Flanges, being integral components of piping systems, are available in various materials to suit different applications and operating conditions. The selection of flange material depends on factors such as fluid or gas being transported, temperature, pressure, and corrosion resistance requirements. Some commonly used materials for flanges include:

• Carbon Steel: Carbon steel flanges, such as ASTM A105/A105N, are widely used for general-purpose applications with moderate temperature and pressure requirements.
• Stainless Steel: Stainless steel flanges, such as ASTM A182 F304, F316, and F316L, offer excellent corrosion resistance and are suitable for applications where hygiene, durability, and resistance to high temperatures or aggressive chemicals are required.
• Alloy Steel: Alloy steel flanges, such as ASTM A182 F5, F9, F11, and F22, are preferred for applications involving high temperatures, pressure, and corrosion resistance. They are commonly used in industries such as oil and gas, petrochemical, and power generation.
• Duplex and Super Duplex Stainless Steel: These materials provide enhanced corrosion resistance and are suitable for demanding applications with exposure to aggressive environments, such as offshore and marine industries.
• Nickel Alloys: Nickel alloy flanges, such as Inconel, Hastelloy, and Monel, offer exceptional resistance to corrosion, high temperatures, and various chemicals. They find applications in industries such as chemical processing, aerospace, and marine.