BS EN 10273 pdf free download

BS EN 10273 pdf free download.Hot rolled wel dable steel bars for pressure purposes with specified elevated temperature properties.
2 Definitions For the purposes of this standard the definitions of standards: – EN 10020 for classification of steels; – EN 10052 for the types of heat treatment; and – EN 10079 for the various product forms. apply. Deviating from (see 3. 1) or aditional to (see 3.2) EN 10052, are the following defined. 2.- Normalizing rolling is a rolling process in which the final deformation process is carried out in a certain temperature range leading to a material condition equivalent to that obtained after normalizing so that the specified values of the mechanical properties are retained even after normalizing. The symbol for this delivery condition is N. 2.1 Additionally to the definitions for quenching and tempering the following should be noted: NOTE: Quenching and tempering (symbol QT) also includes direct hardening plus tempering. 2.2 Purchaser: The person or organization that orders products in accordance with this standard. The purchaser is not necessarily, but may be, a manufacturer of pressure equipment in accordance with the EU Directive listed in Annex ZA. Where a purchaser has responsibilities under this EU Directive, this standard will provide a presumption of conformity with the essential requirements of the Directive so identified in Annex ZA.6 Classification and designation 6.- Classification This European Standard covers the steel grades given in table 1. According to EN 10020 the steels P235GH, P250GH, P265GH, P295GH, P355GH, P275NH and P355NH are non-alloy quality steels. AIlI other steel grades covered by this European Standard are alloy special steels. 6.1 Designation The steel grades specified in this European Standard are designated with steel names and steel numbers in accordance with EN 10027-1 and CR 10260. The corresponding steel numbers have been established in accordance with EN 10027-2.7 Information to be supplied by the purchaser 7.- Mandatory information The complete order of a product as specified in this European Standard shall include the following information: a) the quantity required; b) the shape of bars; c) the tolerances on dimensions, shape and mass (see clause 4); d) the nominal dimensions of the product; e) the number of this European Standard; f) the steel name or number; g) the delivery condition (see 8.2); h) type of inspection document (see 9.2.1).7.1 Options A number of options are specified in this European Standard and these are listed below. If the purchaser does not indicate his wish to implement any of these options the products shall be supplied in accordance with the basic specification (see 7.1). Specification of the steelmaking process (see 8.1). Deviating delivery condition (see 8.2.1 and 8.2.3). Specification of a lower maximum copper content and a maximum tin content (see table 1, footnote 2). 凹 Specification of a higher minimum chromium content (see table 1, footnote 9). Specification of a maximum carbon equivalent value (see 8.3.3 and table 3). 。 Mechanical properties for diameters or thicknesses > 150 mm (see table 4, footnote 2). Special surface condition (see 8.5). ∞ Requirements for and verification of internal soundness (see 8.6). Specific tests for verification of general delivery requirements (see 86 and 911)1 10) Delivery of data on suitable welding conditions (see 8172)1 11) Product analysis (see 9B2, 101 11 and 11)1 12) Verification of 0,2 % proof strength at elevated temperature (see 9B2 and 113)1 13) Special marking requirements (see 122).BS EN 10273 pdf download.