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ABS Grade AH36 Shipbuilding Steel Plate - High-Strength Marine Steel Plate

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ABS Grade AH36 Shipbuilding Steel Plate - High-Strength Marine Steel Plate

Our ABS AH36 marine steel plates have been fully certified by the American Bureau of Shipping (ABS). As a specialist supplier, we offer high-strength, weldable and corrosion-resistant ABS-grade AH36 shipbuilding steel plates, providing reliable material solutions for shipbuilding and offshore engineering projects worldwide.

Standard :
ABS: Rules for Building and Classing Steel Vessels
Grade :
ABS Grade AH36
Thickness :
5.0 - 150.0 mm
Width :
1500.0 - 3950.0 mm
Length :
6000.0 - 18000.0 mm

Special thickness, width, and length can be negotiated separately.
We also provide customized processing services.If you have any questions, please contact us.

Overview

1. What is ABS Grade AH36 shipbuilding steel plate?

ABS Grade AH36 shipbuilding steel plate is a high-strength, low-alloy structural steel plate designed for the construction of large ship hulls and offshore platform structures. It is certified by the American Bureau of Shipping (ABS) and meets the stringent requirements of the global shipping industry.

ABS AH36 grade shipbuilding steel plate has a minimum yield strength of 355 MPa. It has undergone rigorous Charpy V-notch impact testing at 0°C and exhibits excellent impact toughness, making it an ideal choice for general-purpose vessels operating in mild to temperate maritime climates.

2. Meaning of the Designation

A: Steel quality grade (impact toughness grade, typically indicating good toughness at 0°C)

H: High-strength steel

32: Minimum yield strength of 315 MPa (32 kg/mm²)

Availability Specifications and Dimensions

Product	ABS Grade AH36 Shipbuilding Steel Plate
Certification	ABS
Grade	AH36
Material Category	Heigh-strength Structural Steel for Shipbuilding
Thickness	5 - 150 mm
Width	1500 - 3950 mm
Length	6000 - 18000 mm
Delivery Conditions	Hot Rolled (HR), Controlled Rolled (CR), Normalized (N), Thermo-Mechanical Controlled Processed (TMCP), Quenched and Tempered (Q+T).
Surface Conditions	Surface pretreatment (shot blasting, rust removal, oiling, painting, etc.) is available.
Testing	Tensile test, Charpy V-notch impact test, Ultrasonic testing (UT), Z-direction property test (Grades Z15/Z25/Z35), Dimensional inspection, Custom cutting.
Primary Applications	Shipbuilding, Marine Engineering, Port Machinery, Ship Repair & Other Fields.
MOQ	50 tons (small orders can be negotiated).
Delivery Time	15–20 days after order confirmation (urgent orders accepted)
Packaging	Standard export packaging for sea transport (primarily steel strapping and moisture-proof cloth wrapping).
Country of origin	China

Chemical Composition

Chemical Composition (Heat Analysis, wt %)

Grade	C	Si	Mn	P	S	Cu	Cr	Ni	Nb	V	Ti	Mo	Als
ABS AH36	≤ 0.18	≤ 0.50	0.90 - 1.60	≤ 0.030	≤ 0.030	≤ 0.35	≤ 0.20	≤ 0.40	0.02 - 0.05	0.05 - 0.10	≤ 0.02	≤ 0.08	≥ 0.015

Carbon Equivalent (wt %)

Thickness (mm)	5 - 50	50 - 150
Typical CEV (wt %)	≤ 0.38	≤ 0.40

Calculation formula (IIW): CEV = CEV = C + Mn/6 + (Cr + Mo + V)/5 + (Ni + Cu)/15

Mechanical Properties

Tensile test properties

Grade	Thickness, mm	Yield Strength (ReH), MPa	Tensile Strength (Rm), MPa	Elongation (A), %
ABS Grade AH36	≤ 50	≥ 355	490 - 530	≥ 21

Impact energy KV2 (Charpy V-notch Impact Test)

