Our Seawater-Resistant Incoloy 25-6Mo Plates are a total rockstar for marine applications, and we’re pumped to offer them for the toughest ocean challenges. This nickel-chromium-molybdenum alloy, boosted with nitrogen, is built to laugh off seawater corrosion and keep marine setups running strong.
These plates are a perfect fit for anything in the marine world—think shipbuilding, offshore platforms, or seawater piping systems. Incoloy 25-6Mo is a beast when it comes to resisting corrosion, especially in salty, chloride-heavy environments that would chew through lesser materials. It’s also super strong, so it can handle the heavy stresses you’ll find in marine structures, whether it’s a deep-sea platform or a ship hull taking on rough waves.
Specification

Item | 800 | 800H | 800HT | 825 | 925 |
C |
≤0.1 | 0.05-0.1 | 0.06-0.1 | ≤0.05 | ≤0.03 |
Mn | ≤1.5 | ≤1.5 | ≤1.5 | ≤1 | ≤1 |
Fe | rest | rest | rest | rest | rest |
P | -- | -- | -- | ≤0.02 | ≤0.03 |
S | ≤0.015 | ≤0.015 | ≤0.015 | ≤0.03 | ≤0.03 |
Si | ≤1 | ≤1 | ≤1 | ≤0.5 | ≤0.5 |
Cu | ≤0.75 | ≤0.75 | ≤0.75 | 1.5-3 | 1.5-3 |
Ni | 30-35 | 30-35 | 30-35 | 38-46 | 42-46 |
Al | 0.15-0.6 | 0.15-0.6 | 0.15-0.6 | 0.2-1 | 0.15-0.5 |
Ti | 0.15-0.6 | 0.15-0.6 | 0.15-0.6 | 0.6-1.2 | 1.9-2.4 |
Cr | 19-23 | 19-23 | 19-23 | 19.5-23.5 | 19.5-23.5 |
Mo | -- | -- | -- | 2.5-3.5 | 2.5-3.5 |
Size dimension range:
Wire: 0.01-10mm
Strip: 0.05*5.0-5.0*250mm
Bar: φ4-50mm; Length 2000-5000mm
Pipe: φ6-273mm; δ1-30mm; Length 1000-8000mm
Sheet: δ0.8-36mm; Width 650-2000mm; Length 800-4500mm

Marine users need materials they can trust, and that’s exactly what we’re delivering. They want something that can stand up to constant saltwater exposure without pitting or cracking, and our plates do just that. They also need durability in high-stress and high-temperature conditions, and Incoloy 25-6Mo holds up like a champ, staying solid up to 600°C. That means less maintenance and more uptime, which is a big win for anyone working on the water.
The marine industry as of May 2025 is all about tackling tougher environments, with trends showing more deep-sea exploration and offshore energy projects. There’s a big push for materials that can last longer and handle extreme conditions, especially with the rise of sustainable ocean tech like wave energy. Our Incoloy 25-6Mo Plates are right in the mix, helping companies build reliable, long-lasting marine systems that stand up to the elements.
With our Seawater-Resistant Incoloy 25-6Mo Plates, you’re getting a material that’s tough, corrosion-resistant, and ready for any marine challenge. It’s the perfect choice for keeping your ocean projects strong and steady, no matter how rough the seas get.
About Us:
Our 12,000㎡ factory is equipped with complete capabilities for research, production, testing, and packaging. We strictly adhere to ISO 9001 standards in our production processes, with an annual output of 1,200 tons. This ensures that we meet both quantity and quality demands. Furthermore, all products undergo rigorous simulated environment testing including high temperature, high pressure, and corrosion tests before being dispatched, ensuring they meet customer specifications. We also provide chemical analysis reports for every FeCrAl alloy, NiCr alloy, and other products purchased.
For all our clients, we offer timely and multilingual after-sales support and technical consulting, helping you resolve any issues swiftly and efficiently.

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FAQ:
1.What is Incoloy 25-6Mo Plate made of?
It’s a nickel-chromium-molybdenum alloy with added nitrogen, designed for superior corrosion resistance.
2.Why is it used in marine applications?
Its resistance to seawater corrosion and pitting makes it ideal for harsh marine environments.
3.Can Incoloy 25-6Mo handle saltwater exposure?
Yes, it’s specifically engineered to resist corrosion in chloride-rich saltwater conditions.
4.What marine components are made from these plates?
They’re used for shipbuilding, offshore platform structures, and seawater piping systems.
5.Does it perform well under high stress?
Absolutely, its high strength makes it perfect for heavy-duty marine structural applications.
6.How does it hold up in high temperatures?
It maintains stability and performance in elevated temperatures, up to 600°C.
7.What industries besides marine use Incoloy 25-6Mo?
It’s also used in chemical processing, oil and gas, and desalination plants.
8.How long do these plates last in marine environments?
With their corrosion resistance and durability, they’re built to last for decades in harsh conditions.