SPA-C steel is a high-quality atmospheric corrosion-resistant steel. The "C" in SPA-C indicates that it is cold-rolled, with a thickness range of 0.6 mm to 2.3 mm.
Compared with SPA-H, SPA-C has slightly lower strength but still provides excellent corrosion resistance and durability, making it suitable for many industrial and structural applications.
Products Applications
SPA-C steel plates are widely used in engineering machinery, towers, containers, and vehicles. Its combination of corrosion resistance and mechanical performance makes it ideal for components exposed to outdoor environments or atmospheric corrosion.
Manufacturers producing weathering steel in China, including major steel mills, can supply SPA-C plates in various specifications to meet project requirements.
Chemical Composition
SPA-C steel contains carefully controlled alloying elements to ensure optimal properties:
Carbon (C): ≤ 0.12%
Manganese (Mn): ≤ 0.6%
Phosphorus (P): 0.007–0.15%
Sulfur (S): ≤ 0.035%
Silicon (Si): 0.25–0.75%
Nickel (Ni): ≤ 0.65%
Chromium (Cr): 0.30–1.25%
Copper (Cu): 0.25–0.55%
These elements enhance corrosion resistance, toughness, and structural integrity for outdoor and high-stress applications.
Mechanical Properties
SPA-C steel offers reliable mechanical performance, with:
Yield strength ≥ 315 MPa
Tensile strength ≥ 450 MPa
Elongation ≥ 26%
These properties allow SPA-C steel to maintain structural integrity under mechanical load while resisting atmospheric corrosion.
We specialize in supplying atmospheric corrosion resistant steels, including SPA-C, SPA-H, 09CuPCrNi-A, 05CuPCrNi, B480GNQR, Q355GNHD, and Q355NHD.
With over 20 years of export experience, we can provide SPA-C steel plates at competitive prices and in various specifications to suit your project needs.
What is SPA-C corten weathering steel plate equivalent grades
The equivalent grades of SPA-C corten weathering steel plate include HW350, SPA-H JIS G3125, ASTM A242 (COR-TEN A), ASTM A588 (COR-TEN B), S355J2WP+N, S355J2W+N, S355JOWP, S355JOW, S355J2W, 1.8946, 1.8965, SAILCOR IRSM41-97.
What is SPA-C weathering steel?
SPA-C is a type of atmospheric corrosion-resistant steel (Corten steel) designed for long-term outdoor exposure. It forms a stable, protective rust layer that prevents further corrosion, reducing maintenance needs.
What are the main applications of SPA-C steel?
SPA-C is commonly used for architectural facades, outdoor sculptures, bridges, retaining walls, garden landscapes, and industrial equipment where durability and aesthetics are important.
Can SPA-C steel be welded or processed?
Yes. SPA-C can be cut, welded, bent, and formed using standard steel processing methods. Preheating may be recommended for thick plates to avoid welding cracks.
Where can I buy SPA-C steel?
SPA-C steel is available from specialized steel suppliers and distributors. GNEE offers a wide range of SPA-C products in various sizes and forms.
