Steel Plates for Shipbuilding - Marine-Grade ASTM A131 Certified

Tianjin TISCO International Trade Co., Ltd.

Verified Custom manufacturer · 5 yrs ·

China

Customizable Rock-bottom price

$625 1-49 ton Base price

$595 50-99 ton 4.8% off

$580 ≥100 ton 7.2% off

Price validity: subject to market conditions

Supplier's customization ability

Drawing-based customization
Sample-based customization
Full customization

Quantity

Minimum order quantity: 1 ton

Shipping total: To be negotiated

Subtotal of goods US$ 625.00

Start order request

Payment and delivery

Payment:: by contract — deposit, balance after your inspection
Lead time:: confirmed with the quotation
Packaging:: standard export packing
Samples:: available on request

Product details

Technical Specifications of Steel Plates Used in Shipbuilding

Property	Parameter	Description
Product Name	Steel Plates Used in Shipbuilding	High-strength structural steel for marine vessels
Material Grade	AH32, DH32, EH32, AH36, DH36, EH36	Classification society approved grades
Standard Compliance	ASTM A131, EN 10025-2, JIS G3106, GB/T 712	Meets international shipbuilding standards
Carbon (C)	≤0.18%	Controlled for weldability and toughness
Manganese (Mn)	0.90-1.60%	Enhances strength and hardenability
Silicon (Si)	0.10-0.50%	Deoxidizer and strength enhancer
Phosphorus (P)	≤0.035%	Controlled for ductility
Sulfur (S)	≤0.035%	Low sulfur for improved weldability
Tensile Strength	440-590 MPa	Minimum tensile strength per grade
Yield Strength	315-390 MPa	Minimum yield strength varies by grade
Elongation	≥22%	Ductility in 50mm gauge length
Impact Energy	≥34J at -20°C to -40°C	Charpy V-notch impact test per grade
Thickness Range	6mm - 100mm	Available thickness options for hull construction
Width Range	1500mm - 4000mm	Standard and wide plate options
Length Range	6000mm - 18000mm	Custom lengths available
Surface Treatment	Shot blasted, primed, or bare	Corrosion protection options
Application	Hull structure, deck, bulkhead, offshore platforms	Marine and offshore engineering applications
Certification	ABS, LR, DNV-GL, BV, CCS, NK	Classification society certificates provided
Delivery Condition	TMCP, Normalized, N+T	Thermo-mechanical or heat treatment options
MOQ	10 tons	Minimum order quantity for shipbuilding plates

Steel Plates for Shipbuilding - Marine-Grade ASTM A131 Certified

Steel plates used in shipbuilding represent a specialized category of structural steel engineered to withstand the demanding marine environment. These marine-grade steel plates serve critical roles in constructing hulls, decks, and structural components of vessels ranging from commercial cargo ships to naval warships. Manufactured to stringent international standards, shipbuilding steel plates deliver exceptional strength-to-weight ratios, superior weldability, and robust corrosion resistance essential for maritime applications. Our mill-direct supply ensures cost-effective pricing while maintaining compliance with classification society requirements including ABS, DNV-GL, Lloyd's Register, and BV certifications.

What is Steel Plates Used in Shipbuilding?

Steel plates used in shipbuilding are hot-rolled structural steel products specifically manufactured according to ASTM A131/A131M standards for marine vessel construction. These plates feature controlled chemical composition with carbon content limited to 0.21% maximum, manganese ranging from 0.80-1.50%, and enhanced impact toughness properties verified at -20°C to -40°C depending on grade classification.

Steel plates used in shipbuilding supplier

Steel Plates Used in Shipbuilding Technical Specifications

Marine-grade steel plates are produced in thickness ranges from 6mm to 150mm with standard widths of 1500mm to 3500mm. Tensile strength requirements vary by grade: Grade A provides 400-520 MPa, Grade AH32 delivers 440-570 MPa, while Grade AH36 achieves 490-620 MPa minimum yield strength. All grades comply with ASTM A131/A131M-17 Section 5 chemical composition limits and EN 10025-2:2019 mechanical property requirements for marine structural applications.

