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CCS AH40 DH40 EH40 FH40 Marine Steel Plate

CCS AH40 DH40 EH40 FH40 Marine Steel Plate

CCSAH40 steel is a kind of hot rolled high tensile strength steel.
Higher-strength CCS shipbuilding steel comes in 12 grades of 3
strengths, AH40 is one of the grades. The CCS AH40 grade steel
plates have yield strength of 56,500 psi (390 MPa), and ultimate
tensile strength of 74,000 - 94,500 psi (510-650 MPa).

Product Category：

Shipbuilding Steel Plate

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info@mingdingsteel.com

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+8615553113555

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CCS AH40 DH40 EH40 FH40 Marine Steel Plate

Brief introduction of marine steel plate

Marine steel plate refers to structural steel used in ship building. It is considered a marine grade and must be able to resist corrosive effects that are common in a water environment. To achieve this, special alloying elements are added to these grades in order to defend agaist corrosion.While most carbon steel is not suited for marine environments, there are several marine grade carbon steels that have been approved by the different societies for shipbuilding applications.

Structural steel for ship hulls is divided into strength classes according to its minimum yield strength: general strength structural steel and high strength structural steel. Maine steel plate refers to hot rolled steel plate produced in accordance with the requirements of the classication society for the construction of ship hull structures.

There are 9 main classification societies in worldwide.
A.B.S    American Bureau of Shipping
B.V.     Bureau Veritas
C.C.S.   China Classification Society
D.N.V   Det Norske Veritas
G.L.    Germanischer Lloyd
K.R.    Korean Register of Shipping
L.R.    Lloyd’s Register of Shipping
N.K.    Nippon Kaiji Kyokai
R.I.N.A Registro Italiano Navale

CCSAH40 steel is a kind of hot rolled high tensile strength steel. Higher-strength CCS shipbuilding steel comes in 12 grades of 3 strengths, AH40 is one of the grades. The CCS AH40 grade steel plates have yield strength of 56,500 psi (390 MPa), and ultimate tensile strength of 74,000 - 94,500 psi (510-650 MPa).

CCS is a founding member of the International Association of Classification Societies(IACS),formed in 1968. The CCS fleet is recognized by approximately 116 international flag authorities. CCS integrated services for the complate shipping cycle including design, building, shipyard management, inspection and testing of materials/components and regular inspections to maintain the class are used by freight, ferries, ro-ro, passenger ships, yachts, cruise ships, navy, LGN and other specialist carrier vessels.

Grade AH40 steel is the impact force subjected to 0 ° C
Grade DH40 steel impact force at -20 ° C
Grade EH40 steel impact force at -40 ° C
Grade FH40 steel impact force at -60 ° C

Shot blasting service
Shot blasting is a method used to clean or polish steel when enhanced surface finishes are required. Shot blasting is used in almost every industry we serve. Especially in shipbuilding, rail,structural fabrication and more.

Specifications range
Thickness:2.5-120mm
Width:1000-3000mm
Length: As request

Chemical composition and mechanical properties

Chemical Composition

Steel grade	C	Si	Mn	P	S	Als
Grade AH40	≤0.18	≤0.50	0.9-1.6	≤0.035	≤0.035	≥0.015
Grade DH40	≤0.18	≤0.50	0.9-1.6	≤0.035	≤0.035	≥0.015
Grade EH40	≤0.18	≤0.50	0.9-1.6	≤0.035	≤0.035	≥0.015
Grade FH40	≤0.18	≤0.50	0.9-1.6	≤0.035	≤0.035	≥0.015

Processing for Different Grades
Grade D, E (DH32, DH36, EH 32, EH 36)
Grade D and E series (inlcuding AH32/36, DH32, DH36, EH32, EH36) shipbuilding steel plates require good low temperature toughness and good welding performance. The production high-strength shipbuilding steel plate needs to be normalized by means of controlled rolling and controlled cooling or heat treatment processes with more complete equipment. At the same time, the internal steel purity of the supplied billets is required to be high, especially the content of S, P, N, 0 and H in the steel should be strictly controlled.

Alloy Elements Added to Improve Toughness
In order to ensure the performance of high-strength ship plates, micro-alloying technology is adopted. By adding Nb, V, Ti and other alloying elements to the steel, combined with the controlled rolling process, the grain is refined and the toughness is improved.
Direction of Development for Shipbuilding Plate
High strength, high specification, with the ship's large-scale and safety, and changes in coating specifications, the demand for ordinary A-class panels is gradually reduced, and the demand for high-strength panels is increasing, which is concentrated in large ships of 5m wide. Plate, 200-300mm thickness special thick ship board.

Mechanical Properties

Steel grade	Yield point/MPa	Tensile point /MPa	Elongation/%	Temperature/° C	V-type impact test
					Akv/J
					≤50MM	50-70MM	70-100MM
Grade AH40	≥390	510-660	≥20	0	41/21	-	-
Grade DH40	≥390	510-660	≥20	-20	41/21	-	-
Grade EH40	≥390	510-660	≥20	-40	41/21	-	-
Grade FH40	≥390	510-660	≥20	-60	41/21	-	-

Factory video

Shandong Mingding Supply Chain Management Service Co., Ltd. was established in 2013, focusing on the production, processing and trade of metal materials. We have a professional team to provide quality service, we sincerely welcome customers at home and abroad to visit our company for guidance and long-term cooperation.

Warehouse storage

The company has the most advanced production equipment and automatic control system, to ensure the most reliable product quality. In addition, we also have a professional international trade and logistics team. With quality products and excellent service, we have established a large number of long-term customers all over the world.

Packing and delivery

To better ensure the safety of your goods, professional, environmentally friendly, convenient and efficient packaging services will be provided.

Production Technology

Our main products include high quality carbon steel, stainless steel products,galvanized steel products, aluminum and copper. We can also provide cutting, punching, bending, polishing, shearing, wire drawing and other related service.

Honor

Application

Our company is set production processing and trade as one. The company has the most advanced production equipment and automatic control system, to ensure reliable product quality and sufficient supply capacity. Our main products are stainless steel, silicon steel, galvanized steel, carbon steel, aluminum products and other series. Applicable to engineering, coal mining, shipping, aviation, boiler, machinery, military and other fields. We sincerely welcome customers from all over the world to visit our company to discuss long-term cooperation.

Architectural field

Automotive field

Aviation field

Chemical industry field

FAQ

How do you package the product?

The inner layer is covered with waterproof paper, packed in iron and secured by fumigated wooden brackets. It can effectively protect products from corrosion in the process of sea sample transportation.

Are the products inspected before shipment?

Of course. All our products go through strict quality tests before they are packed. Those that fail will be destroyed.

Can I visit your factory?

Of course. We welcome customers from all over the world to visit our factory.

What certifications have your products passed?

We have ISO 9001, SGS, EWC and other certifications.

Can you provide samples?

Of course, we can send samples all over the world. Our samples are free of charge, but the customer needs to bear the Courier charge

What is the loading port?

Normally, we ship from Shanghai, Tianjin, Qingdao and Ningbo ports. You can choose other ports according to your needs.

Shipbuilding Steel Plate