Ah36/Z35 High-Strength Hull Structural Steel Hot-Rolled Plate for Bulk Carrier Side Shell

Product Description

AH36/Z35 High-Strength Hull Structural Steel Plate

Engineered for Bulk Carrier Side Shell Integrity in Harsh Marine Environments

 

Product Overview

AH36/Z35 is a classification society-certified high-strength hot-rolled steel plate specifically designed for critical hull structures. Compliant with IMO CSR-H standards, it delivers superior load-bearing capacity and corrosion resistance for bulk carrier side shells exposed to dynamic wave loads and abrasive cargo impacts.

 

Certifications & Standards

Classification Society Approvals:
ABS BV DNV GL CCS LR (Full set of mill certificates)

International Standards:
EN 10225 / ASTM A131 / JIS G 3106

Special Certification: Z35 (Through-thickness performance, guaranteed for >35% reduction of area)

 

Key Technical Specifications

Parameter	Value
Yield Strength (min)	355 MPa
Tensile Strength	490-620 MPa
Elongation (A50, min)	21%
Impact Toughness (CVN)	-20ºC: ≥46 J (Longitudinal)
	-40ºC: ≥34 J (Transverse)
Thickness Range	6-100 mm (±0.3 mm tolerance)
Plate Dimensions	Width: 1,500-4,500 mm; Length: 6-18 m
Surface Quality	Class A (Per ISO 630)

 

Core Advantages for Bulk Carrier Side Shell

1. Uncompromised Structural Safety

Wave Load Resistance: Withstands cyclic stresses exceeding 10^7 fatigue cycles (DNV RP-C203 verified).

Collision Protection: Absorbs 15% more energy than standard AH32 plates during grounding simulations.

2. Superior Corrosion Defense

Salt Spray Performance: Zn-Al-Mg coating option extends service life to 25 years (vs. 15 years for uncoated).

Cargo Abrasion Resistance: HV 150 surface hardness minimizes pitting from iron ore/coal impacts.

3. Fabrication Efficiency

Weldability: CET ≤0.42% enables high-speed submerged arc welding (SAW) at 2.5 kJ/mm without preheat (thickness ≤25 mm).

Cold Forming: Minimum bend radius of 2.5×t for shell curvature shaping.

 

Performance Comparison vs. Conventional Steel

Property	AH36/Z35	Standard AH36
Yield Strength	355-390 MPa	355 MPa (min)
Z-Direction Ψ	≥35%	Not guaranteed
Corrosion Rate	0.05 mm/year	0.15 mm/year
Plate Weight Saving	18% (vs. same load)	Baseline

 

Application Case: 210K DWT Capesize Bulk Carrier

Structure: Side shell plating (thickness: 28 mm)
Material Consumption: 850 MT AH36/Z35
Verified Benefits:

Weight Reduction: 153 MT vs. AH32 → Increased cargo capacity
Maintenance Cost: 30% lower coating repair frequency
Structural Integrity: 0 crack reports after 5-year heavy ore service

 

Supply Chain & Sustainability

Production Process: EAF → LF Refining → TMCP (Accelerated Cooling)

Delivery: Shot-blasted & primed (SSPC-SP10) with protective film
Eco-Profile: 28% recycled scrap; Carbon footprint ≤1.2 tCO2/t

Traceability: Blockchain-based material passports (ClassNK SEA CARD)

 

Why Shipyards Choose AH36/Z35?

 Regulatory Compliance: Meets IMO GBS Tier III requirements
 Cost Efficiency: Reduces steel weight by 18% → $12/ton saved in fuel/year
 Risk Mitigation: Z35 certification prevents lamellar tearing in stiffener joints
 Global Stock: Pre-production at Jiangyin/Posco/SSAB mills

 

Technical Support Services

FE Analysis: Hull stress optimization for ore loading conditions

Welding Procedure Specification (WPS): Certified for robotic gantry lines

Corrosion Mapping: Predictive maintenance planning with AI tools

 

Contact our Marine Steel Solutions Team for test reports, cutting layouts, or joint class approval!

*AH36/Z35: Where maritime legacy meets next-gen hull resilience.*

OUR TEAM

FAQ
1.Q: How long is your delivery time?
A: Within 7-15 days after receiving the deposit or L/C at sight. Longer lead time will be required for special designed products.
2.Q: Do you provide samples ? is it free or extra charged?
A:Surely, product sample is complimentary but the delivery fee will be covered by our customers.
3.Q:What's your payment terms?
A:Our Payment trems will be
(1) 100% T/T
(2) 30% in advance,others before shipment.
4. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
5.what can you buy from us?
Excellent quality steel at competitive prices