Why Choose Our Shipbuilding Steel Plates

Our shipbuilding steel plates undergo rigorous third-party inspection with full traceability documentation including mill test certificates per EN 10204 3.1 standards. We maintain extensive inventory of ABS-certified grades A, B, D, E, AH32, DH32, EH32, AH36, DH36, and EH36 with factory-competitive pricing 15-20% below market averages. Each plate receives ultrasonic testing per ASTM A435 to ensure internal soundness, while impact testing at specified temperatures guarantees notch toughness compliance for Arctic and tropical service conditions.

Frequently Asked Questions

What is the minimum order quantity (MOQ)?

Our standard MOQ for shipbuilding steel plates is 10 metric tons per specification. For specialized grades such as EH36 or Arctic-service steel, we accommodate orders starting from 5 tons with mill test certificates and classification society approval documentation included at no additional charge.

Steel plates used in shipbuilding manufacturer

Do you provide material test certificates?

Yes, we supply comprehensive EN 10204 3.1 mill test certificates issued by accredited third-party inspection agencies including SGS, BV, and Lloyd's Register. Documentation includes chemical analysis per heat number, mechanical property verification, impact test results at specified temperatures, and ultrasonic testing reports per ASTM A435/A435M standards.

What is the typical delivery time?

Standard grade shipbuilding plates (A, B, AH32, AH36) ship within 15-20 working days from our bonded warehouse inventory. Special grades requiring mill production such as EH40 or Arctic-grade steel require 45-60 days lead time including manufacturing, quality inspection, and classification society survey approval processes.

Steel plates used in shipbuilding China

Can you cut to custom sizes?

Our fabrication facility provides precision plasma and oxy-fuel cutting services with tolerances of ±2mm on linear dimensions. We execute custom cutting per approved nesting plans, including beveling preparation for welding at angles from 30° to 45° according to shipyard specifications. All cut edges receive deburring and dimensional inspection prior to shipment with cutting certificates provided.

Get a Competitive Quote for Steel Plates Used in Shipbuilding

Contact our marine steel specialists today to receive factory-direct pricing on ASTM A131 certified shipbuilding plates. Our technical team provides material selection guidance, classification society approval assistance, and logistics coordination for worldwide delivery to shipyards and marine fabrication facilities. Request your detailed quotation with mill test certificates and delivery schedule within 24 hours.

Ratings & Reviews

4.5

Based on 8 reviews

5 5

4 2

3 1

2 0

1 0

Chris Martin

Canada

2025-09-08

Acceptable Quality with Delivery Delay Resolved

Purchased 7 tons of Grade A plates (12mm thickness) for inland vessel repair work. Material quality was acceptable with ASTM A131 compliance confirmed by mill certificates. Yield strength at 265 MPa met minimum requirements. Initial delivery was delayed by 8 days due to logistics issues, but supplier arranged expedited shipping at no extra cost. One certificate had unclear stamp requiring re-issuance. Plates required additional surface cleaning before welding. Price was fair for the Great Lakes market. Issue resolution was professional and timely.

William Taylor

Australia

2025-09-25

Superior Grade E Plates for Patrol Boat Project

Ordered 16 tons of Grade E plates (6mm, 10mm, and 14mm thickness range, 2200mm width) for patrol boat hull and superstructure. All material supplied with Lloyd's Register approval and EN 10204 3.1 certificates from SGS inspection. Impact testing at -40°C exceeded requirements with 58J average across all samples. Supplier provided technical consultation on material selection for tropical saltwater exposure. Custom cutting completed per our CAD files with beveling preparation. Delivered to Perth shipyard in 19 days including sea freight. Exceptional corrosion resistance performance in service.

Hans Mueller

Germany

2025-10-12

Reliable AH32 Plates for Research Vessel

Procured 9 tons of Grade AH32 plates (8mm and 12mm thickness) for scientific research vessel construction. Material certificates showed compliance with DNV-GL requirements. Carbon content at 0.18% provided good weldability for our automated welding systems. Pricing was competitive at 18% below German domestic suppliers. Delivery took 21 days which met our production schedule. One plate had minor edge waviness within tolerance but required additional straightening. Overall satisfied with quality for Arctic service application at -30°C operating temperature.