BS ISO 3506-6:2020 pdf free.Fasteners一M lechanical properties of corrosion-resistant stain less steel fasteners.General rules for the selection of stainless steels and nickel alloys for fasteners.
BS ISO 3506-6 This document specifies general rules and provides technical information on stainless steels and their properties, which are relevant when using other parts of the ISO 3506 series. It includes specifications  for corrosion-resistant stainless steels and nickel alloys, which are suitable for the manufacture of fasteners. It applies to austenitic, martensitic, ferritic and duplex (austenitic-ferritic) stainless steel grades and nickel alloys for fasteners, and is intended to be used together with the relevant parts of the ISO 3506 series. Common designations of stainless steels and nickel alloys used for fasteners are given in Annex A. The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 3506-1, Fasteners一Mechanical properties of corrosion-resistant stainless steel fasteners- Part 1: Bolts, screws and studs with specified grades and property classes ISO 3506-2, Fasteners一Mechanical properties of corrosion-resistant stainless steel fasteners一Part 2: Nuts with specified grades and property classes ISO 3506-53), Fasteners一Mechanical properties of corrosion-resistant stainless steel fasteners一Part 5: Special fasteners (also including fasteners from nickel alloys) for high temperature applications.The condition of the surface of the fasteners (passivated, surface roughness, etc.) can influence the capacity of the fastener to resist corrosion.  In special cases, it is advised to consult an experienced fastener manufacturer and/or stainless steel metallurgist in order to make the appropriate choice for a given application. Corrosion depends on several factors related to the fasteners themselves, the design of the bolted joint, service environment, surface and material conditions, mechanical stresses, temperature and corrosion caused by contact between dissimilar metals (known as galvanic corrosion or contact corrosion), etc. BS ISO 3506-6 pdf download.