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Selection and application of duplex stainless steels
The author (Masaharu Doi, from Kuze Bellows Kogyoschoco, Ltd, Japan) reviews super duplex stainless steel as well as high performance duplex stainless steel from the perspective of selection and application....
A fascinating construction project with LDX 2101 duplex in the historical city of Tampere, Finland
When reconstructing a dam’s flood gates in a historical setting and building a pedestrian bridge in heritage surroundings, a lot more factors may have to be paid attention to than you would initially expect, particularly when the legislation of government bodies have to be taken into account. Here, the story of such a project involving Stalatube in the old city of Tampere in Finland....
Centrifugally cast duplex stainless steels
From Spuncast, Inc, USA, Messrs Martin, Mooren and Holz reveal the benefits of casting as a metal forming technique for duplex. The ability to produce near-net shapes can be very cost-effective....
Duplex welding: best practices
Staff at Fluor Canada indicate how fabricators can best achieve an appropriate phase balance in weldments....
Efficient trailers from LDX 2101
In Queensland, Australia, Noosa Cat have used lean duplex as a cost effective alternative to galvanized steel for trailer production....
Electron beam welding of superduplex stainless steel
Mr Chavdarov (Technical University of Sofia, Bulgaria) discusses the influence of welding parameters upon the shape of the weld, the microstructure and respectively the precipitation of second phases in 10mm thick superduplex stainless steel plates....
General guidelines: practical aspects for production welding, a fabricator's view
This paper by Ralph Davison (Technical Marketing Resources, USA) gives guidelines for welding duplexes, such as materials selection, cleaning, joint design, preheating, heat input, postweld treatment, welding methods, etc....
High strength duplexes for wire applications
Discussions of recent wire developments in high strength SAF 2205 and super high strength SAF 2205SH. ...
Investigating key properties of large thickness DSS forgings
With demand for heavy parts with large wall thicknesses increasing in the offshore industry, Bruck Forgings has looked at optimisation of forging and heat treatment processes to ensure parts of high quality. Author Dominich Bruch, Bruck Forgings, Germany...
Joining duplex stainless steel
Hector Leppky argues that people with little or no experience would do well to follow a rigid set of guidelines when joining duplex stainless steels....
Stainless Steel World recently had the pleasure of meeting Mr Eric ten Feld, Sales Manager for Sulzer Turbo Services Rotterdam B.V.. We quizzed him about his business, the types of materials involved and of course what trends he is seeing....
Practical aspects for production welding of duplex
The authors, C. Baxter and M. Young, present good welding practices for duplex and super duplex. Isues such as welding procedure design, heat input and interpass temperature are discussed....
Preparing metal tubes for orbital welding
Nadia Reicher Fournel looks at how equipment selection can bring benefits to productivity and quality when orbital welding duplex tubes. An example is given using Statoil's Snohvit project....
Some pitfalls in welding duplex stainless steels
In this technical paper, Damian Kotecki looks at regularly occuring pitfalls in welding duplex stainless steels from the standpoint of metallurgical experience. Examples cited at inappropriate base metal specifications......
The evolution of duplex fabrication: a fabricator's view
(Archive article) During the Duplex America 2000 Conference, Barry Heuer (Nooter Fabricators) discussed the demand for duplex from the US perspective....
Welding consumables for lean duplex stainless steels
To fully exploit lean duplex stainless steels it is important to be able to join them. This paper, written by experts at Metrode Products, compares possible arc welding consumables. Recommendations are also given for a composition for newly developed consumables....
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