Creusot Loire Industrie

Tecphy

Jean-Christophe Gagnepain

Francois Dupoiron

Richard Cozar

Michel Verneau

Bernard Mayonobe

The invention provides a steel containing by weight 23% .ltoreq.Cr.ltoreq.28%; 15%.ltoreq.Ni.ltoreq.28%; 0.5%.ltoreq.Mn.ltoreq.6%; 3%.ltoreq.Mo.ltoreq.8%; 0.35%.ltoreq.N.ltoreq.0.8%; and 1%.ltoreq.W.ltoreq.5%. The steel has a high resistance to corrosion and may be used for manufacturing massive parts for any application, in particular for manufacturing equipment for oil platforms and chemical works, containers for transporting corrosive products, ship hulls and ply sheets.

Austenitic stainless steel having high properties

The steel contains, in proportions by weight, from 20 to 30% of chromium, from 25 to 32% of nickel, from 3 to 7% of molybdenum, from 0.35 to 0.8% of nitrogen, from 0.5 to 5.4% of manganese, up to 0.06% of carbon and up to 1% of silicon. Because of its multifariousness of corrosion resistance the steel can be employed in particular for the manufacture of equipment for removing pollutants from fumes, of equipment for the paper pulp industry, for the chemical industry or for petroleum exploitation, for seawater plants and for the manufacture of tankers for transporting corrosive products. The steel has a very high structural stability.

Growing community of inventors

Lyon, France

Jean-Christophe Gagnepain