Duplex Stainless Steels For Construction

Duplex Stainless Steels For Construction

Duplex Stainless Steels for Construction Product Description Duplex stainless steels are becoming more common. They are being offered by all the major stainless steel mills for a number of reasons: Higher strength leading to weight saving Greater corrosion resistance particularly stress...
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Product Details

Duplex Stainless Steels for Construction

Thickness0-1 mm, 1-2 mm, 2-3 mm, 3-4 mm
Single Piece Length3 meter, 6 meter
Thickness/Diameter0-1 inch, 1-2 inch, 2-3 inch, 3-4 inch, >4 inch
ApplicationConstruction, Manufacturing, School/College Workshop
Minimum Order Quantity100 Kilogram

Product Description

Duplex stainless steels are becoming more common. They are being offered by all the major stainless steel mills for a number of reasons:

  • Higher strength leading to weight saving

  • Greater corrosion resistance particularly stress corrosion cracking

  • Better price stability

  • Lower price

The basic idea of duplex is to produce a chemical composition that leads to an approximately equal mixture of ferrite and austenite. This balance of phases provides the following:

  • Higher strength – The range of 0.2% PS for the current duplex grades is from 400 – 550 MPa. This can lead to reduced section thicknesses and therefore to reduced weight. This advantage is particularly significant for applications such as:
    o Pressure Vessels and Storage Tanks
    o Structural Applications e.g. bridges

  • Good weldability in thick sections – Not as straightforward as austenitics but much better than ferritics.

  • Good toughness – Much better than ferritics particularly at low temperature, typically down to minus 50 deg C, stretching to minus 80 deg C.

  • Resistance to stress corrosion cracking – Standard austenitic steels are particularly prone to this type of corrosion. The kind of applications where this advantage is important include:
    o Hot water tanks
    o Brewing tanks
    o Process plant
    o Swimming pool structures

Duplex Stainless Steels for Construction

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