BS EN ISO 683-3:2018

1   Scope This part of ISO 683 specifies the technical delivery requirements for

       —  semi-finished products, hot formed, e.g. blooms, billets, slabs (see Note 1), 
   
   
     
       —  bars (see Note 1), 
   
   
     
       —  wire rod, 
   
   
     
       —  finished flat products, and 
   
   
     
       —  hammer or drop forgings (see Note 1) 
   
 

manufactured from the case-hardening non-alloy or alloy steels listed in Table 3 and supplied in one of the heat-treatment conditions given for the different types of products in Table 1 and in one of the surface conditions given in Table 2. The steels are, in general, intended for the manufacture of case-hardened (see 3.1) machine parts.

   NOTE 1  Hammer-forged semi-finished products (blooms, billets, slabs, etc.), seamless rolled rings and hammer-forged bars are covered under semi-finished products or bars and not under the term “hammer and drop forgings”. 


 
   NOTE 2  For International Standards relating to steels complying with the requirements for the chemical composition in Table 3, however, supplied in other product forms or treatment c...