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UNS S31254 - EN 1.4547

UNS S31254 - EN 1.4547

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.

Equivalent grades

• UNS S31254
• DIN 1.4547
• X1CrNiMoCuN20-18-7

Chemical Composition Reference


Physical Property Reference

• 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

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UNS S31254 - EN 1.4547

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

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