Randhir Metal is one of the pioneer manufacturer and supplier of Super Duplex Stainless Steel S32750 / S32760 Fasteners (Bolts / Nuts), which gives better guaranteed corrosion resistance. Super Duplex S32750 Hex Head Bolts is the most widely used duplex (ferritic / austenitic) stainless steel grade. The standard Super Duplex S32760 Hex Head Nuts composition has over the years been refined by us, and the resulting restricted composition range was endorsed. Super Duplex S32750 Square Bolts is not generally suitable for use at temperatures above 300 Degree C as it suffers from precipitation neither of brittle micro constituents, nor below -50 Degree C because of its ductile – to – brittle – transition. Although Super Duplex S32760 Square Nuts has good high temperature oxidation resistance, this grade – like other duplex stainless steels – suffers from embrittlement if held for even short times at temperatures above 300 Degree C. If embrittled, Super Duplex S32750 Eye Bolts can only be rectified by a full solution annealing treatment, which are almost never used above 300 Degree C. Solution treatment (annealing) – heat these Super Duplex S32760 Eye Nuts up to 1020 Degree C – 1100 Degree C and cool rapidly, which further cannot be hardened by thermal treatment, but does work harden. Super Duplex S32750 T-Bolts has higher strength which is around twice that of Type 304 austenitic stainless steel. Super Duplex S32760 T-Nuts finds applications due to both excellent corrosion resistance and high strength.

Randhir Metal is one of the pioneer manufacturer and supplier of Super Duplex Stainless Steel S32750 / S32760 Fasteners (Bolts / Nuts), which gives better guaranteed corrosion resistance. Super Duplex S32750 Hex Head Bolts is the most widely used duplex (ferritic / austenitic) stainless steel grade. The standard Super Duplex S32760 Hex Head Nuts composition has over the years been refined by us, and the resulting restricted composition range was endorsed. Super Duplex S32750 Square Bolts is not generally suitable for use at temperatures above 300 Degree C as it suffers from precipitation neither of brittle micro constituents, nor below -50 Degree C because of its ductile – to – brittle – transition. Although Super Duplex S32760 Square Nuts has good high temperature oxidation resistance, this grade – like other duplex stainless steels – suffers from embrittlement if held for even short times at temperatures above 300 Degree C. If embrittled, Super Duplex S32750 Eye Bolts can only be rectified by a full solution annealing treatment, which are almost never used above 300 Degree C. Solution treatment (annealing) – heat these Super Duplex S32760 Eye Nuts up to 1020 Degree C – 1100 Degree C and cool rapidly, which further cannot be hardened by thermal treatment, but does work harden. Super Duplex S32750 T-Bolts has higher strength which is around twice that of Type 304 austenitic stainless steel. Super Duplex S32760 T-Nuts finds applications due to both excellent corrosion resistance and high strength.