公开(公告)号：US20240011135A1

公开(公告)日：2024-01-11

申请号：US18008518

申请日：2021-06-11

Applicant: UDDEHOLMS AB

Inventor： Sebastian EJNERMARK ,  Anders KVARNED ,  Richard OLIVER

IPC: C22C38/24 ,  C22C38/22 ,  C22C38/04 ,  C22C38/06 ,  C22C38/02 ,  C21D1/18 ,  C21D1/773 ,  C21D1/32 ,  C21D8/00 ,  C21D9/00

CPC classification number: C22C38/24 ,  C22C38/22 ,  C22C38/04 ,  C22C38/06 ,  C22C38/02 ,  C21D1/18 ,  C21D1/773 ,  C21D1/32 ,  C21D8/005 ,  C21D9/0068 ,  C21D2211/001

Abstract: A matrix type hot work tool steel, in use, has an improved abrasive wear resistance in demanding applications. The steel is suited for applications in hot forging, die casting or hot extrusion. It is also suitable for press hardening, in particular for press hardening of Advance High Strength Steel (AHSS) and has a high hot wear resistance. The hot work tool steel has a composition including, in weight % (wt. %): C 0.65-0.85; Si 0.03-0.8; Mn 0.1-1.8; Cr 4.5-6.6; Mo 1.8-3.5; V 1.3-2.3; Al≤0.1; N≤0.12; Ni≤1; W≤0.5; Co≤2; Cu≤1; Nb≤0.1; Ti≤0.05; Zr≤0.05; Ta≤0.05; B≤0.01; Ca≤0.01; Mg≤0.01; REM≤0.2; and balance Fe and impurities.