TB/T 1979 09CuPCrNi-A atmospheric corrosion resistant steel plates are widely used corten steel materials. Gnee steel supply 09CuPCrNi-A steel plates to users to make steel structures, such as railways, vehicles, bridges and towers, which are exposed to the atmosphere for a long time.
TB/T 1979 09CuPCrNi-A atmospheric corrosion resistant steel plate chemical composition
| C max | Si | Mn | P | S max | Cu | Ti | Cr | Ni | Re |
| 0.12 | 0.25-0.75 | 0.20-0.50 | 0.060-0.120 | 0.020 | 0.25–0.50 | - | 0.30-125 | 0.12-0.65 | - |
TB/T 1979 09CuPCrNi-A atmospheric corrosion resistant steel plate mechanical property
| Grade | Yield Strength (MPa) min. | Tensile Strength (MPa) min. | Elongation min. % |
| TB/T 1979 09CuPCrNi-A | 345 | 480 | 24 |
TB/T 1979 09CuPCrNi-A atmospheric corrosion resistant steel plates are premium-grade materials designed to deliver exceptional strength, toughness, and weathering performance in demanding industrial and outdoor environments. By incorporating alloying elements such as copper (Cu), chromium (Cr), and nickel (Ni), the steel forms a dense and stable oxide film on its surface when exposed to the atmosphere. This protective layer effectively prevents further corrosion and ensures a long service life even under harsh environmental conditions.
These plates are widely applied in the manufacture of containers, railway vehicles, oil derricks, seaport structures, offshore oil production platforms, and chemical equipment-particularly in installations exposed to hydrogen sulfide (H₂S) or other corrosive media. Their excellent mechanical properties, weldability, and formability make them suitable for complex structural designs and heavy-duty engineering applications.
In addition to industrial uses, 09CuPCrNi-A steel is also valued for its aesthetic weathered appearance, making it an ideal choice for architectural façades, outdoor sculptures, and landscape structures where both beauty and durability are desired. It requires minimal maintenance and does not need periodic repainting, which significantly reduces long-term operational costs.
At Gnee Steel, we supply high-quality 09CuPCrNi-A steel plates with competitive pricing, fast delivery, and customized specifications to meet your project needs. Whether you are building large-scale infrastructure or specialized chemical containers, Gnee ensures you receive cost-efficient, reliable, and high-performance weathering steel solutions.
