Patent · US Active

Rail and method for manufacturing same

US11492689B2 · 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	Nov 8, 2022
Priority date	—
Expiry date	Jun 7, 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: 0.70-1.00 mass %, Si: 0.50-1.60 mass %, Mn: 0.20-1.00 mass %, P: ≤0.035 mass %, S: ≤0.012 mass %, Cr: 0.40-1.30 mass %, where Ceq defined by the formula (1) is 1.04-1.25, Ceq=[% C]+([% Si]/11)+([% Mn]/7)+([% Cr]/5.8) (1)

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