Daniel Szablewski

US Patent:

20110189047, Aug 4, 2011

Filed:

Feb 2, 2010

Appl. No.:

12/698344

Inventors:

Daniel Szablewski - Colorado Springs CO, US
Francisco C. Robles Hernandez - Houston TX, US
C. Isaac Garcia - Pittsburgh PA, US
Semih Kalay - Colorado Springs CO, US
Anthony J. Deardo - Pittsburgh PA, US
Raymundo Ordoniez - Pittsburgh PA, US

Assignee:

TRANSPORTATION TECHNOLOGY CENTER, INC. - Pueblo CO

International Classification:

C22C 38/42
C22C 38/48
C22C 38/46
C22C 38/44

US Classification:

420 91

Abstract:

Railroad rail steels having a pearlitic structure and containing 0.720 to 0.860 wt % carbon; 1.000 to 1.280 wt % manganese; 0.450 to 1.000 wt % silicon; 0.010 to 0.100 wt % copper; 0.150 to 0.280 wt % chromium; 0.0010 to 0.0500 wt % aluminum; 0.050 to 0.120 wt % nickel; 0.100 to 0.260 wt % molybdenum; 0.100 to 0.210 wt % vanadium; 0.0010 to 0.0065 wt % nitrogen; 0.0010 to 0.0080 wt % phosphorus; 0.0010 to 0.0040 wt % sulfur; and 0.0100 to 0.0350 wt % niobium with the remainder of said steel being iron, can be used to make railway rails that are particularly resistant to rolling contact fatigue and, hence, shelling.