What material should welding flanges be forged from?

Welding flanges are typically forged from steel plate because steel provides the necessary strength and durability required for high-pressure applications in waterworks and other industrial environments. Steel's mechanical properties allow it to withstand significant stress during operation, particularly in systems that are subjected to varying temperatures and pressures.

When using flanges in piping systems, the integrity of the connection is crucial to prevent leaks and ensure reliable operation. Steel’s ability to be welded easily to the pipe material, along with its resistance to corrosion (especially when treated or coated), makes it a standard choice for welding flanges.

While other materials like stainless steel are also used in specific applications due to their corrosion resistance, the fundamental choice for forging flanges is typically steel plate due to its balance of cost, strength, and ease of manufacturing. Aluminum, while lightweight and resistant to corrosion, does not provide the same strength as steel, and plastic lacks the mechanical robustness required for high-pressure systems, making those options less suitable for welding flanges.