Rod alloy steel Ferralium® 255 – FG46

for the plastics industrycorrosion resistanthigh-strength

Ferralium® 255 – FG46 is a super duplex stainless steel which is supplied in the strain hardened condition (Condition S). It is optimised for fastener applications, matching the mechanical properties of the B7 grade alloy carbon steel which is most commonly used for high-pressure bolting applications. As a variant of our unique Ferralium® 255 – SD50 product, it is a 25% Cr alloy with significant additions of Cu, delivering excellent corrosion resistance in a variety of corrosive chemicals including sulphuric, nitric and phosphoric acid. In seawater and other chloride containing environments it also provides outstanding long term resistance to pitting and crevice corrosion, with a critical pitting temperature exceeding 50°C. The product retains its excellent ductility and impact strength at both ambient and sub-zero temperatures, despite the elevated strength levels. These are combined with a high resistance to abrasion, erosion and cavitation erosion. Ferralium® 255-FG46 is tested to the highest degree using tests designed to guarantee that the trade-marked product possesses high integrity, a correct phase balance and the absence of sigma and other deleterious phases. Key Features: Ferralium® was originally developed in 1960’s, pioneering the addition of nitrogen, to create the first super duplex stainless steel Throughout the 1990’s, further developments were completed to extend PREN > 40, and more recently to increase its mechanical properties Excellent resistance to stress corrosion cracking in chloride containing environments High structural integrity, optimised phase balance and the absence of sigma and other deleterious phases