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Post Date : 17-10-2022
Expiry Date : 10-06-2025

The Microstructure Of Duplex Seamless Pipe Is Approximately 50% Ferrite (body-centered Cubic Structure) And 50% Austenite (face-centered Cubic Structure) Crystal Structure. The Two Phases Coexist As A Stable Mixture, But This Is Different From Two-phase Alloys, Where One Of The Two Phases Appears As A Precipitate. The Alloying Elements In Duplex Stainless Steel Tubes Are Ferritic (eg Chromium, Silicon, Molybdenum) Or Austenitic (eg Carbon, Nickel, Nitrogen), Which Means That They Favor The Formation Of The Ferritic And Austenitic Phases, Respectively. As A Professional Duplex Stainless Steel Pipe Manufacturer In China, Yuhong Group Provides Quality Super Duplex Tubing Solutions.

DIFFERENT TYPES OF DUPLEX STEEL PIPE
Duplex Stainless Pipe Are Part Of The Stainless Steel Family. Duplex( Austenitic-ferritic) Means Their Metallurgical Structure Consists Of Two Phases. Compare With The Normal 304 316 Stainless Steel, They Can Provide Better Corrosion Resistance, Particularly Chloride Stress Corrosion And Chloride Pitting Corrosion, And Higher Strength. And It Has Higher Chromium 20%-28%, And Lower Nickel, Up To 9% And 0.05-0.50% Than Austenitic Stainless Steel, Which Gives Good Cost Benefits.
Typical Duplex Pipe Material Has Higher Yield Strengths Than Typical Martensitic, Austenitic, And Ferritic Stainless Steels. However, Since Intermetallics Begin To Precipitate Above 300 °C And Become Brittle Near Cryogenic Temperatures, Their Operating Temperature Range Is Narrow.

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