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High-Strength ABS Grade DH36 Shipbuilding Steel Plate - Certified Marine Steel

Q: What are equivalent grades of ABS DH36 steel plate?

International equivalent grades:China: GB/T 712 DH36USA: ASTM A131 Grade DH36Classification society equivalent: CCS DH36, DNV DH36, BV DH36, LR DH36All equivalent grades meet the same chemical and mechanical requirements.

Q: What is the difference between ABS AH36, DH36, EH36 and FH36?

GradeImpact Test RequirementsMicroalloyingSuitable for Marine EnvironmentsAH36Passes impact testing at 0°COptionalStandard marine environments.DH36Passes impact testing at -20°COptionalCold-water marine environments.EH36Passes impact testing at -40°CMust contain Nb/V/Ti.Polar marine environments with extremely low temperatures.FH36Passes impact testing at -60°CMust contain Nb/V/Ti, and restricted N content.Polar/ice regions and ultra-low-temperature deep-sea environments.

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High-Strength ABS Grade DH36 Shipbuilding Steel Plate - Certified Marine Steel

We supply high-quality ABS Grade DH36 shipbuilding steel plates, suitable for use in ships, offshore platforms and marine structural engineering, which have been fully factory-certified by the American Bureau of Shipping (ABS). This product offers excellent low-temperature toughness and good weldability. Please feel free to consult the detailed specifications, chemical composition and mechanical properties. We offer bulk stock, third-party inspection and competitive pricing to buyers worldwide.

Standard :
ABS: Rules for Building and Classing Steel Vessels
Grade :
ABS Grade DH36
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 DH36 shipbuilding steel plate?

ABS Grade DH36 is a high-strength low-alloy (HSLA) structural steel plate certified by the American Bureau of Shipping (ABS) for use in shipbuilding and offshore structures. It is specifically designed for critical hull and offshore components requiring high strength, good low-temperature toughness and weldability. ABS Grade DH36 offers excellent yield strength and outstanding impact toughness at -20°C, enabling it to withstand harsh marine environmental conditions, making it the steel of choice for hull structures, offshore platforms and marine engineering.

2. Meaning of the Designation

D: Steel quality grade (impact toughness grade, indicating good toughness at -20°C).

H: High-strength steel

36: Minimum yield strength of 315 MPa (≈ 36 kg/mm²)

Available Specifications and Dimensions

Product	ABS Grade DH36 Shipbuilding Steel Plate
Certification	ABS
Grade	DH36
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	Key structural components of ship hulls, offshore engineering structures.
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 DH36	≤ 0.18	≤ 0.50	0.90 - 1.60	≤ 0.025	≤ 0.025	≤ 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 = 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 DH36	≤ 50	≥ 355	490 - 630	≥ 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 DH36	≤ 50	-20	≥ 34	≥ 24

Applications

1. Key structural components of the hull

Due to its excellent strength-to-weight ratio, ABS DH32 Shipbuilding Steel Plate is widely used in the load-bearing framework of large vessels, primarily comprising:

1) Plating and decks

The main deck and side plating, which are designed to withstand wave impacts and longitudinal bending stresses on the hull.

2) Bulkheads and Strong Decks

In cargo hold areas, ABS DH32 Shipbuilding Steel Plate provides sufficient structural support whilst reducing the hull’s deadweight by minimising plate thickness, thereby increasing the payload capacity.

3) Bow and Stern Structures

These areas are subjected to severe hydrodynamic loads during navigation; the toughness of ABS DH32 Shipbuilding Steel Plate prevents brittle fracture.

2. Offshore Engineering Structures

In addition to conventional vessels, this steel plays a vital role in both fixed and mobile offshore installations:

1) Offshore Drilling Rigs

Used for support legs, platform decks and connection joints subject to significant environmental loads.

2) Offshore Oil Platform Support Structures

Such as helicopter deck support beams and accommodation block frames.

3) Offshore Wind Turbine Foundations

With the development of renewable energy, ABS DH32 Shipbuilding Steel Plate is increasingly being used for the bases and bridging structures of wind turbine towers.

Other Information

Key features of our ABS Grade DH36 marine steel plates:

1. Authoritative ABS certification

Every batch of products is ABS-certified and complies with ASTM A131, GB/T 712 and IMO maritime standards. We provide full factory test certificates (MTC) and support third-party inspections by BV/SGS, meeting customs clearance and shipyard audit requirements.

2. Excellent low-temperature toughness at -20°C

Through precise control of alloy composition, the steel plate achieves a Charpy V-notch impact energy of ≥34 J at -20°C, effectively resisting severe wave impacts, seawater corrosion and cyclic marine stresses, and preventing brittle fracture.

