ISO 683-18-2014 pdf free.Heat-treatable steels, alloy steels and free-cutting steels – Part 18: Bright steel products.
1.1 This part of ISO 683 specifies the technical delivery requirements for bright steel bars in the drawn or peeled/turned condition and they are intended for mechanical purposes, for example for machine parts. The bright bars are subdivided into the following steel types:
a) non-alloy general engineering steels;
b) non-alloy free-cutting steels;
c) non-alloy and alloy case-hardening steels;
d) non-alloy and alloy steels for quenching and tempering;
e) stainless steels.
1.2 In addition to this part of ISO 683, the general technical delivery requirements of ISO 404 are applicable.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 148-1, Metallic materials — Charpy pendulum impact test — Part 1: Test method
ISO 286-2, Geometrical product specifications (GPS) — iSO code system for tolerances on linear sizes — Part 2: Tables of standard tolerance classes and limit deviations for holes and shafts
ISO 377, Steel and steel products — Location and preparation of samples and test pieces for mechanical testing
ISO 404, Steel and steel products — General technical delivery requirements ISO 643, Steels — Micrographic determination of the apparent grain size
ISO 683-1, Heat-treatable steels, alloy steels and free-cutting steels — Part 1: Non-alloy steels for quenching and tern pering
ISO 683-2, Heat-treatable steels, alloy steels and free-cutting steels — Part 2: Alloy steels for quenching and tempering
3 Terms and definitions
For the purposes of this document, the terms and definitions given In ISO 377. Iso 4885, Iso 4948-1, ISO 4948-2, ISO 6929, ISO 14284 and the following apply.
3.1 bright steel products
are drawn or peeled/turned bars with smoother surface quality and better dimensional accuracy in comparison with hot-rolled bars
3.2 drawn products
products of various cross-sectional shapes obtained, after descaling. by cold drawing of hot-rolled bars or rod, on a drawing bench (cold deformation without removing material)
Note 1 to entry: This operation gives the product special features with respect to shape, dimensional accuracy and surface finish. Products in lengths are delivered straightened, products of small cross-section may also be supplied In coils.
3.3 peeled/turned products
steel bars of circular cross-section having the same features of drawn products concerning shape. dimensional accuracy and bright surface finish but without work hardening
Note 1 to entry: They are produced by peeling on a peeling machine usually followed by straightening and by polishing. The removal of metal by peeling is carried out in such a way that the bright product is generally free from surface defects and decarburization coming from the hot-rolling process.
3.4 ground products
drawn or peeled/turned round bars given an improved surface quality and dimensional accuracy by grinding or by grinding and polishing.ISO 683 pdf free download.
Tags: Heat-treatable steels
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