Rod alloy steel Ferralium® 255 – 3SF

for the plastics industrycorrosion resistanthigh-strength

Ferralium® 255 – 3SF is a super duplex stainless steel supplied as forgings. As a 25% Cr alloy, with significant additions of Cu, it offers excellent corrosion resistance in a variety of corrosive chemicals including, but not limited to, sulphuric, nitric and phosphoric acid. In seawater and other chloride contaminated environments it also provides outstanding resistance to pitting and crevice corrosion, with a critical pitting temperature exceeding 50°C. Key Features: Particularly suitable for larger components as the formation of sigma phase is much less likely than it is for other Super Duplexes Ferralium® was originally developed in 1960’s, pioneering the addition of nitrogen, to create the first super duplex stainless steel Continuously developed through 1990’s to extend PREN > 40, and more recently to increase mechanical properties Pitting Resistance Equivalent (PREN) >40, indicating outstanding resistance to pitting and crevice corrosion Higher copper content provides self-healing effect at sites of pitting to inhibit further growth Available as bars, plate, pipe and fittings with complementary weld wire Listed in NACE MR 0175 for sour service Applications: Oil & Gas industry pumps, valves, wellhead and subsea equipment Pollution control scrubbers, precipitators, fans and pumps Marine propellers, shafts, rudders, seals, pumps, valves Bolts and fasteners Grain and vegetable processing plant, sugar cane centrifuges Pulp and paper digester blow vales, feed valves, washers, black liquor heater tubes, bleaching components Copper smelting fans, tuyere bars, wet scrubbers, leaching area precipitators Water and sewage treatment, desalination, swimming pools