C - Chemistry – Metallurgy – 21 – D
Patent
C - Chemistry, Metallurgy
21
D
C21D 1/18 (2006.01) C21D 1/78 (2006.01) C21D 9/42 (2006.01)
Patent
CA 2350283
Steel has tensile strength of 850 to 1700 MPa and a yield ratio of at most 80% as well as a penetration border energy ratio of at least 2.0 to penetration border energy of reference steel JIS SS400 (corresponding to ASTM A36) of same thickness. The steel is produced by firstly effecting heat treatment 1, then effecting at least once heat treatment 1 or 2 or any combination of them, and lastly effecting heat treatment 2. Heat treatment 1 is to heat the unstable austenitic steel to at least Ac3 transformation temperature and then water-cool the steel to a temperature below 350°C. Heat treatment 2 is to heat the steel to a temperature between Ac3 and Ac1 transformation temperatures and then water-cool the steel to a temperature below 350°C.
Ishige Kengo
Kakinouchi Tsutomu
Kawabata Fumimaru
Kudou Junichi
Shibue Tadashi
Fetherstonhaugh & Co.
Ishikawajima-Harima Jukogyo Kabushiki Kaisha
Jfe Steel Corporation
Kawasaki Steel Corporation
LandOfFree
Steel with improved impact penetration resistance and method... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Steel with improved impact penetration resistance and method..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Steel with improved impact penetration resistance and method... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1493595