ISO 683-18:2014 pdf free

ISO 683-18:2014 pdf free.Heat-treatable steels, alloy steels and free-cutting steels
For steels ordered in one of the treatment condition in Tables 1 and 2, the requirements for mechanical properties specified in Tables 5 to 15 apply (except for stainless steel bars ordered in condition +2D for which the mechanical properties are to be found in ISO 16143-2). The mechanical property values given in Tables 5 to 15 apply to test pieces which have been taken and prepared in accordance with Figure 1.
In this case, the normal and narrowed hardenability values given in ISO 683-1, ISO 683-2 for special steels and the narrowed hardenability values in ISO 683-3 for alloy special steels are for guidance purposes only.
For stainless steel bars which are intentionally cold work hardened in order to increase their 0,2-proof strength to a specific level, the mechanical properties at room temperature as specified in Table 15 apply. For these products, the mechanical properties are prime, with the condition a secondary property.In this Tables 5 to 14, grades alloyed with further elements for better machinability are not explicitly mentioned, but the mechanical properties are also valid for them (see Tables A.1 to A.5).
Unless otherwise agreed for alloy case-hardening steels, the hardenability requirements given in ISO 683-3:- , Table 5 apply. If agreed at the time of enquiry and order, alloy case-hardening steels with restricted hardenability scatterbands given in ISO 683-3:- -, Table 6 shall be supplied and these values apply in addition to Table 1, columns 6 and 7.
If special steels for quenching and tempering are ordered by using the designations to normal or to narrowed hardenability scatterbands, the values of hardenability given in ISO 683-1 or ISO 683-2 apply in addition to Table 1, columns 8 and 9.
NOTE In Tables 9 to 11, grades alloyed with further elements for better machinability are not explicitly mentioned, but the mechanical properties are also valid for them (see Tables A.3 and A.4).Bright products shall have a smooth, scale free surface. Bright products in the final heat treated condition shall be free from loose surface scale; their surface might be discoloured or darker. For hexagons,squares, flats and profiles with special cross-sections, one cannot achieve – for manufacturing reasons – the same quality of surface finish as for round cross-sections.ISO 683-18 pdf download.