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:
Apr. 14, 2015
Filed:
Jun. 07, 2007
Jean Leyer, Valenciennes, FR;
Bruno Vandenberghe, Onnaing, FR;
Viviane Lepingle, Corbehem, FR;
Ghislain Louis, Chateau l'Abbaye, FR;
Annie Fouquet, Taisnieres en Thierache, FR;
Catheline Petelot, Taisnieres en Thierache, FR;
Emilie Petelot, Taisnieres en Thierache, FR;
Adeline Petelot, Taisnieres en Thierache, FR;
Daniel Petelot, Taisnieres en Thierache, FR;
Jean Leyer, Valenciennes, FR;
Bruno Vandenberghe, Onnaing, FR;
Viviane Lepingle, Corbehem, FR;
Ghislain Louis, Chateau l'Abbaye, FR;
V & M France, Boulogne-Billancourt, FR;
Other;
Abstract
The invention concerns steels having excellent resistance over time, in a corrosive atmosphere due to oxidizing environments such as, for example, fumes or water vapor, under high pressure and/or temperature. The invention concerns a steel composition for special applications, said composition containing, by weight, about 1.8 to 11% of chromium (and preferably between about 2.3 and 10% of chromium), less than 1% of silicon, and between 0.20 and 0.45% of manganese. It has been found that it is possible to adjust the contents of the composition based on a predetermined model, selected to obtain substantially optimal properties with respect to corrosion in specific conditions of high temperature performances. Said model can involve as additive of as residue at least one element selected among molybdenum, tungsten, cobalt, and nickel.