The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 02, 2025
Filed:
Jun. 30, 2022
Pangang Group Panzhihua Iron & Steel Research Institute Co., Ltd., Panzhihua, CN;
Jun Yuan, Panzhihua, CN;
Yong Deng, Panzhihua, CN;
Chongmu Chen, Panzhihua, CN;
Yuan Wang, Panzhihua, CN;
Abstract
A moderate-strength steel rail is provided. The chemical composition of the moderate-strength steel rail in weight percentages includes carbon 0.70-0.90 wt %, silicon 0.08-0.65 wt %, manganese 0.69-1.31 wt %, chromium 0.10-0.25 wt %, phosphorus ≤0.020 wt %, sulfur ≤0.020 wt %, and iron 96.85-98.41 wt %. According to a production method for the moderate-strength steel rail of the present invention, the moderate-strength steel rail produced has a rail hardness of 350-370 HB, a wear amount of ≤0.40 g, a contact fatigue life of ≥50,000 times, and a 610 mm steel rail waist opening ≤3.0 mm/400 mm.