When it comes to constructing robust ships and offshore platforms that must endure extreme cold and high stresses, BV Grade FH40 steel plate is a standout choice.
This high-strength steel is specifically designed for marine environments, offering excellent toughness at low temperatures, good weldability, and resistance to corrosion from saltwater. As part of the “FH” series, it emphasizes superior performance in freezing conditions, making it ideal for polar operations.
At SHH STEEL, we specialize in producing and exporting BV FH40 plates that comply with Bureau Veritas (BV) standards. These plates are commonly used in hulls, decks, and structural components for icebreakers and arctic vessels.
What makes BV FH40 special? It balances high strength with impact resistance at -60°C, ensuring safety and longevity in harsh seas. For shipbuilders and engineers, understanding BV Grade FH40 steel plate helps in selecting materials for reliable, efficient designs in cold marine settings.
BV Grade FH40 is classified as a high-strength steel under BV rules, part of the “FH” family for enhanced tensile and extreme cold toughness.
It is typically hot-rolled and may undergo thermo-mechanical controlled processing (TMCP) or normalization to achieve a fine microstructure. The grade adheres to BV Rules for the Classification of Steel Ships, suitable for vessels in severe low-temperature conditions.
SHH STEEL ensures every BV FH40 plate is certified and ready for global use.
We provide BV FH40 steel plates in various sizes to fit arctic shipbuilding needs, promoting flexibility and waste reduction.
Here’s a summary in a table for easy reference:
| Dimension Type | Range/Details |
| Thickness | 5 mm to 100 mm |
| Width | Up to 3000 mm |
| Length | Up to 12000 mm |
| Custom Options | Available for cuts and shapes |
If you need specific dimensions for your BV/FH40 plates, our team can tailor them to your designs.
The chemical makeup of BV FH40 steel plate is carefully balanced to provide high strength and toughness in extreme cold marine environments.
Low levels of phosphorus and sulfur prevent cracking, while alloying elements like niobium and vanadium enhance grain refinement. BV standards specify limits based on ladle analysis (during melting) and product analysis (final check). Here’s the typical composition:
We use lab tests at SHH STEEL to ensure every batch meets these specs for reliable BV FH40 marine grade steel.
| Element | Ladle Analysis (Max % unless range) | Product Analysis (Max % unless range) |
| Carbon (C) | ≤ 0.16 | ≤ 0.18 |
| Manganese (Mn) | 0.90 – 1.60 | 0.85 – 1.65 |
| Silicon (Si) | ≤ 0.50 | ≤ 0.55 |
| Phosphorus (P) | ≤ 0.025 | ≤ 0.030 |
| Sulfur (S) | ≤ 0.025 | ≤ 0.030 |
| Aluminum (Al) | ≥ 0.015 (acid soluble) | ≥ 0.010 |
| Niobium (Nb) | 0.02 – 0.05 | 0.02 – 0.05 |
| Vanadium (V) | 0.05 – 0.10 | 0.05 – 0.10 |
Note: Trace elements like copper or chromium may be present for added corrosion resistance.
BV FH40 steel plate has strong mechanical features that make it great for handling heavy loads and impacts in extreme cold shipbuilding.
It offers high yield strength to resist bending, good tensile strength for overall durability, and enough stretch (elongation) for shaping without breaking.
Plus, it passes impact tests at -60°C to stay tough in freezing temperatures. These properties help BV Grade FH40 stand up to waves, collisions, and wear in polar seas.
Here’s a table summarizing the key mechanical properties:
| Property | Value/Requirement |
| Yield Strength (min) | 390 MPa |
| Tensile Strength | 510 – 650 MPa |
| Elongation (min) | 20% (in 200 mm) |
| Charpy V-Notch Impact | 41 J (longitudinal) at -60°C |
Compared to basic steels, BV/FH40 provides better performance, which is why it’s a favorite in cold marine projects.
When you order BV FH40 steel plates from SHH STEEL, we focus on delivering them in the best condition for your needs.
The main delivery states include normalized rolling, where the steel is heated to about 900°C and cooled in air. This process refines the grain structure, improving toughness and uniformity.
For thicker plates, we might use thermo-mechanical controlled processing (TMCP). This combines controlled rolling with accelerated cooling to enhance strength without losing weldability.
All plates come with BV certification, including a mill test certificate (MTC) as per EN 10204 type 3.1 or 3.2. This document confirms the material meets specs.
Packaging is important too – we wrap plates in waterproof material and use sturdy wooden crates to protect against damage during shipping.
Lead times are usually 15 to 30 days, but we offer faster options for urgent orders. As a global shipbuilding steel supplier, we handle worldwide delivery with reliable logistics.
