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ABS Grade DH32 Shipbuilding Steel Plate - High-Strength Marine Steel

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ABS Grade DH32 Steel Plates – A Reliable Choice for Shipbuilding and Offshore Platforms. ABS Grade DH32 high-strength marine steel plates, sourced from ABS-approved mills, comply with ABS standards for high-strength structural applications. This grade is specifically designed for low-temperature environments and offers excellent weldability, making it widely used in hull structures, bulk carriers and offshore drilling platforms. As a specialist Chinese steel plate supplier, Yuxin Steel supplies ABS-certified DH32 shipbuilding steel plates, providing reliable material solutions with high strength, low-temperature resistance and excellent weldability for global shipbuilding, offshore engineering and marine structural projects.

Certification :
ABS Rules
Grade :
ABS Grade DH32
Thickness :
5.0 - 150.0 mm
Width :
1500.0 - 4000.0 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 DH32 shipbuilding steel plate?

ABS Grade DH32 shipbuilding plate is a high-strength, low-alloy structural steel specifically designed for shipbuilding and offshore structural applications. It is certified by the American Bureau of Shipping (ABS) and meets the stringent safety and performance requirements of the global shipping industry. It has undergone rigorous Charpy V-notch impact testing at -20°C, ensuring excellent toughness in cold marine environments. It is an ideal material for the construction of vessels and offshore platforms operating in cold waters, and is widely used in hulls, decks, bulkheads and offshore platform components, providing stable structural support for a variety of vessels and offshore facilities.

2. Meaning of the Designation

ABS: Certified by the American Bureau of Shipping

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

H: High-strength steel

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

Available Specifications and Dimensions

Product	ABS Grade DH32 Shipbuilding Steel Plate
Certification	ABS
Grade	DH32
Material Category	Heigh-strength Structural Steel for Shipbuilding
Thickness	5 - 150 mm
Width	1500 - 4000 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	5 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 DH32	≤ 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 %)	≤ 0.36	≤ 0.38

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 DH32	≤ 50	≥ 315	450 - 570	≥ 22

Impact energy KV2 (Charpy V-notch Impact Test)

Grade	Thickness, mm	Temperature, ℃	Impact Energy, KV₂ / J
Grade	Thickness, mm	Temperature, ℃	Longitudinal	Transverse
ABS Grade DH32	≤ 50	-20	≥ 31	≥ 22

Applications

ABS Grade DH32 shipbuilding steel plates, with their excellent overall performance—particularly their outstanding low-temperature toughness and high strength—are widely used in the global shipping industry and related sectors, primarily including:

1. Shipbuilding

Hull structures, decks, keels, frames, bulkheads and beams for polar research vessels, icebreakers, cargo ships, container ships, oil tankers, bulk carriers and general merchant vessels operating in cold regions. It is particularly suitable for outer plating and deck structures on vessels operating in low-temperature environments of -20°C.

2. Offshore Engineering

Offshore oil drilling platforms, platform pipe joints, offshore wind power structures, coastal terminal facilities and FPSO vessels. It is widely used in critical load-bearing components such as platform jackets and legs, with a fatigue life exceeding 25 years, making it suitable for harsh marine environments such as North Sea offshore platforms.

3. Special Marine Projects

Support structures for LNG carrier cargo holds, as well as structural components for submarines and other specialised marine equipment.

4. Other Applications

Maintenance and replacement of existing ship structural components, structural components for port machinery, and low-temperature-resistant structural components in coastal engineering and bridge construction, ensuring stability under heavy loads and in harsh environments.

Other Information

Why Choose Our ABS Grade DH32 Shipbuilding Steel Plate?

1. ABS Certification

Our DH32 shipbuilding steel plates have been officially certified by the American Bureau of Shipping (ABS). Material Test Certificates (MTCs) are provided with each shipment, and we support third-party testing.

2. Rigorous Quality Control System

We specialise in the production of high-end shipbuilding steel plates, ensuring a stable supply and consistent quality for every batch.

3. On-Time Delivery, Global Coverage

Leveraging our extensive experience in international logistics, we can ship to over 80 countries and regions worldwide, ensuring on-time delivery.

