Category: Fire Resistance
Environment, Health & Safety
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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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Stainless steels do not have an intrinsic ‘fire rating’. Tests to assess fire resistance are performed on specific fabrications under precise conditions to BS476 parts 20, 21 (load-bearing elements) and 22 (non-load-bearing elements). Fire tests results on some specific products demonstrate the good fire resisting properties of stainless steels in building and ship bulkhead applications. (186)
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Stainless steels cannot be regarded as ‘spark free’ where there could be a risk of gas ignition by frictional contact. Although the corrosion resistance of stainless steels is better then plain carbon (mild steel), their frictional sparking characteristics and their explosive gas ignition risk is no better. This based on work done by the Health and Safety Laboratory of the Health and Safety Executive at Buxton, UK, in 1995.
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