BS 10263-3:2017 pdf download – Steel rod, bars and wire for cold heading and cold extrusion Part 3: Technical delivery conditions for case hardening steels 1 Scope 1.1This part of EN 10263 is applicable to round rod, round bars and wire with a diameter up to andincluding 100 mm, of non-alloy and alloy steel, intended for cold heading and cold extrusion and casehardening. 1.2 EN 10263-1:2017 is indispensable for this part of EN 10263.Normative references The following documents, in whole or in part, are normatively referenced in this document and areindispensable for its application.For dated references,only the edition cited applies. For undatedreferences, the latest edition of the referenced document (including any amendments) applies. EN 10020, Definition and classification of grades of steel EN 10263-1:2017,Steel rod,bars and wire for cold heading and cold extrusion — Part 1: Generaltechnical delivery conditions 3Terms and definitions For the purposes of this document, the terms and definitions given in EN 10263-1:2017 and thefollowing apply. 3.1 case-hardening steels structural steels with a relatively low carbon content, which are carburized or carbonitrided on theirsurface and subsequently hardened Note 1 to entry: These steels,after hardening, have a high degree of hardness in the surface zone and goodresistance to wear, while the core material is characterized principally by extreme toughness. Note 2 to entry: Further possibilities for heat treatment of case-hardening steels are, for example,nitrocarburizingand nitriding. 4Classification and Designation4.1 Classification All steels covered by this part of EN 10263 are special steels according to EN 10020. Steel grades from C10E2C to C20E2C as quoted in Table 3 are non-alloy steels and all others are alloysteels according to EN 10020. 4.2 Designation See EN 10263-1:2017. 5 Production process 5.1 Steelmaking process See EN 10263-1:2017. 5.2 Deoxidation All steels quoted in Table 3 shall be deoxidised. 6 Requirements 6.1 Delivery conditions The delivery conditions in which the products covered by this part of EN 10263 are normally supplied,the product forms and the applicable requirements are given in Tables 1 and 2. 6.2 Chemical composition 6.2.1 Cast analysis The chemical composition shall be in accordance with the values specified in Table 3 for the castanalysis. 6.2.2 Product analysis In cases where a product analysis is requested, the admissible deviations from the values specified forthe cast analysis are indicated in Table 4. 6.3 Mechanical properties The mechanical properties of the products, to be determined by the tensile test or hardness test, shallbe in...
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