ISO 4957:2018 pdf download – Tool steels
If not stated otherwise, this document applies to all types of hot-rolled, forged, cold-drawn or cold- rolled products or products produced by powder metallurgy, which are supplied in one of the surface and heat-treatment conditions given in 6.2 and Table 1. NOTE Tables 2, 4, 6 and 8 cover only those steels which have gained certain international importance, which does not mean, however, that they are available in all industrial countries. In addition, a number of other steels for tools are specified in regional, national or company standards. Where the heat resistance of the tools is of particular importance, as for example in the case of tools for hot forming glass, the material selection is based on ISO 4955.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
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 1035-1, Hot-rolled steel bars — Part 1: Dimensions of round bars
ISO 1035-3, Hot-rolled steel bars — Part 3: Dimensions of flat bars
ISO 1035-4:1982, Hot-rolled steel bars — Part 4: Tolerances
ISO 4885, Ferrous materials — Heat treatments — Vocabulary
ISO 4948-1, Steels — Classification — Part 1: Classification of steels into unalloyed and alloy steels based on chemical composition
ISO/TS 4949, Steel names based on letter symbols
ISO 6506-1, Metallic materials — Brinell hardness test — Part 1: Test method
ISO 6508-1, Metallic materials — Rockwell hardness test — Part 1: Test method
ISO 6929, Steel products — Vocabulary
ISO 7452:2013, Hot rolled steel plates — Tolerances on dimensions and shape
ISO 7788, Steel — Surface finish of hot-rolled plates and wide flats — Delivery requirements
ISO 9443, Surface quality classes for hot-rolled bars and wire rod
ISO/TR 9769, Steel and iron — Review of available methods of analysis
ISO 10474, Steel and steel products — Inspection documents
ISO 14284, Steel and iron — Sampling and preparation of samples for the determination of chemical composition
ISO 17577, Steel — Ultrasonic testing of steel flat products of thickness equal to or greater than 6 mm
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 product form (e.g. round bar);
c) either the dimensional standard and the dimensions and tolerances selected from it (see 7.4) or any other document covering the dimensions and tolerances required for the product;
d) the reference to this document, i.e. ISO 4957;
e) the designation of the steel type (see Tables 2, 4, 6 and 8);
f) the symbol for the heat-treatment condition on delivery (see Table 1) and, if the products are to be delivered in the quenched and tempered condition, the hardness values required;
g) the type of inspection document in accordance with ISO 10474.