Grade	Thickness, mm	Temperature, ℃	Impact Energy, KV₂ / J
Grade	Thickness, mm	Temperature, ℃	Longitudinal	Transverse
ABS Grade AH36	≤ 50	0	≥ 34	≥ 24

Applications

Due to its excellent overall performance, ABS Grade AH36 shipbuilding steel plate is widely used in the global shipping industry and related offshore engineering sectors, primarily including:

1. Shipbuilding

Used for hull structures, decks, keels, frames, bulkheads and beams in cargo ships, container ships, oil tankers, bulk carriers, ferries and general merchant vessels. Particularly suitable for high-strength decks and deckhouses on large vessels, providing reliable structural support.

2. Offshore Engineering

Used in offshore oil drilling platforms, platform pipe joints, offshore wind power structures and coastal terminal facilities to manufacture critical load-bearing components, such as jackets and pile legs.

3. Port Machinery

Used for major structural components of large port cranes, ship loaders and unloaders, meeting requirements for high strength, fatigue resistance and corrosion resistance.

4. Ship Repair and Other Fields

Used for the maintenance and replacement of structural components on existing vessels, and is also suitable for low-temperature structural components in coastal engineering and marine-related fields.

Other Information

Key features of our ABS Grade AH36 shipbuilding steel plates:

1. Certification and compliance

Certified by the American Bureau of Shipping (ABS), with full quality certificates (including Material Test Certificates (MTC)) provided, and support for third-party testing by SGS, BV and others.

2. High Strength Properties

Yield strength ≥355 MPa, tensile strength: 490–630 MPa, elongation ≥21%. Possesses excellent load-bearing capacity and is suitable for harsh environments such as wave impact and structural stress.

3. Excellent Weldability and Workability

Low carbon equivalent (CEV ≤ 0.40%), suitable for common welding processes such as submerged arc welding and GMAW. We can provide customised services including cutting, bending and surface pre-treatment.

4. Corrosion Resistance

Strict control of sulphur and phosphorus content effectively resists corrosion from marine salt spray and humid environments, reducing maintenance costs and extending the service life of the structure.

5. Toughness and Quality Control

Full-process quality inspection: ultrasonic testing (UT), tensile testing, Charpy V-notch impact testing (minimum impact energy at 0°C: 34 J, longitudinal), meeting the safety requirements for critical ship structures.

Quality Assurance

Quality is the cornerstone of our development. Our ABS Grade AH36 shipbuilding steel plates undergo rigorous quality control throughout the entire production process, from the selection of raw materials (high-quality steel billets) to smelting, rolling, heat treatment and final product inspection. Every stage of the process is closely monitored to ensure that every batch of products fully complies with ABS certification standards and customer requirements. We provide a complete set of quality certificates with every shipment, giving you peace of mind.

FAQ

# 1Q:What is the difference between ABS Grade A and AH36?

ABS Grade A is a standard-strength marine steel with a yield strength of 235 MPa, whereas AH36 is a high-strength marine steel with a yield strength of 355 MPa, designed specifically for heavy-duty structures.

Grade A is typically tested at room temperature, whereas AH36 requires a Charpy impact test to be conducted at 0°C (impact energy: ≥34 J, longitudinal).

# 2Q:Can ABS AH36 marine steel plates be used in low-temperature environments?

Yes, AH36 marine steel plates are required to undergo impact toughness testing at 0°C. For lower temperatures, we recommend using grades such as DH36 (-20°C) or EH36 (-40°C).

# 3Q:Do you provide ABS certification documents for your ABS shipbuilding plates?

Yes, all our ABS shipbuilding plates are certified by the American Bureau of Shipping (ABS). We will provide full certification documents and a Material Test Certificate (MTC) to ensure that our ABS steel plate products comply with international maritime industry regulations and meet the acceptance requirements for our customers’ projects.

# 4Q:Can ABS shipbuilding steel plates be supplied in normalized conditions?

Yes. Depending on the thickness (typically 40 mm or more), we can supply ABS shipbuilding steel plates in either normalized (N) or thermomechanically controlled process (TMCP) conditions to improve the grain structure.