Back to results
US 11,027,522 B2Granted
Steel sheet for hot stamping
AssigneeNippon Steel Corporation
InventorsGenki Abukawa, Kunio Hayashi, Kazuo Hikida, Kaoru Kawasaki
Life of this patent
Estimating the term…
Abstract
A steel sheet for hot stamping includes a steel structure represented by an area fraction of bainite, fresh martensite and tempered martensite: 80% or more in total, and a product of a number density (pieces/μm2) of carbides and a proportion of carbides precipitated into prior austenite grains in carbides: 0.50 or more.
Claims8
A steel sheet for hot stamping comprising
- a steel structure comprising
- an area fraction of bainite, fresh martensite and tempered martensite:
- 80% or more in total, and
- a product of a number density of carbides, in pieces/μm2, and a proportion of carbides precipitated into prior austenite grains in carbides:
- 0.50 or more and 10 or less.
2 more elements
Dependencies are inferred from the claim text.