Special Alloy Valve
Designation Material Characteristics Typical Applications
Austentic Stainless Steel
Highly corrosion resistance to nitric acid and organic acid at ambient temperature. Pulp and paper mills, chemical processes and seawater services.
Corrosion resistance to pitting and crevice corrosion, highly resistant to medium concentration of boiling acetic acid and dilute hydrochloric acid. Equipment for processing organic acid, oil pipeline and seawater services.
(Alloy 20)
Superior resistance to stress crack corrosion in 20%~40% sulfuric acid and corrosion resistance to phosphoric acid of any concentration, even in boiling condition. Process equipment handling sulfuric acid and phosphoric acid.
Duplex Stainless Steel
(CD3MN · S31803)
Outstanding corrosion resistance, combining beneficial properties of austenitic and ferritics stainless steel; high ductility, greater toughness, high strength, good resistance to intercrystalline corrosion & chloride stress corrosion, good weldability and high thermal conductivity. S32760 has high content of Cr, Mo and N than S31803 , PREN value is 40. Process equipment in seawater system, salt manufacturing processes, urea production, and other high corrosion environment.
(CD3MWCuN · S32760)
Ni-Cu Alloy
Corrosion resistance, especially to de-aerated hydrochloric and hydrofluoric acid, high temperatured seawater and steam. Age-hardening M-25S has excellent galling property due to its high silicon content. Marine fixtures and other chemical equipments under hydrofluoric acid, seawater and alkaline solution.
(S Monel®)
Ni-Cr-Mo Alloy
(Hastelloy® C)
Corrosion resistance to oxidizing acid such as wet chlorine gas and chlorine dioxide , acetic acid, seawater and brine solution; exceptional resistance to oxidizing atmospheres up to 1040 deg. C Pulp and paper, food process equipment, seawater services and chemical equipment handling oxidizing acid.