Ultrahochfestes Stahlband und Herstellungsverfahren dafür

Details

Veröffentlichungs-Nr.

EP4733430

Anmeldetag

20. Juni 2024

Veröffentlichung

26. Dezember 2024

Rechtsraum

EP

IPC

C22C38/18, C21D1/26, C21D8/00

Abstract

Disclosed is an ultrahigh-strength steel strip, containing Fe and unavoidable impurity elements. Furthermore, the ultrahigh-strength steel strip further contains the following chemical elements in percentage by mass: C: 0.13-0.20%; Si: 0.15-0.50%; Mn: 1.4-2.0%; B: 0.001-0.004%; Al: 0.01-0.04%; Cr: 0.1-0.4%; Mo: 0.1-0.4%; and Ti+V+Nb≤0.02%. The microstructure thereof comprises granular bainite uniformly dispersed in a coral pattern. Correspondingly, further disclosed is a manufacturing method for the ultrahigh-strength steel strip. The ultrahigh-strength steel strip of the present invention has low anisotropy and high in-roll mechanical uniformity while achieving a tensile strength of 1000 MPa.

Anmelder

Firma

BAOSHAN IRON & STEEL CO., LTD.

Land

🇨🇳 China

Fachgebiete