Difference Between Corten A and Corten B:
Chemical Composition:
Corten A:
Contains higher levels of phosphorus and is designed to oxidize in a relatively low sulfur environment.
Corten B:
Has a lower level of phosphorus compared to Corten A, making it suitable for applications requiring enhanced resistance to atmospheric corrosion.
Tensile Strength:
Corten A:
Generally has higher tensile strength than Corten B.
Corten B:
Slightly lower tensile strength compared to Corten A.
Weldability:
Corten A:
Requires pre-heating before welding to prevent cracking due to its higher phosphorus content.
Corten B:
Generally better weldability and can be welded without pre-heating under most conditions.
Applications:
Corten A:
Commonly used in architectural structures, bridges, facades, and outdoor sculptures where a weathered, rusty look is desired.
Corten B:
Often chosen for structural applications that require higher strength and enhanced resistance to atmospheric corrosion.
Weathering Characteristics:
Corten A:
Develops a stable rust-like appearance over time, which acts as a protective barrier against further corrosion.
Corten B:
Exhibits similar weathering characteristics to Corten A but may require slightly longer exposure to elements to achieve the desired patina.
Corrosion Resistance:
Corten A:
Offers good resistance to atmospheric corrosion.
Corten B:
Provides improved resistance to atmospheric corrosion compared to standard carbon steel.
Availability:
Both Corten A and Corten B are readily available in various forms such as sheets, plates, coils, and structural sections.
In summary, while Corten A and Corten B are both weathering steel grades designed to develop a protective rust-like patina, they differ in terms of chemical composition, tensile strength, weldability, and specific applications. Corten A is favored for its rust aesthetic and architectural applications, while Corten B is chosen for its enhanced strength and corrosion resistance in structural designs.
Just like you, 70% customers choose long-term cooperation with BBN steel not only for our good product and service quality, good reputation in the international market, but also for our experienced one-stop raw material supply and further steel processing!
