Listing ID #1523045
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Contact SupplierOur company is ranked among well-known Manufacturers, Exporters and Suppliers of a wide range of 32750 Duplex Steel Products. Available in varied specifications, our 32750 Duplex Steel Products are reliable and durable. They are capable of retaining their physical properties even under extreme conditions. Interested buyers can get 32750 Duplex Steel Products from us in bulk at market leading prices. We guarantee 32750 Duplex Steel Products are made of 100 % pure mild steel. Thus, they are light in weight, robust and excellently finished.
General Properties : 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 nitrogen levels provide excellent resistance to pitting, crevice, and general corrosion.
Applications :
General Corrosion :
Intergranural Corrosion :
Stress Corrosion Cracking :
Pitting Corrosion : Different testing methods can be used to establish the pitting resistance of steels in chloride-containing solutions.
Crevice Corrosion : Highly resistant to crevice corrosion.
Hot forming : 2507 should be hot worked between 1875oF and 2250oF. This should be followed by a solution anneal at 1925°F minimum and a rapid air or water quench.
Cold Forming : Most of the common stainless steel forming methods can be used for cold working 2507. The alloy has a higher yield strength and lower ductility than the austenitic steels so fabricators may find that higher forming forces, increased radius of bending, and increased allowance for springback are necessary. Deep drawing, stretch forming, and similar processes are more difficult to perform on 2507 than on an austenitic stainless steel. When forming requires more than 10% cold deformation, a solution anneal and quench are recommended.
Heat Treatment : 2507 should be solution annealed and quenched after either hot or cold forming. Solution annealing should be done at a minimum of 1925°F. Annealing should be followed immediately by a rapid air or water quench. To obtain maximum corrosion resistance, heat treated products should be pickled and rinsed.
Welding :
2507 possesses good weldability and can be joined to itself or other materials by shielded metal arc welding (SMAW), gas tungsten arc welding (GTAW), plasma arc welding (PAW), flux cored wire (FCW), or submerged arc welding (SAW). 2507/P100 filler metal is suggested when welding 2507 because it will produce the appropriate duplex weld structure.
Preheating of 2507 is not necessary except to prevent condensation on cold metal. The interpass weld temperature should not exceed 300oF or the weld integrity can be adversely affected. The root should be shielded with argon or 90% N2/10% H2 purging gas for maximum corrosion resistance. The latter provides better corrosion resistance.