A182 F53 2507 special flange Super Duplex SAF 2507 flanges
The flanges could also be manufactured as screwed, threaded or forged types. The forged flanges are made from a single piece of raw material. These are also called the cast flanges.
ASTM A182 F53 equates to UNS S32750. With an increased chromium content compared with F51 it offers improved pitting corrosion resistance. Super Duplex UNS S32750 /F53 Flanges are made from a super duplex stainless steel grade that has 24% chromium, 3% molybdenum, 6% nickel and carbon, manganese, silicon, sulfur, phosphorus, nitrogen and iron in the composition. Super Duplex valves and their use. With a 25% Cromium component, super duplex valves are designed to withstand seawater corrosion and other intergranular corrosion and pitting.