Technical requirements (subject to agreement at the time of ordering):
heat treatment (normalization, quenching and tempering);
premachining;
macrostructure control;
UST as per SEP 1921, class C/c;
carrying out of mechanical properties on heat-treated specimens or in delivery;
rating of non-metallic inclusion content as per DIN 50602(K4) or ASTM Е45, method А (A, B, C, D);
grain size as per ASTM Е112 or DIN 50601;
hardenability;
hardness.