N4460UF (F52)
The mechanical strength and corrosion resistance of the Duplex (austenitic-ferritic) stainless steel is higher than that of austenitic steels. It is mainly used in the pulp and paper industries.
N4462 (DUPLEX 4462 / F51 + F60 / UNS S31803 + UNS S32205)
The mechanical strength and corrosion resistance of the Duplex (austenitic-ferritic) stainless steel is higher than that of austenitic steels and N4462MOD. Duplex steel is used mainly in petrochemical industries. It satisfies a minimum PREN value of 35 and complies with NORSOK M650 and M630 MDS D57 for gauges up to 152.40 mm.
N4462MOD (DUPLEX 4462 / F51 / UNS S31803)
The mechanical strength and corrosion resistance of the Duplex (austenitic-ferritic) stainless steel is higher than that of austenitic steels. Duplex steel is used mainly in petrochemical industries. It satisfies a minimum PREN value of 33.
N4501 (SUPERDUPLEX 4501 / F55 / UNS S32760)
The mechanical strength, corrosion resistance and low temperature toughness of the Superduplex stainless steel (PREN >= 40) is higher than that of ordinary duplex stainless steels. It features high resistance to pitting corrosion and chloride-rich environments. It is used mainly in offshore oil and gas extraction rigs, such as in pumps, valves, flanges and pipes. It complies with NORSOK M650 and M630 MDS D57 for gauges up to 254.00 mm.
N4507 (SUPERDUPLEX 4507 / F61 / UNS S32550)
Superduplex stainless steel (PREN >= 40) featuring mechanical strength, corrosion resistance and toughness. It features high resistance to pitting corrosion and chloride-rich environments. Used similarly and in slightly less severe applications as the N4501. It complies with NORSOK M650 and M630 MDS D57 for gauges up to 182.00 mm.
VDF53 (SUPERDUPLEX 4410 / F53 / UNS S32750)
Superduplex stainless steel (PREN >= 40) featuring mechanical strength, corrosion resistance and toughness. It features high resistance to pitting corrosion and chloride-rich environments. Used in the chemical and petrochemical industry and in offshore oil and gas rigs.
