The B 12 Specialists Committee was entrusted with the study of materials employed in wagon construction which were resistant to atmospheric corrosion and the effects of abrasion, the object of their study being to facilitate an increase in the periods between maintenance overhauls. The B 12 Committee instituted laboratory (or in the open air) tests and practical tests on wagons with a view to confirming that the selection of the 2 carbon bearing steels, non-alloyed, but containing between 0.20 and 0.50% copper or possibly the E 39 Committee's recommended choice of certain slightly alloyed and diversely composed steels was well-suited to the line of research being followed. Although the wagon tests were not conducted over a very long period, there was no significant contradiction between the results of the different tests (laboratory, open air, wagon), and thus it was possible to draw the following conclusions: the steels with a copper content greater than 0.25% behave appreciably better than those without copper additive as regards resistance to weathering; the slightly alloyed steels of diverse composition but with a copper content greater than 0.25% behave as satisfactorily as the carbon bearing steels having added copper and also offer the advantage of a better resistance to abrasion, and the performance of copper bearing steels with regard to the adhesion of protective paints is no different than that of ordinary carbon bearing steels. Thus the B 12 Committee recommends the Administrations use the copper bearing steels for body plates less than or equal to 4 mm thick and for components forming part of the underframe and made of bent steel plate less than or equal to 8 mm thick. Broadly speaking, when the corrosion problem is very serious, copper bearing steels (steels complying with UIC leaflets or brand steels) are recommended, and when the corrosion is accompanied by abrasion effects preference is given to the steels.

  • Supplemental Notes:
    • Restrictions on the use of this document are contained in the explanatory material.
  • Corporate Authors:

    International Union of Railways

    Office of Research and Experiments
    Utrecht,   Netherlands 
  • Publication Date: 1968-4

Media Info

  • Features: Appendices;
  • Pagination: 31 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00053120
  • Record Type: Publication
  • Source Agency: International Union of Railways
  • Report/Paper Numbers: B12/RP 15/E
  • Files: TRIS
  • Created Date: Jul 22 1976 12:00AM