ASTM A182 Duplex Stainless Steel Flanges designated by classes 150Lbs through 2500LBs
The duplex structure results in improved stress-corrosion cracking resistance, compared with the austenitic stainless steels, and improved toughness and ductility, compared with the ferritic stainless steels.
They are available in a different size that is half to 24, NB to 24. The standards of the flanges are ASME, ANSI BI6.9, and ASME. The F51 duplex flanges without hub shall be manufactured from plate in according to ASTM A240. After hot forging, the duplex F51 flanges shall be cooled to a temperature below 1000¡ãF [538¡ãC] prior to heat treatment. F53 is a high alloy duplex stainless steel. The product is highly durable. ASTM A182 UNS S31803 Duplex Flanges are very durable and fit any dimension due to the availability of different shapes and size.