V)/5 + (Ni + Cu)/15

Tensile Test

Charpy (V-notch) Impact Test

1. Large-scale Shipbuilding

1.1 Core Structures of Major Vessel Types

Covers the key structures of large vessels, crude oil tankers, container ships, polar cruise ships and multi-purpose cargo ships.

1.2 Key Load-bearing Components

Includes major load-bearing components of the hull such as outer plating, main deck, bulkheads, longitudinal frames and stern posts.

1.3 Load-bearing Structures for Specialised Vessel Types

Ice-class reinforcement structures for polar-class vessels, as well as core load-bearing components for deep-sea operation vessels and cryogenic-resistant specialised engineering vessels.

2. Deep-sea Offshore Engineering

2.1 Oil and Gas Extraction Facilities

Offshore oil and gas drilling platforms, jacket support structures, and load-bearing deck modules.

2.2 Offshore Renewable Energy and Oil Storage Facilities

Foundation platforms for large-scale offshore wind power projects; main structures of Floating Production, Storage and Offloading (FPSO) units.

2.3 Other Marine Engineering Structures

Cross-sea causeways, breakwaters and heavy-duty marine auxiliary machinery and equipment.

3. Other Industrial Applications

Ship refurbishment and maintenance; marine crane components; pressure-bearing structural components; and heavy-duty equipment parts requiring high strength and low-temperature toughness.

Key Advantages of Our CCS EH36 Shipbuilding Steel Plates

1. Full CCS Certification

All batches of CCS EH36 shipbuilding steel plates have been officially certified by the China Classification Society (CCS), and full certification documentation is available.

2. Excellent Low-Temperature Performance

Maintains stable mechanical properties in ultra-low temperature environments down to -40°C, preventing brittle fracture, and is suitable for polar-class vessels and offshore platforms operating in cold regions.

3. Good Weldability

With a low carbon equivalent, it is compatible with mainstream welding processes such as SAW, SMAW and GMAW, and exhibits low susceptibility to weld cracking.

4. Good machinability

Supports processing methods such as plasma cutting, flame cutting, and cold/hot bending, facilitating the manufacture of complex ship components.

5. Excellent resistance to seawater corrosion

Through optimised alloy element ratios, it effectively resists electrochemical corrosion in seawater and salt spray oxidation, reducing maintenance frequency and extending the service life of ship hulls and offshore structures.

6. Customised solutions

We offer a range of value-added services, including custom-sized cutting, Z-direction performance testing (Z15/Z25/Z35 grades), ultrasonic testing (UT), surface treatment and heat treatment.

Our Services and Delivery

1. Quality Assurance

We provide CCS certification, factory test certificates, and reports on chemical composition and mechanical properties.

2. Custom Processing

We offer a one-stop service for pre-processing, including cutting, surface polishing, anti-rust coating and heat treatment.

3. Flexible Minimum Order Quantities

We accommodate both small-batch sample orders and large-volume commercial orders to meet diverse procurement needs.

4. Fast Delivery

Common specifications are available from stock, whilst custom products have a lead time of 15–20 days.

5. Global Shipping

We support trade terms such as FOB, CFR and CIF, with delivery to major ports worldwide.

6. After-Sales Support

24/7 online technical support.

• Differences Between CCS AH36, DH36 and EH36 Shipbuilding Plates