Or simply go through the following pages with links to the relevant articles
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Young’s modulus and thermal expansion data is tabulated for a range of commonly used grades shown in BS EN 10088-1. More detailed ‘typical’ data follows for austenitic steel types only from the INCO publication, ‘Austenitic chromium-nickel stainless steels-engineering properties at elevated temperatures’, including tensile and shear modulus data, Poisson’s ratio, density, thermal expansion, conductivity, specific heat and electrical resistivity.
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A guide to EN 1090 for stainless steel related issues
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Galling, sometimes known as cold welding, is a form of severe adhesive wear which can occur when two metals are in relative motion and under sufficient load to permit the transfer of material. Severe galling can result in seizure of metal components. The key factors affecting the tendency for galling are design tolerances and the surface finish, hardness and microstructure of the metals in contact.
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Galling, sometimes known as cold welding, is a form of severe adhesive wear which can occur when two metals are in relative motion and under sufficient load to permit the transfer of material. Austenitic and precipitation hardening stainless steels have poor resistance to galling. Hardenable martensitic stainless steels have better galling resistance. The galling characteristics of duplex stainless steels is thought to be similar to that of austenitic stainless steels.
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The main factor in the selection process for stainless steels is corrosion resistance. Careful consideration of the application should be done to enable a choice of grade with suitable corrosion resistance whilst keeping costs to an economic minimum. Other considerations such as mechanical properties, (strength and toughness), physical properties, (magnetic permeability), and forming, fabrication and joining methods available should be secondary. (91)
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Appropriate grade selection is a balance between attaining adequate corrosion resistance, whilst minimising cost. Useful aids to material selection include the Outokumpu Stainless Corrosion Handbook and the Nickel Institute’s Crevice Corrosion Engineering Guide.
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Galling, sometimes known as cold welding, is a form of severe adhesive wear which can occur when two metals are in relative motion and under sufficient load to permit the transfer of material. Lubrication in improves galling resistance. A solid lubrication system such as a PTFE coating gives better galling resistance than greases. Altering the surface characteristics by nitriding or chromium plating also improves wear and galling resistance.
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The Online Stainless Steel in Construction Information Centre www.stainlessconstruction.com has become available.
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Paper delivered by Roger Sale at BSSA Conference 2000
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This publication has been prepared by the BSSA for the RIBA CPD Providers Network. It lists sources of information from the BSSA website, (articles and publications), the Nickel Institute, Steel Construction Institute, Euro Inox, Outokumpu, and the Australian and South African Stainless Steel Development Associations. These are grouped in topics that include Designing for Durability, Surface Finishes, Fabrication, Environmental Issues, Source of Supply, Architectural and Structural Applications.
