ISO 683-2:2012 pdf download – Heat-treatable steels, alloy steels and free-cutting steels
manufactured from the direct hardening alloy steels and the alloy fame- and induction-hardening steels listed in Table 3 and supplied in one of the heat-treatment conditions given for the different types of products in Table 1 and in one of the surface conditions given in Table 2. The steels are, in general, intended for the manufacture of quenched and tempered or austempered (see 3.2 and Note 2) and fame- or induction-hardened machine parts (see Tables 8 and 9). The requirements for mechanical properties given in this part of ISO 683 are restricted to the sizes given in the relevant Table 8. NOTE 1 Hammer-forged semi-fnished products (blooms, billets, slabs, etc.), seamless rolled rings and hammer-forged bars are in the following covered under semi-fnished products or bars and not under the term “hammer and drop forgings”. NOTE 2 For the purposes of simplifcation, the term “quenched and tempered” is, unless otherwise indicated, used in the following also for the austempered condition. NOTE 3 For International Standards relating to steels complying with the requirements for the chemical composition in Table 3, however, supplied in other product forms or treatment conditions than given above or intended for special applications, and for other related International Standards, see the Bibliography. NOTE 4 This part of ISO 683 does not apply to bright products and bars and wire rod for cold heading. For such products, see ISO 683-18 and ISO 4954.
3.1 ruling section section for which the specifed mechanical properties shall apply
NOTE Independent of the actual shape and dimensions of the cross-section of the product, the size of its ruling section is always given by a diameter. This corresponds to the diameter of an “equivalent round bar”. That is, a round bar which, at the position of its cross-section specifed for taking the test pieces for the mechanical tests, will, when being cooled from austenitizing temperature, shows the same cooling rate as the actual ruling section of the product concerned at its position for taking the test pieces.
5.1 Mandatory information
The manufacturer shall obtain the following information from the purchaser at the time of enquiry and order:
a) the quantity to be delivered;
b) the designation of the product form (slab, bloom, billet, round bar, wire rod, wide fat, sheet, plate, strip,forging, etc.);
c) either the designation of the dimensional standard and the dimensions and tolerances selected from this (see 7.9) or, for example in the case of drop forgings, the designation of the drawing or any other document covering the dimensions and tolerances required for the product;
d) reference to this part of ISO 683, i.e. ISO 683-2;
e) the designation of the steel grade given in Table 3;
f) the symbol for the required heat-treatment condition (see Table 1, column 2);
g) standard designation for a test report 2.2 or, if required any other type of inspection document in accordance with ISO 10474 or according to another regional standard, e.g. EN 10204 or JISG 0415.