UNS S31254 - EN 1.4547 - Super Austenitic Stainless Steel - Stainless steel

UNS S31254 - EN 1.4547 is a stainless steel grade that provides excellent corrosion resistance and high strength. It is composed of 19.5-20.5% Cr, 17.0-19.0% Ni, 6.0-7.0% Mo, and traces of other elements for improved properties. Its excellent resistance to chloride pitting and crevice corrosion make it a great choice for components that must withstand high levels of chloride exposure.

Chemical Composition	0.01C-0.2N-20Cr-18Ni-6.1Mo-Cu
Physical Property	• Density: 8.00 g/cc • Hardness: >= 210 • Tensile Strength: 680 MPa • Yield Strength: 300 MPa • Modulus of Elasticity: 195 GPa • Thermal Conductivity: 14.0 W/m-K
Stock & Dimensions	Our warehouse has a large number of stock to provide you with a variety of products in different sizes, and can also customize the size according to your needs. • Bar: 0.5~600mm Diameter • Coil: 0.5~150mm Thick • Plate: 0.5~200mm Thick • Pipe: 6~630mm External Diameter; 0.5~40mm Wall Tick • Available in specific sizes
Product Forms	We provide you with a variety of product forms, including but not limited to: • Bar/Rod • Pipe/Tube • Coil/Strip • Plate/Sheet/Circle • Wire • Fitting (Flange, Elbow, Tee...) • Customize

Essential details

EN 1.4547 is described as a 6% Mo super austenitic stainless steel. The steel combines moderate mechanical strength (typically over 300 MPa yield strength) and high ductility with excellent corrosion resistance in seawater and a variety of industrial environments.

Typically the alloy has a PREn(Pitting Resistance Equivalent) of 42-44 which ensures that the resistance to pitting corrosion is high. In addition, the steel provides good resistance to crevice corrosion.

Typical Applications:

- Process equipment in chemical industry

- Bleaching equipment in the pulp and paper industry

- Flue-gas cleaning

- Desalination

- Seawater handling

- Heat exchangers