Invention Grant
- Patent Title: Abrasion-resistant steel material excellent in fatigue characteristics and method for manufacturing same
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Application No.: US14899277Application Date: 2013-06-27
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Publication No.: US10662492B2Publication Date: 2020-05-26
- Inventor: Hironori Kubo
- Applicant: NISSHIN STEEL CO., LTD.
- Applicant Address: JP Tokyo
- Assignee: NIPPON STEEL NISSHIN CO., LTD.
- Current Assignee: NIPPON STEEL NISSHIN CO., LTD.
- Current Assignee Address: JP Tokyo
- Agency: Clark & Brody LP
- International Application: PCT/JP2013/067732 WO 20130627
- International Announcement: WO2014/207879 WO 20141231
- Main IPC: C21D9/46
- IPC: C21D9/46 ; C22C38/12 ; C22C38/54 ; C21D1/25 ; C21D8/02 ; C21D1/19 ; B22D11/00 ; C21D6/00 ; C22C38/00 ; C22C38/02 ; C22C38/04 ; C22C38/14 ; C22C38/22 ; C22C38/24 ; C22C38/26

Abstract:
An abrasion-resistant steel material excellent in fatigue characteristics having a composition (in mass %) comprising 0.30 to 0.90% of C, 0.05 to 1.00% of Si, 0.10 to 1.50% of Mn, 0.003 to 0.030% of P, 0.001 to 0.020% of S, from 0.10 to 0.70% of Nb, and containing depending on necessity one or more of 1.50% or less of Cr, 0.50% or less of Mo, 0.50% or less of V, 2.00% or less of Ni, 0.10% or less of Ti, and 0.0050% or less of B, the balance Fe and unavoidable impurities, a metallic structure after a temper heat treatment having a Nb-containing carbide dispersed therein, the Nb-containing carbide particles having a particle diameter of 1.0 mm or more that is controlled to 200 particles per mm2 or more, and a maximum particle diameter Dmax of Nb-containing carbide particles in 103 mm3 that is controlled to 18.0 mm or less.
Public/Granted literature
- US20160138125A1 ABRASION-RESISTANT STEEL MATERIAL EXCELLENT IN FATIGUE CHARACTERISTICS AND METHOD FOR MANUFACTURING SAME Public/Granted day:2016-05-19
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