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Henan BEBON international co.,ltd located in zhengzhou ,henan province of china. Since it was established in 2008, Henan BEBON has earned an outstanding reputation for its professional exporting shipbuilding steel.About the products,we mainly specialized in steel products for shipbuilding which have been approved by some authoritative classification societies,likeLR,BV,ABS,DNV,GL and so on . Besides, we have three big warehouses--Zhengzhou,Tianjin and shanghai.
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SPA-C Weathering Steel: Properties, Composition, and Applications

Concept

SPA-C is a Japanese-standard weathering steel, designed for excellent atmospheric corrosion resistance. It forms a protective rust layer (patina) when exposed to the elements, which prevents further corrosion and reduces maintenance needs. This makes it ideal for outdoor structures and applications in harsh environments.

Characteristics

SPA-C offers high durability, good weldability, and excellent weather resistance. Its ability to develop a stable rust layer eliminates the need for painting or coating, making it a cost-effective and sustainable choice. The steel also exhibits good mechanical properties, including high tensile strength and impact toughness.

Chemical Composition

SPA-C contains alloying elements that enhance its weathering properties. Key components include:

Carbon (C): ≤0.12%

Silicon (Si): 0.25-0.75%

Manganese (Mn): 0.20-0.50%

Phosphorus (P): 0.07-0.15%

Sulfur (S): ≤0.035%

Copper (Cu): 0.25-0.55%

Chromium (Cr): 0.30-1.25%

Nickel (Ni): 0.12-0.65%

Dimensions

SPA-C is available in thicknesses ranging from 2 mm to 50 mm, with widths up to 2500 mm and lengths up to 12000 mm. Custom dimensions can also be produced to meet specific project requirements.

Delivery Condition

SPA-C is typically supplied in hot-rolled or normalized conditions, ensuring optimal mechanical properties and surface quality for structural use.

Applications

SPA-C is widely used in bridges, shipping containers, railway vehicles, and architectural structures. Its corrosion resistance and aesthetic rust-like appearance make it a preferred choice for projects requiring durability and low maintenance in outdoor environments.