CCS Grade E Shipbuilding Steel Plate

CCS Grade E shipbuilding steel plate is a normal-strength marine structural steel certified by the China Classification Society (CCS). As the highest-grade material within the CCS general-strength shipbuilding steel series (Grades A, B, D, and E), CCS Grade E is specifically engineered to deliver exceptional low-temperature toughness and structural reliability in extreme marine environments.

This steel plate is widely utilized in the construction of ship hulls, offshore platforms, and marine equipment that must withstand freezing sea conditions. It is the preferred choice when project specifications demand reliable performance at temperatures as low as -40°C.

Key Features & Benefits

 

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uperior Low-Temperature Toughness: Charpy V-Notch impact testing at -40°C ensures outstanding resistance to brittle fracture in Arctic and sub-Arctic conditions.

Excellent Weldability and Formability: Optimized chemical composition and controlled rolling processes provide reliable weldability and good cold-forming characteristics for complex shipbuilding fabrication.

 

Comprehensive Testing Options: Z-direction testing (Z15, Z25, Z35), ultrasonic examination (ASTM A435, A577, A578), and high-tension testing are available to meet demanding project requirements.

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Chemical Composition (Heat Analysis, Max %)

Mechanical Properties

Available Dimensions & Heat Treatment

Why Choose Grade E?
While all four grades share the same yield and tensile strength, the critical differentiator is low-temperature impact toughness. CCS Grade E is the only grade in this series that guarantees reliable performance at -40°C, making it the mandatory choice for vessels and offshore installations operating in cold waters or subjected to extreme environmental stress.

Choosing CCS Grade E is not just about meeting a specification-it's about risk mitigation. In Arctic conditions, material failure is not an option. Grade E provides the guaranteed toughness and proven reliability that protects your crew, your asset, and your reputation.

In accordance with the International Association of Classification Societies (IACS) unified requirements, CCS Grade E is fully equivalent to the following grades:

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Applications | Where is CCS GRADE E Steel Used?

 

 

Ship Hull Structures

Shell plating, deck plating, bulkheads, and stiffeners for vessels operating in cold regions.

 

Offshore Platforms

Jackets, decks, and support structures in harsh marine environments.

 

Arctic and Sub-Arctic Vessels

Icebreakers, polar supply vessels, and fishing trawlers.

 

Critical Welded Joints

Z-direction tested plates for T-joints and fillet welds where lamellar tearing is a concern.

We offer a comprehensive range of services to meet your specific project requirements:

Cutting to Size: Precision cutting (plasma, flame, laser) to your specified dimensions.

Edge Preparation: Beveling and chamfering for welding readiness.

Surface Treatment: Shot blasting, painting, and coating services.

Ultrasonic Testing: In accordance with ASTM A435, A577, A578.

Z-Directional Testing: Z15, Z25, Z35 grades to prevent lamellar tearing in thick plate welded T-joints.

Third-Party Inspection: SGS, BV, or other independent inspection services.

why choose us?

 

All CCS Grade E steel plates are supplied with full traceability and are certified by recognized classification societies. We provide:

Original Mill Test Certificates (EN 10204 Format 3.1 or 3.2).

Third-party inspection upon request.

Strict adherence to CCS Rules and IACS requirements.

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User Evaluation

 CCS Grade E delivered outstanding -40°C impact values (32J avg.) – well above the 27J requirement. Delivery was 10 days early. Will definitely order again.

Mr. Zhang

Chief Engineer

Z35 performance was excellent. Weldability far surpassed Grade D – rework rate dropped by 60%. UT first-pass acceptance reached 98.7%. Full traceability docs made classification audit smooth.

Mr. Michael Roberts,

Procurement Manager

We've compared Grades A, B, D, and E across multiple newbuilds. Grade E is the only reliable choice for Arctic routes. The normalized plates showed zero cracks in cold bending tests. Great value for the performance.

Mr. Capt. Andrey Volkov

Fleet Technical Director

FAQ

 

 

01.What is the difference between CCS Grade E and Grade D?

Both have the same yield (235 MPa) and tensile strength (400–520 MPa). The key difference is impact test temperature: Grade D is tested at -10°C, while Grade E is tested at -40°C, making Grade E the only choice for Arctic and sub-Arctic environments.

02.Can CCS Grade E be welded without preheating?

Yes, due to its low carbon content (≤0.18%), CCS Grade E offers excellent weldability. However, for plates thicker than 40mm or in cold ambient conditions, a preheat of 50–100°C is recommended to prevent hydrogen-induced cracking. Always follow approved welding procedure specifications (WPS).

03.Do you supply plates with third-party inspection?

Yes. We support SGS, BV, ABS, DNV, and LR inspections. We can also arrange witness testing for mechanical properties and chemical analysis at our mill. All inspections are coordinated with your project schedule.

04.What is the minimum order quantity (MOQ)?

Our MOQ is 10 tons per size. For trial orders or urgent small-batch requirements, we can accommodate as low as 3 tons. Contact our sales team for custom arrangements.

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