This European Standard gives the technical delivery requirements
— semi-finished products, hot formed, for example blooms,
billets, slabs (see NOTE 2 and NOTE 3),
— bars (see NOTE 2),
— wide flats, quarto plates,
— hot-rolled sheet/plate and strip,
— hammer and drop forgings (see NOTE 2),
manufactured from the case hardening non alloyed or alloyed
steels (see NOTE 4) listed in Table 3 and supplied in one of the
heat treatment conditions given for the different types of products
in Table 1, lines 2 to 7 and in one of the surface conditions given
in Table 2.
The steels are in general intended for the fabrication of
case-hardened (see Clause 3) machine parts.
NOTE 1 European Standards relating to steels complying with the
requirements for the chemical composition in Table 3 but which are
supplied in other product forms or treatment conditions than given
above or are intended for special applications, and European
Standards for similar steel grades are listed in the
NOTE 2 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".
NOTE 3 Special agreements shall be made when ordering
non-deformed continuously cast semi-finished products.
NOTE 4 In accordance with EN 10020, the steels covered by this
European Standard are special steels.
In special cases variations in these technical delivery
requirements or additions to them may form the subject of an
agreement at the time of enquiry and order (see Annex A).
In addition to the specifications of this European Standard, the
general technical delivery requirements of EN 10021 are applicable,
unless otherwise specified.
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