CCS AH40 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). All the CCS AH40 shipbuilding Steel offered by Gnee can be certificated by CCS


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). All the CCS AH40 shipbuilding Steel offered by Gnee can be certificated by CCS

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
Length: As request
Chemical composition and mechanical properties
Chemical Composition
Steel gradeCSiMnPSAls
Grade AH40≤0.18≤0.500.9-1.6≤0.035≤0.035≥0.015
Grade DH40≤0.18≤0.500.9-1.6≤0.035≤0.035≥0.015
Grade EH40≤0.18≤0.500.9-1.6≤0.035≤0.035≥0.015
Grade FH40≤0.18≤0.500.9-1.6≤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 gradeYield point/MPaTensile point /MPaElongation/%Temperature/° CV-type impact test
Grade AH40≥390510-660≥20041/21--
Grade DH40≥390510-660≥20-2041/21--
Grade EH40≥390510-660≥20-4041/21--
Grade FH40≥390510-660≥20-6041/21--

About us

Founded in 2014, Jiyue Steel Co., Ltd. initially focused on providing high-quality steel for the rapid development of China's infrastructure. Based on the advantages of steel resources and good reputation in the domestic market, combined with the huge demand for steel products in the international market, the company started its international business in 2016 and successfully passed the ISo9001:2008 quality management system certification.

With high quality steel products and professional services, Jiyue has won international praise in infrastructure, shipbuilding, petroleum and other industries, and gradually grew into a shining star in the steel export industry. With the exploration and innovation of the company, gradually formed the advantages of steel plate products, and established its own machining center, in order to meet the diversified requirements of customers.

Packaging & shipping

Packaging and loading:

Packaging: According to customers' needs, use wrapping paper. If the transportation period exceeds 10 days or encounters special climate, we will use waterproof packaging and add plastic film to prevent moisture, water and rust.

Loading: We use the wooden pallet,triangular wood to fix the coil,and the steel wire rope to hold on the both side. That can prevent from the crush injury effectively.


Q1:Accepted delivery terms


Q2:Accepted Payment Types

A2:T/T, L/C

Q3:What is your delivery time ?

A3:8000 tons of inventory guarantee immediate delivery, Non-stock products, delivery within 5-7 days.

Q4:Accepted payment currencies


Q5:What standard steel can you provide?

A5:We can provide various standards, such as: AISI, ASTM, ANSI, ASME, UNS, SAE, DIN, EN, GB, JIS, etc

Q6:How do you guarantee the product quality?

A6:CE, ISO certificate, supporting any third party inspection. A pre-production sample before mass production, final Inspection before shipment.


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