BS EN 10084 is the European standard that gives the technical delivery requirements for steels that are in general intended for the fabrication of case-hardened machine parts.
It is applicable to steel in the following formats:
- Semi-finished products, hot formed, for example blooms, billets, slabs:
- Bars
- Rod
- Wide flats, quarto plates
- Hot-rolled sheet/plate and strip
- Hammer and drop forgings
BS EN 10084 applies to steels manufactured from the case hardening non alloyed or alloyed steels listed above, and supplied in one of the heat treatment conditions given for the different types of products covered, and in one of the surface conditions given.
European standards relating to steels complying with the requirements for the chemical composition outlined but that are supplied in other product forms or treatment conditions than given, or are intended for special applications, and European standards for similar steel grades are listed in the Bibliography.
Hammer-forged semi-finished products (blooms, billets, slabs, etc.), seamless rolled rings and hammer-forged bars are included under semi-finished products or bars and not under the term "hammer and drop forgings".
Special agreements shall be made when ordering non-deformed continuously cast semi-finished products.
In addition to the specifications of this European standard, the general technical delivery requirements of BS EN 10021 are applicable, unless otherwise specified.
Contents of BS EN 10084 include:
Scope
Normative references
Terms and definitions
Classification and designation
Classification
Designation
Information to be supplied by the purchaser
Mandatory information
Options
Manufacturing process
Melting process
Deoxidation
Manufacture of the product
Heat-treatment condition and surface finish at the time of delivery
Cast separation
Requirements
Chemical composition, hardness and hardenability
Technological properties
Structure
Internal soundness
Surface condition
Dimensions, tolerances on dimensions and shape
Inspection and testing
Types and contents of inspection documents
Specific inspection and testing
Marking
Options
Dimensional standards applicable to products complying with this
European Standard
Determining the microscopic non-metallic inclusions content
Comparison of steel grades specified in this European Standard and ISO 683-11:1987 and other steel grades previously standardized nationally
Classification of steel grades according to minimum tensile strength as a function of diameter after hardening and tempering at 200 °C
Bibliography
BS EN 10084:2008 replaces BS EN 10084:1998 which has been withdrawn.
