duplex steels

Duplex Steels

Duplex Steels

Composition

20-30% Chromium, 5-8% Nickel, <0.03% Carbon, traces of Nitrogen, Molybdenum, Copper, Silicon and Tungsten.

Common Shapes

Duplex Steels are commonly available in

  • Sheets and Plates

  • Welded & Seamless Tubes and Pipes 

  • Rods

  • Bars

(Not all alloys or tempers available in all shapes)

Characteristics

  • Twice as strong as Austenitic Steels

  • Enhanced toughness

  • Increased ductility

  • Superior Chloride SCC resistance

  • Tensile yield strength of 550-690 Mpa

  • Upper service limit of 300°C

Uses

  • Pipes for the chemical industry

  • Pipes and machinery used in the Oil and Gas industries

  • Machinery and conduit pipes in paper mills

  • Environments where resistance to corrosive media such as aqueous solutions and chlorides.

Weldability

Duplex Steels are generally weldable and should be treated in much the same way as Austenitic Stainless Steels.

Machinability

Machining of Duplex Steels is not generally recommended due to their strength in the annealled condition.

Commonly Used Alloys (UNS)

S31200 | S31260 | S31500 | S31803 | S32304 S32550 | S32750 | S32760 | S32900

まだ記事はありません。近日公開予定ですので、今しばらくお待ちください

Please reload

Integ Metals // Materials // Steel // Duplex Steel
Quick Quote Request

An Introduction

Duplex Steels are recognised for their unique microstructure: consisting of equal Ferrite and Austenitic phases and typically low Carbon content. They are the newest forms of Stainless Steel, used in roles where strength, high corrosion resistance and toughness, whilst still retaining formability, is required. Its properties and comparitive low mass, along with relative inexpense make it a useable alternative to Nickel.

 
  • Black LinkedIn Icon
  • Black Facebook Icon
  • Black Twitter Icon
  • Black YouTube Icon
  • Black Pinterest Icon
  • Black Instagram Icon

Legal

 

Terms & Conditions

Data Disclaimer

Privacy Policy

Use of Cookies

Copyright © 2020 Integ Metals Ltd.