Steel with improved impact penetration resistance and method for producing the same

• Main Authors: SHIBUE TADASHI, KAWABATA FUMIMARU, ISHIGE KENGO, UCHIDA KIYOSHI, KUDOU JUNICHI, KAKINOUCHI TSUTOMU, TANIGAWA OSAMU
• Format: Patent
• Language: English
• Published: 16.01.2003
• Edition: 7
• Subjects: CHEMISTRY; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS

A steel has a tensile strength of 850 to 1700 MPa, a yield ratio of at most 80%, and a penetration border energy ratio of at least 2.0 relative to the penetration border energy of a reference steel JIS SS400 (corresponding to ASTM A36) of the same thickness. The steel can be produced by first effect...