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Help Center316L Stainless Steel Plate for Marine Applications 2mm-6mm Thickness Corrosion Resistant
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Welcome to Hemaokang Steel (Shandong) Co., Ltd. As a trusted supplier of high-quality stainless steel products, we are pleased to introduce our 316L Stainless Steel Plate for Marine Applications, available in thicknesses from 2mm to 6mm. This plate is specifically engineered to withstand the harsh environments of marine and offshore industries, offering exceptional corrosion resistance against saltwater, chemicals, and extreme weather conditions. With our advanced manufacturing capabilities and strict quality control, we ensure that every plate meets the rigorous demands of shipbuilding, coastal infrastructure, and marine equipment.
Our 316L stainless steel plate is produced using premium raw materials and state-of-the-art rolling mills, resulting in consistent mechanical properties and a smooth surface finish. The low carbon content (max 0.03%) of 316L significantly reduces the risk of carbide precipitation during welding, making it ideal for heavy structural applications. Whether you need plates for boat hulls, dock components, oil rigs, or desalination plants, our product delivers longevity and reliability.
At Hemaokang Steel, we understand that marine projects demand precision and durability. That is why we offer a wide range of thicknesses (2mm to 6mm) and customizable dimensions to fit your specific requirements. Our plates are available in standard sizes or can be cut to your exact specifications with our in-house laser cutting and shearing services. We also provide surface treatments such as pickling, passivation, and coating to enhance corrosion resistance further.
Key Features & Technical Specifications
- Superior Corrosion Resistance: The 316L grade contains molybdenum (2-3%), which greatly improves resistance to chlorides, seawater, and acidic environments.
- Excellent Weldability: Low carbon content minimizes intergranular corrosion after welding, suitable for both thin and thick sections.
- High Strength & Toughness: Yield strength of 170 MPa minimum, tensile strength of 485 MPa minimum, ensuring structural integrity under stress.
- Wide Thickness Range: 2mm, 3mm, 4mm, 5mm, and 6mm plates available, with thickness tolerance per ASTM A240.
- Customizable Dimensions: Widths from 1000mm to 2500mm, lengths from 2000mm to 12000mm, or as per your drawing.
- Various Surface Finishes: 2B (cold rolled, bright), BA (bright annealed), No.1 (hot rolled, annealed), and mirror finish for aesthetic requirements.
- Compliance with International Standards: Manufactured according to ASTM A240, JIS G4304, EN 10028-7, and other standards upon request.
- 100% Mill Test Certificates: Each batch is tested for chemical composition, mechanical properties, and corrosion resistance, with certificates provided.
Typical Applications
- Shipbuilding – hulls, decks, bulkheads, and superstructures
- Offshore Platforms – structural components, handrails, and piping
- Marine Equipment – propellers, shafts, valves, and pumps
- Coastal Infrastructure – seawalls, jetties, and bridge components
- Desalination Plants – evaporators, condensers, and piping systems
- Chemical Processing – tanks, reactors, and heat exchangers
Mechanical & Chemical Properties (Typical)
| Property | Value |
| Tensile Strength (MPa) | ≥ 485 |
| Yield Strength (0.2% offset, MPa) | ≥ 170 |
| Elongation (%) | ≥ 40 |
| Hardness (HRB) | ≤ 95 |
| Carbon (C) % | ≤ 0.03 |
| Chromium (Cr) % | 16.0 – 18.0 |
| Nickel (Ni) % | 10.0 – 14.0 |
| Molybdenum (Mo) % | 2.0 – 3.0 |
Our 316L plates undergo rigorous testing including ultrasonic testing, pitting corrosion test, and intergranular corrosion test (per ASTM A262). This ensures that every plate delivers consistent performance in the most demanding marine environments.
Why Choose Hemaokang Steel?
Since our establishment in 2025, Hemaokang Steel (Shandong) Co., Ltd. has rapidly grown into a global supplier with annual export values reaching US$50 million – US$100 million. Our team of 51-100 dedicated professionals ensures that every order is handled with precision and care. We are proud to hold ISO9001 certification, which reflects our commitment to quality management systems. Our products are exported to over 30 countries including North America, South America, Europe, Southeast Asia, Africa, Oceania, and the Middle East, serving diverse marine and industrial sectors.
We offer competitive pricing, flexible payment terms, and reliable logistics to ensure your plates arrive on time. Our technical support team is available to assist with material selection, welding procedures, and post-installation care. Whether you need a small custom order or a large volume shipment, we are ready to serve you.
Contact us today for a quote or to discuss your project requirements. Let Hemaokang Steel be your partner in marine-grade stainless steel solutions!
Frequently Asked Questions (FAQ)
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Q: What is the difference between 316 and 316L stainless steel?
A: 316L has lower carbon content (≤0.03%) compared to 316 (≤0.08%). This makes 316L more resistant to intergranular corrosion after welding, making it the preferred choice for welded marine structures. -
Q: Can you supply plates with thicknesses outside 2mm-6mm?
A: Yes, we can supply other thicknesses from 1mm up to 100mm or more. Please contact our sales team with your specific requirements. -
Q: Do you provide mill test certificates (MTC)?
A: Absolutely. Every shipment comes with a mill test certificate listing chemical composition, mechanical properties, and corrosion test results, traceable to the heat number. -
Q: What surface finishes are available for marine applications?
A: For marine use, we recommend 2B (cold rolled, bright) or No.1 (hot rolled, annealed) finishes. We also offer pickled and passivated surfaces for enhanced corrosion resistance. -
Q: How do you ensure the plates are resistant to seawater corrosion?
A: Our 316L plates are manufactured to strict ASTM A240 standards and undergo pitting corrosion tests (ASTM G48) to verify resistance in chloride environments. Molybdenum content is carefully controlled. -
Q: What is the minimum order quantity (MOQ) for these plates?
A: Our MOQ is typically 1 ton for standard sizes. For custom sizes, MOQ may vary. We are flexible and can accommodate small trial orders. -
Q: Can you cut the plates to my required dimensions?
A: Yes, we offer precision cutting services including laser cutting, plasma cutting, and shearing, with tolerances within ±1mm. We can also provide edge preparation for welding. -
Q: How long does shipping take to overseas destinations?
A: Shipping time depends on the destination. For most countries, sea freight takes 25-45 days. We work with reliable freight forwarders and can arrange express delivery for urgent orders.
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