3. Stable High Mechanical Strength

Minimum yield strength ≥355 MPa, tensile strength 490–630 MPa, and elongation after fracture ≥21%. Particularly suitable for heavy-duty marine engineering structures requiring high structural stability and fatigue resistance.

4. Excellent weldability and formability

With a low carbon equivalent (CEV ≤ 0.40%) and an optimised alloy composition, it is suitable for submerged arc welding, gas welding and on-site welding in marine engineering. The steel plate has a flat surface and a dense internal structure, free from laminar tearing defects.

5. Marine Corrosion Resistance

Strict control of harmful impurities such as P and S, combined with the addition of trace alloying elements including Cu, Cr and Ni, provides excellent resistance to salt spray and seawater corrosion, significantly extending service life in marine saline environments.

6. 100% Ultrasonic Testing

Every batch undergoes 100% ultrasonic testing, and full-thickness quality grades (Z15, Z25, Z35) can be provided in accordance with project requirements, making it suitable for critical marine construction and offshore structural projects.

Why buy ABS Grade DH36 shipbuilding steel plates from us?

1. Non-destructive testing

Ultrasonic testing (UT) in accordance with ASTM A578/A435

2. Third-party inspection

ABS, CCS, DNV, LR, BV and GL class certifications available upon request.

3. Value-added Services

Custom cutting, bending, shot blasting, anti-corrosion coating and bespoke dimensions according to customer drawings.

4. Comprehensive Documentation

ABS certificates, factory test reports, packing lists and bills of lading to ensure smooth customs clearance.

FAQ

# 1Q:What are the delivery conditions and dimensional ranges for ABS Grade DH36 steel plates?

Common delivery conditions: hot-rolled AR, normalised N, TMCP. TMCP is the most popular choice due to its superior toughness and value for money.

Dimension range: thickness 5–150 mm, width 1200–4200 mm, length 3000–18000 mm. Custom cutting and Z-direction properties Z15/Z25/Z35 are available.

# 2Q:Is ABS DH36 shipbuilding plate easy to weld?

ABS DH36 shipbuilding plate offers excellent weldability; due to its low carbon content, it has a low susceptibility to weld cracking. Conventional welding methods (such as submerged arc welding, gas shielded arc welding and manual arc welding) can generally be used.

However, low-hydrogen welding consumables must be used during welding, and preheating is still required for thicker plates. For thick plates or highly constrained joints, post-weld heat treatment (PWHT) may be necessary to relieve residual stresses.

# 3Q:What are equivalent grades of ABS DH36 steel plate?

International equivalent grades:

China: GB/T 712 DH36

USA: ASTM A131 Grade DH36

Classification society equivalent: CCS DH36, DNV DH36, BV DH36, LR DH36

All equivalent grades meet the same chemical and mechanical requirements.

# 4Q:What standards does ABS DH36 marine steel plate comply with?

ABS DH36 marine steel plate complies with the ABS Materials and Welding Rules, meets the IACS Unified Requirements and conforms to the ASTM A131 standard. It is approved by ABS, CCS, DNV, BV, LR and other major classification societies for use in global shipbuilding and offshore engineering projects.

# 5Q:In which parts of a ship is ABS Grade DH36 steel plate primarily used?

Due to its high strength and resistance to low-temperature impact, it is widely used in:

the main deck and outer plating of the hull, hatch coamings on container ships, structural components of offshore drilling platforms, and critical load-bearing areas of vessels operating in cold waters.

# 6Q:Do you offer cutting services for ABS Grade DH36 marine steel plates?

Yes, we offer value-added services, including plasma cutting and laser cutting.

# 7Q:ABS DH36 VS AH36?

Both have the same yield strength (≥355 MPa). The key difference lies in the impact test temperature: AH36 is tested at 0°C, whilst DH36 is tested at -20°C, offering better safety performance in cold environments.

# 8Q:What is the difference between ABS AH36, DH36, EH36 and FH36?

Grade	Impact Test Requirements	Microalloying	Suitable for Marine Environments
AH36	Passes impact testing at 0°C	Optional	Standard marine environments.
DH36	Passes impact testing at -20°C	Optional	Cold-water marine environments.
EH36	Passes impact testing at -40°C	Must contain Nb/V/Ti.	Polar marine environments with extremely low temperatures.
FH36	Passes impact testing at -60°C	Must contain Nb/V/Ti, and restricted N content.	Polar/ice regions and ultra-low-temperature deep-sea environments.