RAILROAD RAILS OF THE R50 AND R65 TYPES FOR WIDE-GAUGE RAILWAYS, THERMALLY TREATED BY WAY OF VOLUMETRIC OIL HARDENING. TECHNICAL REQUIREMENTS, GOST 18267-72. OFFICIAL PUBLICATION
REL'SY ZHELEZNODOROZHNYE TIPOV P50 I P65 SHIROKOI KOLEI, TERMOOBRRABOTANNYE PUTEM OB"EMHOI ZAKALKI V MASLE. TEKHNICHESKIE TREBOVANIIA GOST 18267-72. IZDANIE OFITSIAL'NOE
The Standard deals with R50 and R65 types of wide-gauge rails, produced from open-hearth, high-carbon steel. Thermally-treated rails have to conform to requirements of GOST-s 6944-63; 7174-65; 8160-63; and 9160-63, and also to chemical composition indicated in the Table of this Standard. Mechanical specifications of steel are presented in a Table, and concern hardness, provisional resistance, yield-point, relative extension and contraction, and impact strength. Hardness on the rolling surface of the rail head should be NV331 to 388, hardness of the web and flange of the rail - not over NV388. Hardened rails have to undergo acceptance inspection and tests. Chemical composition is tested according to GOST 2331-63. Sampling for chemical tests is made according to GOST 7565-66. Hardness on the rolling head surface and on the rail cross-section is determined according to GOST 9012-59.
- Abstract only is available in English, original untranslated as of December 1976.
USSR Council of MinistersState Committee for Standards
- Publication Date: 1972
- Features: Tables;
- Pagination: 8 p.
- TRT Terms: Alloy steel; Fatigue strength; Metal hardening; Metal heating; Rail (Railroads); Rail steel; Specifications; Structural design
- Uncontrolled Terms: Heat treatment
- Old TRIS Terms: Rail design; Rail hardening; Rail steel metallurgy
- Subject Areas: Data and Information Technology; Design; Railroads;
- Accession Number: 00144475
- Record Type: Publication
- Source Agency: Federal Railroad Administration
- Files: TRIS, USDOT
- Created Date: Feb 16 1977 12:00AM