Buy Marine-Grade Stainless Steel Sheet for coastal, offshore, and saltwater applications. High corrosion resistance, durability, and available in custom sizes
The Marine-Grade Stainless Steel Sheet is engineered for extreme durability and long-term corrosion resistance in harsh marine, coastal, and saltwater environments. Typically manufactured from high-chromium, high-nickel, and molybdenum-enhanced stainless steel alloys like 316/316L or 2205 Duplex Stainless Steel, this sheet material offers excellent protection against pitting, crevice corrosion, and chloride-induced corrosion.
Marine-Grade Stainless Steel Sheets are widely used in shipbuilding, offshore platforms, coastal structures, marine hardware, and chemical processing equipment where exposure to saltwater and aggressive conditions demand superior performance.
Exceptional Corrosion Resistance
Resists pitting, crevice corrosion, and stress-corrosion cracking caused by saltwater, chlorides, and marine atmospheres.
Long-Term Durability
Provides excellent strength and corrosion protection even after years of constant exposure to seawater and coastal air.
Excellent Weldability
Easily fabricated using standard welding processes without compromising corrosion resistance.
Outstanding Formability
Can be cut, bent, and shaped into complex components while maintaining strength and corrosion resistance.
Versatile Surface Finishes
Offered in a wide range of finishes for both functional and decorative marine applications.
Low Maintenance
Minimizes repair and replacement costs, even in highly corrosive environments.
Shipbuilding and boat components
Offshore oil & gas platforms
Coastal and harbor structures
Marine railings, ladders, and hardware
Desalination plants
Seawater piping and heat exchangers
Marine HVAC systems
Water treatment equipment
Architectural facades in coastal cities
Marine-grade food processing and fishery equipment
| Property | Specification |
|---|---|
Material | 316 / 316L / 2205 Duplex Stainless Steel |
Standard | ASTM A240 / A666, EN 10088, JIS G4304 |
Tensile Strength | 515–750 MPa |
Yield Strength | 200–550 MPa |
Elongation | ≥ 40% |
Hardness | ≤ 95 HRB |
Thickness Range | 0.5mm – 50mm |
Sheet Width | Up to 2000mm |
Length | Standard 2000mm, 2440mm, 3000mm or custom |
Surface Finish | 2B, BA, No.1, No.4, HL, Mirror |
Weldability | Excellent |
Corrosion Resistance | Excellent (marine-grade level) |
| Chemical | |
|---|---|
Chromium (Cr) | 16.0–23.0% (depending on grade) |
Nickel (Ni) | 10.0–14.0% (depending on grade) |
Molybdenum (Mo) | 2.0–3.5% (depending on grade) |
| Finish | Description | Application |
|---|---|---|
2B | Smooth, matte finish | General marine fabrication |
BA | Bright annealed | Decorative marine interiors |
No.1 | Hot rolled, annealed & pickled | Heavy structural marine applications |
No.4 | Brushed satin | Marine railings, architectural elements |
HL | Hairline finish | Decorative and architectural panels |
Mirror | Polished reflective surface | High-end marine and yacht interiors |
316 Stainless Steel:
The most commonly used marine-grade stainless steel. Offers excellent corrosion resistance due to its molybdenum content, especially against chlorides and saltwater.
316L Stainless Steel:
Low carbon version of 316, preferred for heavy welding applications where intergranular corrosion needs to be minimized.
2205 Duplex Stainless Steel:
Superior strength, pitting resistance, and excellent stress-corrosion cracking resistance — ideal for heavy-duty marine and offshore applications.
ASTM A240 / A480 / A666
EN 10088-2
JIS G4304 / G4305
ISO 9001 Certified Production
Mill Test Certificates (MTC) Provided
RoHS & REACH Compliant
PVC protective film for polished surfaces
Waterproof packaging with anti-corrosion materials
Edge protection and wooden crates for safe transport
Custom cutting, slitting, and polishing services available
Global shipping with fast and reliable logistics
Store indoors or under cover in dry environments
Use non-marking lifting equipment to protect finishes
Avoid prolonged contact with carbon steel to prevent contamination
Long-lasting performance in highly corrosive marine and saltwater environments
Suitable for welding, bending, forming, and precision cutting
Wide range of thicknesses, finishes, and grades for every application
Low maintenance and lifecycle cost even in harsh outdoor exposure
Superior hygiene for marine food processing, fisheries, and aquaculture
Highly durable for both structural and decorative uses
Marine-grade stainless steel contains higher chromium, nickel, and molybdenum, providing superior resistance to chlorides, pitting, and crevice corrosion caused by saltwater.
316 and 316L are widely used for general marine applications, while 2205 Duplex is recommended for heavy-duty, high-stress offshore structures.
Yes, they offer excellent weldability using standard techniques while maintaining corrosion resistance after welding.
Absolutely. We provide custom cutting, slitting, polishing, and surface finishes tailored to your project requirements.
Yes. Full Mill Test Certificates (MTC) and compliance documentation are provided with every order.
Yes, grades like 316 and 316L are FDA-approved for food processing, marine food handling, and sanitary applications.
These Product are packed using seaworthy export packaging to ensure protection during transit. Each coil is wrapped with waterproof paper, plastic film, and steel sheet, secured with high-tensile steel straps, and placed on wooden pallets for stability. Edge protectors are used to prevent damage. These Product are safely loaded for efficient domestic and international delivery, ensuring they arrive in perfect condition.
Generally, our delivery time is within 7-45 days, if there is a great demand or special circumstances, it may be delayed.
Each piece of products is manufactured by certified workshops, inspected by Linxu piece by piece according to national QA/QC standard. We also could issue the warranty to customer to guarantee the quality.
Yes absolutely we accept.
The sample could can provide for customer with free, but the courier freight will be covered by customer account.
Yes, we promise to provide best quality products and delivery on time. Honesty is our company’s tenet.
We are professional manufacturer with rich experience, and our company also is a very professional a trade company for steel products. We can also provide a wide range of steel products.
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