SS2205 is a duplex steel with a microstructure,when heat treated properly,od nearly equare proportions of austenite and ferrite.This microsturcture ensures that SS2205 is much more resistant to stress corrosion cracking than SS304 and SS316L.The higher chromium,molybdenum and nitrogen contens give SS2205 significantly improved pitting and crevice-corrosion resistance in the presence of chlorides.SS2205 also has better general corrosion resistance than SS316L in most environment.In addition,SS2205 has a 0.2% Proof Stress of about double that of conventional austenitic stainless steels.
2205/S31803 Duplex Stainless Steel
SS2205 has a ductile-to-brittle transition temperature of about -50℃.The stainless steel grade can also become embrittled when exposed to temperature between 300℃ and 550℃，550℃ to 1000℃ and chi phase formation.So application temperatures are generally limited from -50℃ to 300℃.
2507/S32750 Stainless Steel
Duplex 2507 (UNS S32750) is a super duplex stainless steel with 25% chromium, 4% molybdenum, and 7% nickel designed for demanding applications which require exceptional strength and corrosion resistance, such as chemical process, petrochemical, and seawater equipment. The steel has excellent resistance to chloride stress corrosion cracking, high thermal conductivity, and a low coefficient of thermal expansion. The high chromium, molybdenum, and nickel levels provide excellent resistance to pitting, crevice, and general corrosion.
S32202/1.4062 Duplex Stainless Steel
UNS S32202 duplex stainless steel is today widely used for various applications in the pulp & paper and water industries. The following is the specification of UNS S32202 duplex stainless steel we offer.
S32202 duplex stainless steel features: UNS S32202 material has high mechanical strength, good weldability, good corrosion resistance, high resistance to stress corrosion cracking, good machinability and low thermal expansion.