4. Customised Solutions

We can tailor thickness, width, length, delivery condition, surface treatment and additional testing requirements to meet your specific needs. Our professional technical team will design the most suitable ABS Grade DH32 shipbuilding steel plate solution for you, reducing processing costs and enhancing construction efficiency.

5. Competitive Pricing

We offer high-quality ABS Grade DH32 shipbuilding steel plates at reasonable prices, helping you control project costs and enhance your competitiveness in the global maritime market.

6. Comprehensive After-Sales Service

Our dedicated after-sales team provides a one-stop service ranging from pre-sales consultation and product inspection to post-sales technical support.

FAQ

Q1:

What is the main difference between ABS Grade EH32 and DH32?

The main difference between the two lies in the minimum impact test temperature.

DH32: The impact test temperature is -20°C.

EH32: The impact test temperature is -40°C, which is a more stringent requirement.

Consequently, EH32 is suitable for lower ambient temperatures or colder marine environments, whilst DH32 is suitable for milder marine environments.

Q2:

How should one choose between DH32 and DH36 shipbuilding steel plates?

The choice depends primarily on strength requirements:

DH32: Yield strength 315 MPa. Suitable for most standard hull structures and offers good value for money.

DH36: Yield strength 355 MPa. Although the impact temperature is also -20°C, DH36 offers higher strength.

Recommendation: If the design allows for weight reduction, or for critical areas subject to high stress (such as hatch coamings and deckhead plates), the design may specify DH36; for standard hull plating, DH32 is usually sufficient and more economical.

Q3:

What is the corrosion resistance of ABS Grade DH32?

ABS Grade DH32 is essentially a carbon-manganese steel and does not form a protective oxide layer like stainless steel. In marine environments, it must be used in conjunction with marine paint (anti-corrosion coating) and sacrificial anodes (cathodic protection). Typically, prior to processing, the steel plates undergo shot blasting or sandblasting and are coated with a primer.

Q4:

What are the typical delivery conditions (heat treatment processes) for ABS DH32 steel plates?

The mechanical properties of ABS Grade DH32 shipbuilding steel plates are typically achieved through controlled rolling and heat treatment. The most common delivery conditions include:

TMCP: This is an advanced controlled rolling process that yields good low-temperature toughness and weldability.

Normalizing: For thicker gauges, normalising is usually employed to refine the grain structure.

Controlled rolling: Improving production efficiency.

Q5:

How to verify the quality of ABS DH32 before order?

Buyers should confirm three key documents and inspections:

1. Original classification society mill certificate.

2. Complete MTC mill test report with chemical and mechanical properties.

3. UT ultrasonic inspection and surface quality check to ensure no internal lamination or surface defects.

Q6:

Is ABS DH32 steel easy to weld?

Yes, ABS DH32 has excellent weldability with low carbon equivalent. It is compatible with SAW, GMAW and SMAW welding processes.

Q7:

Can ABS DH32 be used for offshore platforms?

Yes, DH32 is suitable for structural components on offshore platforms subject to high loads and operating at ambient temperatures of no less than -20°C. Where structures are exposed to extremely low temperatures or involve critical connection joints (such as TKY joints), it is usually required to use higher-grade EH32 steel or steel plates with Z-direction properties (Z25/Z35) to ensure resistance to laminar tearing.

Q8:

What is the difference between ABS DH32 and AH32?

Both have the same yield strength; the main difference lies in the impact test temperature. AH32 is tested at 0°C, whilst DH32 is tested at -20°C, making DH32 more suitable for colder or harsher sea conditions.

Q9:

What is the difference between ABS AH32, DH32, EH32 and FH32?

ABS Grade AH32, DH32, EH32 and FH32 shipbuilding steel plates have the same strength. The core difference is low-temperature impact resistance.

Grade	Impact Test Temperature	Impact Energy, KV₂ / J	Suitable for Marine Environments
ABS AH32	0°C	31(Longitudinal), 22(Transverse)	Standard marine environments.
ABS DH32	-20°C	31(Longitudinal), 22(Transverse)	Cold-water marine environments.
ABS EH32	-40°C	31(Longitudinal), 22(Transverse)	Polar marine environments with extremely low temperatures.
ABS FH32	-60°C	31(Longitudinal), 22(Transverse)	Polar/ice regions and ultra-low-temperature deep-sea environments.