Patent · US Active

Rail and method for manufacturing same

US11530471B2 · kind B2 · utility

0Cited by

4References

8Claims

0Family size

Assignee

JFE Steel Corporation · JP

Inventors

Keisuke Ando · Wako, JP
Tatsumi Kimura · Kurashiki, JP
Satoshi Igi · Tokyo, JP

Key dates

Filing date	Mar 28, 2019
Grant date	Dec 20, 2022
Priority date	—
Expiry date	Sep 27, 2039

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC21D2211/009
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

The rail having a chemical composition containing C: 0.70-0.85 mass %, Si: 0.50-1.60 mass %, Mn: 0.20-1.00 mass %, P: 0.035 mass % or less, S: 0.012 mass % or less, Cr: 0.40-1.30 mass %, the chemical composition satisfying the formula (1) 0.30≤[% Si]/10+[% Mn]/6+[% Cr]/3≤0.55 (1)

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.