Super stainless steel F44

Domestic and foreign approximate grades

• UNS S31254(USA):F44 has similar international standard grades, composition and performance, and is widely used in fields with high corrosion resistance requirements.
• 1.4547(Europe/Germany): Super duplex stainless steel in EN standard, similar to F44 in chemical composition and mechanical properties.
• 254SMO(Sweden):Avesta's super duplex stainless steel with similar corrosion resistance and high temperature resistance.
• 6Mo(generic name): refers to 6% molybdenum containing super duplex stainless steel, including F44 and 254SMO and other grades.

chemical composition
F44 is as follows:
-Nickel (Ni):17.5-18.5%
-Chromium (Cr):19.5-20.5%
-Molybdenum (Mo):6-6.5%
-Nitrogen (N):0.18-0.22%
-Copper (Cu):0.5-1%
-Iron (Fe): balance

physical properties
-Density: 8.0 g/cm & sup3;
-Melting point: 1350°C
-Corrosion resistance: suitable for high chloride environment, with excellent pitting and crevice corrosion resistance

mechanical properties
-Tensile strength: ≥ 650 MPa
-Yield strength: ≥ 300 MPa
-Ductility: Good, suitable for cold working and welding
-Hardness: HV 180 - 220

Application areas
-seawater treatment: used in desalination equipment, heat exchangers, pipelines and other marine equipment.
-chemical equipment: suitable for reactors, vessels and pipelines in acidic and corrosive environments.
-Pharmaceutical equipment: equipment suitable for high purity and high corrosion resistance requirements.
-Oil and Gas: Used in chloride-and sulfide-containing environments, such as offshore platforms and refineries.

Supply Specifications
-shape: plate, pipe, bar, flange, etc.
-size: customized according to customer needs