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Category: Forming, Machining & Heat Treatment

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  1. Stainless Steel as a Lightweight Automotive Material

    Paper originally delivered at the BSSA Conference 'Stainless Solutions for a Sustainable Future' held in Rotherham on 3rd April 2003. This paper describes a study where 2 high strength austenitic stainless steels and 3 carbon steels used at Volvo Cars Body Components, were compared. The differences in formability and crash absorbing capability of specific components made from these steels, during plastic deformation, are shown. Tensile (stress-strain curves) and forming limit curves are compared. Forming limit dome tests are better for assessing steels subject to microstructural changes during deformation. Component stamping trials are described and analysed.

  2. Stress relieving heat treatments for austenitic stainless steels

    Austenitic stainless steels are not hardenable by heat treatment as no phase changes occur on heating or cooling. Softening is done by heating in the 1050 / 1120C range, ideally followed by rapid cooling. For many applications, final stress relieving austenitic stainless steel products is not normally needed. Stress relieving removes residual tensile stresses and so improves the SCC resistance. The risk of distortion can be reduced during forming or machining operations by stress relieving.

  3. Surface hardening of Austenitic Stainless Steels with Nitrogen

    This article summarises the proprietary surface hardening processes Stainihard and Stainitec

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Office and Postal Address: BSSA, Regus, Blades Enterprise Centre, John Street, Sheffield S2 4SW

Registered Office: Pegasus House, 463A Glossop Road, Sheffield S10 2QD

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