公开(公告)号：US09856551B2

公开(公告)日：2018-01-02

申请号：US14725713

申请日：2015-05-29

Applicant: OUTOKUMPU STAINLESS AKTIEBOLAG ,  Siv Liljas

Inventor： Elisabeth Alfonsson ,  Jun Wang ,  Mats Liljas ,  Per Johansson

IPC: C22C38/02 ,  C22C38/06 ,  C22C38/42 ,  C22C38/58 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/00 ,  C22C38/54

CPC classification number: C22C38/58 ,  C21D2211/001 ,  C21D2211/005 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/06 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54

Abstract: A ferritic-austenitic stainless steel having a microstructure containing 35-65 vol-% ferrite and 35-65 vol-% austenite has a chemical composition which contains in weight-%: 0.005-0.07 C, 0.1-2.0 Si, 3-8 Mn, 19-23 Cr, 0.5-1.7 Ni, optionally Mo and/or W in a total amount of max 1.0 (Mo+W/2), optionally Cu up to max 1.0 Cu, 0.15-0.30 N, balance iron and impurities. The following conditions apply for the chromium and nickel equivalents: 20