Category: Hardness - (page 2)
Mechanical & Physical Properties
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The BS EN 10088-2 is the material standard for stainless steel sheet, plate and strip for general purposes. The current edition was published in October 2014. Mechanical properties are specified, including proof and tensile strength, elongation, impact strength and hardness. Only tensile and hardness properties are tabulated in this article for the martensitic grades. LAST UPDATED 25th NOVEMBER 2014.
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Hardness testing methods, including Brinell, Vickers and Rockwell are outlined. The hardness scales, including HB, HV, HRB and HRC are shown for each method and a comparison table of hardness values between these scales presented.
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Mechanical properties of stainless steels to BS EN 10217-7 for welded stainless steel tubes for pressure purposes.
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The NACE MR0175 standard for sulfide, (sulphide) stress corrosion cracking resistant metallic materials for oilfield equipment is now also available as an ISO standard 15156. This article summarises the requirements for all types of stainless steel austenitic , ferritic, duplex, martensitic and precipitation hardening stainless steels which are covered by the standard. Mill softened material will normally be found to comply with the requirements.
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Guidance on methods for sorting stainless steels from low alloy and carbon steels is shown. These include physical, (colour, density, magnetic), and mechanical, (hardness), properties and chemical tests, (copper sulphate, copper chloride, nitric acid and sulphur tests). A suggested approach to a step-by-step procedure for differentiating stainless steels from carbon steels is tabulated. These methods have not been verified by the BSSA, who take no responsibility for their accuracy of the conclusions reached on steel types.
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Summary of links to websites for download of stainless steel grade datasheets
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