SPA-C weathering steel plate is alloyed with 2–8% molybdenum, making it comparable to chromium-nickel alloy weathering steel, while offering even better overall performance.
In many applications, SPA-C is considered an upgraded alternative to traditional Cr-Ni weathering plates, particularly in non-oxidizing acids and high-temperature organic acid environments.
Its corrosion resistance in chloride-rich conditions is far superior to that of conventional chromium-nickel alloy weathering steel, and it also provides excellent protection against pitting corrosion.
SPA-C weathering steel plate delivers a balanced combination of corrosion resistance, heat resistance, low-temperature strength, and mechanical stability.
It is suitable for a wide range of uses, from household equipment to heavy-duty industrial applications. In atmospheric exposure and chemically aggressive environments, SPA-C steel maintains strong corrosion resistance and benefits from outstanding work-hardening properties.
It is widely used in chemical equipment, marine facilities, and seawater-related applications.
Due to its excellent performance and durability, SPA-C weathering steel plate has become increasingly popular in the global market. For more details or quotations, please contact us directly.
What is 09CrCuSb steel?
09CrCuSb, also known as ND steel, is a low-alloy corrosion-resistant steel specially designed for use in acidic dew point corrosion environments. It contains alloying elements such as chromium (Cr), copper (Cu), and antimony (Sb), which significantly enhance its resistance to sulfuric acid and flue gas corrosion.
Why is 09CrCuSb called ND steel?
"ND" stands for Nitric acid and Dew-point corrosion resistance. The steel was developed to withstand low-temperature acid condensation corrosion commonly found in boilers, heat exchangers, and flue gas systems.
Does 09CrCuSb steel have good weldability?
Yes. 09CrCuSb steel has good weldability. Standard welding methods such as SMAW, SAW, and TIG can be used, but low-hydrogen electrodes and proper preheating may be recommended for thicker sections.
Is 09CrCuSb suitable for high-temperature service?
09CrCuSb is mainly designed for medium-temperature environments where acid dew point corrosion occurs. It is not intended for extremely high-temperature pressure vessel applications without proper evaluation.