If you have special requirements, like additional heat treatments, just let us know early in the process.
| Delivery Condition | Description |
| Normalized | Heated and air-cooled for uniformity and toughness |
| TMCP | Controlled rolling and cooling for enhanced strength |
In China’s steel market, prices for BV FH40 steel plate can vary based on factors like raw material costs and demand.
Right now, expect to pay between $550 and $750 per ton for standard sizes. Thinner plates (like 5-20 mm) are often cheaper, while thicker ones cost more due to extra processing.
Global trends and BV certification can add a small premium, around 10-20%. At SHH STEEL, we keep prices competitive with discounts for large orders.
Contact us for a personalized quote on BV Grade FH40 – quality marine steel like this saves money in the long run by cutting down on repairs.
Precision matters in shipbuilding to ensure parts fit perfectly without extra work. BV FH40 steel plates from SHH STEEL follow strict tolerances set by BV rules and standards like EN 10029 for flatness and dimensions.
These limits help avoid issues like warping or misalignment during assembly. We use modern equipment to meet or exceed these specs, and we inspect each plate.
If your project needs even tighter controls, we can adjust – just discuss it with our team.
Here’s a table of typical tolerances for BV FH40 plates:
| Tolerance Type | Specification/Details |
| Thickness | For <25 mm: +0.3 mm / -0.3 mm; For 25-40 mm: +0.4 mm / -0.3 mm; Scales up for thicker |
| Width | +20 mm / -0 mm |
| Length | +50 mm / -0 mm |
| Flatness | Max 6 mm per meter |
| Squareness | Max 10 mm deviation |
These ensure BV/FH40 plates are ready for precise welding and building.
To pick the right steel, compare BV FH40 with 4 other grades: BV AH40, BV DH40, BV EH40, BV FH36. They vary in cold resistance and strength.
BV FH40 is best for extreme cold with high strength.
| Property | BV AH40 | BV DH40 | BV EH40 | BV FH36 | BV FH40 |
| Yield Strength (min MPa) | 390 | 390 | 390 | 355 | 390 |
| Tensile Strength (MPa) | 510-650 | 510-650 | 510-650 | 490-620 | 510-650 |
| Impact Test Temp (°C) | 0 | -20 | -40 | -60 | -60 |
| Toughness (Charpy J min) | 41 | 41 | 41 | 34 | 41 |
| Typical Use | Moderate stress | Cold high | Arctic high | Extreme cold high | Extreme cold high stress |
| Cost Relative | High | High | Higher | High | Highest |
BV Grade FH40 optimal for extreme cold high-stress.
BV FH40 steel plate has matching grades from other classification societies, making it easy to source or substitute worldwide.
These equivalents have similar chemistry and properties, so you can swap with proper approvals. This is helpful for international builds.
At SHH STEEL, we supply BV FH40 or its equals to fit your local rules.
Here’s a table of common equivalent grades:
| Classification Society | Equivalent Grade |
| Lloyd’s Register (LR) | FH40 |
| American Bureau of Shipping (ABS) | FH40 |
| Det Norske Veritas (DNV) | NV F40 |
| Germanischer Lloyd (GL) | F40 |
| Registro Italiano Navale (RINA) | FH40 |
| China Classification Society (CCS) | FH40 |
| Nippon Kaiji Kyokai (NK) | FH40 |
| Korean Register (KR) | FH40 |
To boost performance, BV FH40 can have extras like Z-testing (Z25 or Z35) for better through-thickness strength, reducing tear risks in welds.
We also do ultrasonic checks to spot hidden flaws and fine-grain treatments for extra toughness.
For welded parts, simulated post-weld heat treatment is available. Specify these when ordering from SHH STEEL for premium shipbuilding steel.
BV FH40 steel plate is versatile in extreme cold marine work. It’s key for ship hulls that take ice hits, like in icebreakers.
In offshore setups, it builds platforms and legs that stand up to arctic waves. Other uses: barges in polar areas, ferries in icy waters, and coast wind farms in freezing spots.
Its strength and cold resistance make it ideal for long sea exposure. SHH STEEL has delivered BV Grade FH40 for many successful projects.
SHH STEEL for BV FH40 steel plates because we’re pros in making and shipping them from China.
Our modern factories ensure top quality at good prices. We offer expert help from start to finish, including tech advice and fast global shipping.
With exports to 50+ countries and full BV certs, we’re reliable. Plus, we focus on green methods. Trust us for strong, dependable marine steel plate.
BV FH40 steel plate is a powerhouse in the shipbuilding world, offering unmatched strength, reliability, and value for extreme cold applications.
From its precise specifications to versatile applications, it’s clear why this marine grade is a top pick for professionals. As your dedicated SHH STEEL supplier, we’re here to provide premium BV Grade FH40 tailored to your needs. Ready to elevate your next project? Reach out today for expert advice and unbeatable service.
