公开(公告)号：US20190226062A1

公开(公告)日：2019-07-25

申请号：US16312528

申请日：2016-12-23

Applicant: ARCELORMITTAL POLAND S.A. ,  INSTYTUT METALURGII ZELAZA IM.ST.STASZICA

Inventor： Tomasz ZYGMUNT ,  Janusz KASPROWICZ ,  Tomasz DZIERZAWCZYK ,  Stanislaw WOJCIK ,  Roman KUZIAK ,  Wladyslaw ZALECKI ,  Ryszard MOLENDA ,  Krzysztof RADWANSKI ,  Andrzej WROZYNA

IPC: C22C38/54 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/44 ,  C22C38/50

Abstract: Object of the invention is multi-phase steel, used for production of standard-gauge rails, characterized by the fact that the content of basic elements in the steel is no less than: C—0.15% wt, Si—0.60% wt, Mn—1.20% wt, Cr—1.20% wt, Ni—0.20% wt, Mo—0.10% wt, and additionally contains: Ti—0.01-0.25% wt, satisfying the relationship (% wt Mo)/(% mas. Ti)>1; Al—0.01-0.80% wt; B—0.001-0.003% wt., H2≤2 ppm, N≤80 ppm, volume of individual constituents is in relation to the total weigh of multiphase steel.