Patent ID: 6418994
Filing Date: 2002-07-16
Classification: B60C,C21D,D07B,Y10T

Abstract:
A tire having a carcass reinforcement comprising at least a steel wire, whereinsaid steel wire has a diameter equal to at least 0.05 mm and at most 0.5 mm, and has a tensile strength of at least 2000 MPa; the wire has a ductility in torsion at least equal to 30 twists; the steel of the wire is stainless steel comprising by weight at least 0.02% and at most 0.2% carbon, at least 3% and at most 20% nickel, at least 12% and at most 28% chromium, the sum of the nickel and chromium being at least equal to 20% and at most equal to 35%; and the structure of the steel of the wire is at least 20% by volume martensite and less than 80% by volume austenite.