Product Overview
The DNV D40 is a high-strength shipbuilding steel plate approved by Det Norske Veritas (DNV) . Designed for shipbuilding and offshore engineering, it offers excellent mechanical properties, cold-forming capabilities, and impact toughness at low temperatures. DNV D40 is ideal for constructing ship hulls, offshore platforms, and marine equipment where both strength and weldability are critical.
With a minimum yield strength of 390 MPa, DNV D40 falls under the high-strength (HS) category of marine steels, ensuring safety, reliability, and compliance with international shipping standards.
Product Advantages
One-stop steel procurement
DNV Type Approval – Full certification traceable to DNV standards.
Superior Low-Temperature Toughness – Passes charpy V-notch impact tests at -20°C.
Excellent Weldability – Low carbon equivalent (CEV) ensures stable welding performance.
High Yield Strength (390 MPa) – Reduces plate thickness and lowers overall weight.
Versatile Processing – Supports bending, rolling, cutting, and drilling without cracking.
Corrosion-Resistant Option – Can be supplied with marine-grade anti-corrosion coatings.
Key Specifications & Tolerances
| Parameter | Value |
|---|---|
| Standard | DNV (Det Norske Veritas) |
| Steel Grade | D40 |
| Thickness Range | 6 mm – 150 mm |
| Width Range | 1,500 mm – 4,500 mm |
| Length Range | 6,000 mm – 18,000 mm |
| Yield Strength (min) | 390 MPa |
| Tensile Strength | 520 – 680 MPa |
| Elongation (min) | 20% |
| Impact Test Temperature | -20°C |
| Impact Energy (min) | 41 J (average) |
| Carbon Equivalent (CEV) | ≤ 0.43 (depending on thickness) |
| Delivery Condition | AR (As-Rolled), N (Normalized), TMCP, QT |
Applications | Where is DVN D40 shipbuilding Steel Used?
Ship Hulls
Hull structures, bulkheads, decks, and inner bottoms.
Offshore Platforms
Jackets, piles, topsides modules, and helidecks.
Marine Equipment
Cranes, shipping containers, and marine propulsion components.
High-stress structural components
requiring superior strength-to-weight ratio.
why choose us?
✔ Direct Mill Source – Competitive pricing with stable supply chains.
✔ Full Documentation – MTC (Mill Test Certificate) complying with EN 10204 3.1 or 3.2.
✔ Global Delivery – Fast shipping to major ports worldwide (Rotterdam, Houston, Shanghai, Dubai, etc.).
✔ Custom Cutting & Processing – Flame cutting, laser cutting, beveling, and drilling services available.
✔ Third-Party Inspection Accepted – Support for SGS, BV, Lloyds, or DNV inspection before shipment.
✔ Responsive After-Sales – Technical support and quality claims handled within 48 hours.
Get the quotation within 24 hours
one-stop solution
professional team
high quality
our Partners
We trusted by
Michael Tran
Procurement Manager, Vietnam Shipbuilding Co.
Elena V.
Structural Engineer, Norway Offshore Engineering
Carlos M.
Production Director, Brazil Marine Fabrication
FAQ
01.Is DNV D40 suitable for Arctic marine environments?
Yes, DNV D40 provides impact toughness at -20°C, making it suitable for cold regions like the North Sea and Baltic Sea. For lower temperatures (e.g., -40°C), please consider DNV E40 or F40.
02.Can you supply DNV D40 plates with EN 10204 3.2 certification?
03.What is the difference between DNV D40 and DNV A36?
| Grade | Yield Strength | Impact Temp | Application |
|---|---|---|---|
| A36 | 355 MPa | 0°C | General hull structure |
| D40 | 390 MPa | -20°C | High-stress, low-temp areas |
D40 is stronger and better suited for critical regions like decks and longitudinal bulkheads.
04.Do you offer cutting and machining services before shipping?
Yes. We provide flame cutting, plasma cutting, drilling, beveling, and custom size shearing to reduce your on-site fabrication work.
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