METHOD OF PRODUCING AUSTENITIC IRON/CARBON/MANGANESE STEEL SHEETS HAVING A HIGH STRENGTH AND EXCELLENT TOUGHNESS AND BEING SUITABLE FOR COLD FORMING AND SHEETS THUS PRODUCED
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
N/A
app pub date -
Nov 25, 2014
filing date -
Jul 22, 2003
priority date (Note) -
Published
status (Latency Note)
Importance
Abstract
A cold-rolled austenitic iron/carbon/manganese steel sheet is provided. The strength of which is greater than 950 MPa, the product (strength (in MPa)×elongation at fracture (in %)) of which is greater than 45000 and the chemical composition of which includes, the contents being expressed by weight 0.5%≦C≦0.7%, 17%≦Mn≦24%, Si≦3%, Al≦0.050%, S≦0.030%, P≦0.080% and N≦0.1%. A remainder of the composition includes iron and inevitable impurities resulting from the smelting. A recrystallized fraction of the structure of the steel is greater than 75%, a surface fraction of precipitated carbides of the steel is less than 1.5% and a mean grain size of the steel is less than 6 microns. A reinforcing element is also provided.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully