PD 970:2005

Committees responsible
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Designation
5 Information to be supplied by the purchaser
6 Manufacturing process
7 Requirements
8 Inspection and testing
9 Marking
10 Specific requirements for hot rolled or normalized or
   softened steels and for steels supplied as cold finished
   bar
11 Specific requirements for quenched and tempered steels
   including steels capable of surface hardening by nitriding
   for special applications
12 Specific requirements for case hardening steels
13 Specific requirements for tolerances
14 Cut end condition
Annex A (informative) Correlation between steels from
                      BS 970-1:1983, PD 970:2005 and current
                      nationally adopted European Standards
Bibliography
Figures
Tables

Describes the technical purchase and supply requirements for the following wrought semi-finished products manufactured from a range of carbon, carbon manganese, low alloy, free-cutting, case-hardening and through hardened steels for the following special applications: - blooms; - billets; - slabs; - bars; - rod; - flats and wide flats.

This Published Document specifies the technical purchase and supply requirements for the following wrought semi-finished products manufactured from a range of carbon, carbon manganese, low alloy, free-cutting, case-hardening and through hardened steels for the following special applications:

• blooms;

• billets;

• slabs;

• bars;

• rod;

• flats and wide flats.

NOTE These wrought steels may be supplied in the hot formed condition or as thermally treated black bar. Cold finished bar may be subjected to pre- or post-thermal treatment.

It does not specify any boron, micro-alloyed, stainless steels or any products delivered as forgings, which are all covered by other standards (see Foreword).

It does not apply to direct cast products.

PD 970 is presented in the style of a European Standard and references other European Standards (e.g. test methods) wherever possible. The traditional seven digit alphanumeric UK designation is maintained, though it is important to note that the \'A\', \'M\' and \'H\' system (nominally representing Analysis, Mechanical and Hardenability) should not be confused with other nomenclature. This applies equally to the conventional tensile strength range designations, namely P through to Z which are still used in this document.

Certain other aspects such as requirements for steelmaking, deoxidation and grain size have been revised to reflect modern technology.