A wide range of materials is available for flanges to meet varying requirements regarding pressure, temperature, medium corrosiveness, and cost. Common materials include carbon steel, stainless steel, cast iron, and plastics (such as PVC and PP). For specialized operating conditions-such as highly corrosive environments-special alloys like Monel, Hastelloy, and Inconel are also used.
WCB (carbon steel), LCB (low-temperature carbon steel), LC3 (3.5% nickel steel), WC5 (1.25% Cr-0.5% Mo steel), WC9 (2.25% Cr), C5 (5% Cr-0.5% Mo), C12 (9% Cr-1% Mo), CA6NM (12% Cr steel), CA15 (12% Cr), CF8M (316 stainless steel), CF8C (347 stainless steel), CF8 (304 stainless steel), CF3 (304L stainless steel), CF3M (316L stainless steel), CN7M (alloy steel), M35-1 (Monel), N7M (Hastelloy B), CW6M (Hastelloy C), CY40 (Inconel), etc.
