DIN-17200-steel

UDC669.14.018.298.3:620.1DEUTSCHE NORMMarch 1987Steels for quenching and tempering本Technical delivery conditions17200Vergutungsstahle:technische LieferbedingungenSupersedes November 1984 edition.In keeping with current practice in standards published by the International Organization for Standardization (ISO),a commahas been used throughout as the decimal marker.See Explanatory notes for connection with International Standard ISO 683 Part 1 published by the International Orgarza-tion for Standardization (ISO)and with EURONORM 83-70 published by the European Coal and Steel Community.The clauses and subclauses marked with a single dot give specifications which are to be agreed upon at the time ofordering.The subclauses marked with two dots give specifications which are optional and may be agreed upon at thetime of ordering.1 Field of application2.3 Types of heat treatment1.1 This standard applies toThe terminology used in DIN 17 014 Part 1 shall apply for thesemi-finished products,e.g.blooms,slabs,billets,types of heat treatment referred to in this standard.hot rolled wire,hot rolled or forged steel bars (round,square,hexagonal,2.4 Equivalent diameteroctagonal and flat steel bars),The information given in Appendix A shall apply with regardhot rolled wide flats.to the equivalent diameter.hot or cold rolled plate.sheet and strip.3●hammer forgings and drop forgings.Dimensions,permissible dimensionalmade from the steels listed in table 2.deviations and deviations of formTne treatment conditions in which the various productThe nominal sizes,the permissible dimensional deviationsforms concerned can be supplied are shown in table 1.andand deviations of form for the products shall be agreed atthe possible surface finishes are given in subclause 7.2.2.the time of ordering.reference being made,if possible,toNote 1.DIN Standards covering steels which are to meetthe appropriate dimensional standards (see Appendix B).the same requirements regarding chemical compo-sition as given in table 2.but are supplied in other4Massesproduct forms or other treatment conditions or areThe masses of the steels covered by this standard haveintended for particular applications.and also DINbeen calculated taking the density as 7,85 kg/dm3.Standards covering similar steels are listed in the"Other relevant standards and documents"clause.Note 2.Hammer forged semi-finished products,for5 Designation and orderingexample blooms,slabs,billets and hammer forged5.1 The standard designation for steel complying withsteel bars are referred to in this standard as"semi-this standard,shall give in the following order:finished products"and "steel bars".and not asthe name of product(steel):"hammer forgings and drop forgings".the number of this standard;1.2 In addition to the requirements specified in thisthe symbol or material number identifying the steelgrade(see table 2));standard,the general technical delivery conditions for steel当and steel products given in DIN 17 010 shall apply unlesswhere a