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US 5,704,997 AGranted
Process for preparing a steel strip and novel steel strip
AssigneeSollac (Societe Anonyme)
InventorsJacques Ouvrard, Michel Chauvire, Jean-Claude Jouvenel
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Abstract
A steel strip and method for its production.
Claims14
A process for producing a steel strip comprising the steps of:
- supplying an ultra-low or low carbon steel hot-rolled strip having carbon content of at most 0.01% by weight,
- cold rolling the strip to obtain a blank,
- annealing the blank,
- cold rolling the annealed blank in at least two runs,
- to provide a steel strip having a tensile strength of greater than or equal to 600 MPa.
2 more elements
An ultra low or low carbon steel strip having:
- a thickness of less than 0.2 mm,
- a tensile strength greater than or equal to 600 MPa,
- an ear rate, C, between 0 and -0.4,
- an anisotropy coefficient, r, between 1.5 and 2.5, and
- carbon content of at most 0.01% by weight.
2 more elements
Dependencies are inferred from the claim text.