HIGH-STRENGTH COLD-ROLLED STEEL SHEET HAVING EXCELLENT BENDABILITY
This high-strength rolled steel sheet has a component composition containing, by mass, 0.15 to 0.30% of C, 1.0 to 3.0% of Si, 0.1 to 5.0% of Mn, 0.1% or less of P (not including 0%), 0.010% or less of S (not including 0%), 0.01% or less of N (not including 0%), and 0.001 to 0.10% of Al, with the rem...
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| creator | KAKIUCHI, Elijah SHIBATA, Kosuke MURAKAMI, Toshio KAJIHARA, Katsura |
| description | This high-strength rolled steel sheet has a component composition containing, by mass, 0.15 to 0.30% of C, 1.0 to 3.0% of Si, 0.1 to 5.0% of Mn, 0.1% or less of P (not including 0%), 0.010% or less of S (not including 0%), 0.01% or less of N (not including 0%), and 0.001 to 0.10% of Al, with the remainder being made up by iron and unavoidable impurities, martensite being contained at 95% or above by area ratio, the total area ratio of residual austenite and ferrite being 5% or less (including 0%), the average size of carbides being no greater than 60 nm in terms of equivalent circle diameter, and the number density of carbides having an equivalent circle diameter of at least 25 nm being no greater than 5.0 × 10 5 per 1 mm 2 . The high-strength rolled steel sheet has a yield strength of at least 1180 MPa and a tensile strength of at least 1470 MPa. |
| format | Patent |
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The high-strength rolled steel sheet has a yield strength of at least 1180 MPa and a tensile strength of at least 1470 MPa.</description><language>eng ; fre ; ger</language><subject>ALLOYS ; CHEMISTRY ; FERROUS OR NON-FERROUS ALLOYS ; 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 ; TREATMENT OF ALLOYS OR NON-FERROUS METALS</subject><creationdate>2020</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20200122&DB=EPODOC&CC=EP&NR=3421635B1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,777,882,25545,76296</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20200122&DB=EPODOC&CC=EP&NR=3421635B1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>KAKIUCHI, Elijah</creatorcontrib><creatorcontrib>SHIBATA, Kosuke</creatorcontrib><creatorcontrib>MURAKAMI, Toshio</creatorcontrib><creatorcontrib>KAJIHARA, Katsura</creatorcontrib><title>HIGH-STRENGTH COLD-ROLLED STEEL SHEET HAVING EXCELLENT BENDABILITY</title><description>This high-strength rolled steel sheet has a component composition containing, by mass, 0.15 to 0.30% of C, 1.0 to 3.0% of Si, 0.1 to 5.0% of Mn, 0.1% or less of P (not including 0%), 0.010% or less of S (not including 0%), 0.01% or less of N (not including 0%), and 0.001 to 0.10% of Al, with the remainder being made up by iron and unavoidable impurities, martensite being contained at 95% or above by area ratio, the total area ratio of residual austenite and ferrite being 5% or less (including 0%), the average size of carbides being no greater than 60 nm in terms of equivalent circle diameter, and the number density of carbides having an equivalent circle diameter of at least 25 nm being no greater than 5.0 × 10 5 per 1 mm 2 . The high-strength rolled steel sheet has a yield strength of at least 1180 MPa and a tensile strength of at least 1470 MPa.</description><subject>ALLOYS</subject><subject>CHEMISTRY</subject><subject>FERROUS OR NON-FERROUS ALLOYS</subject><subject>GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS</subject><subject>MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS</subject><subject>METALLURGY</subject><subject>METALLURGY OF IRON</subject><subject>MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS</subject><subject>TREATMENT OF ALLOYS OR NON-FERROUS METALS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2020</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZHDy8HT30A0OCXL1cw_xUHD293HRDfL38XF1UQgOcXX1UQj2cHUNUfBwDPP0c1dwjXB2Bcr5hSg4ufq5ODp5-niGRPIwsKYl5hSn8kJpbgYFN9cQZw_d1IL8-NTigsTk1LzUknjXAGMTI0MzY1MnQ2MilAAArVMqzg</recordid><startdate>20200122</startdate><enddate>20200122</enddate><creator>KAKIUCHI, Elijah</creator><creator>SHIBATA, Kosuke</creator><creator>MURAKAMI, Toshio</creator><creator>KAJIHARA, Katsura</creator><scope>EVB</scope></search><sort><creationdate>20200122</creationdate><title>HIGH-STRENGTH COLD-ROLLED STEEL SHEET HAVING EXCELLENT BENDABILITY</title><author>KAKIUCHI, Elijah ; SHIBATA, Kosuke ; MURAKAMI, Toshio ; KAJIHARA, Katsura</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_EP3421635B13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre ; ger</language><creationdate>2020</creationdate><topic>ALLOYS</topic><topic>CHEMISTRY</topic><topic>FERROUS OR NON-FERROUS ALLOYS</topic><topic>GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS</topic><topic>MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS</topic><topic>METALLURGY</topic><topic>METALLURGY OF IRON</topic><topic>MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS</topic><topic>TREATMENT OF ALLOYS OR NON-FERROUS METALS</topic><toplevel>online_resources</toplevel><creatorcontrib>KAKIUCHI, Elijah</creatorcontrib><creatorcontrib>SHIBATA, Kosuke</creatorcontrib><creatorcontrib>MURAKAMI, Toshio</creatorcontrib><creatorcontrib>KAJIHARA, Katsura</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>KAKIUCHI, Elijah</au><au>SHIBATA, Kosuke</au><au>MURAKAMI, Toshio</au><au>KAJIHARA, Katsura</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>HIGH-STRENGTH COLD-ROLLED STEEL SHEET HAVING EXCELLENT BENDABILITY</title><date>2020-01-22</date><risdate>2020</risdate><abstract>This high-strength rolled steel sheet has a component composition containing, by mass, 0.15 to 0.30% of C, 1.0 to 3.0% of Si, 0.1 to 5.0% of Mn, 0.1% or less of P (not including 0%), 0.010% or less of S (not including 0%), 0.01% or less of N (not including 0%), and 0.001 to 0.10% of Al, with the remainder being made up by iron and unavoidable impurities, martensite being contained at 95% or above by area ratio, the total area ratio of residual austenite and ferrite being 5% or less (including 0%), the average size of carbides being no greater than 60 nm in terms of equivalent circle diameter, and the number density of carbides having an equivalent circle diameter of at least 25 nm being no greater than 5.0 × 10 5 per 1 mm 2 . The high-strength rolled steel sheet has a yield strength of at least 1180 MPa and a tensile strength of at least 1470 MPa.</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng ; fre ; ger |
| recordid | cdi_epo_espacenet_EP3421635B1 |
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| subjects | ALLOYS CHEMISTRY FERROUS OR NON-FERROUS ALLOYS 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 TREATMENT OF ALLOYS OR NON-FERROUS METALS |
| title | HIGH-STRENGTH COLD-ROLLED STEEL SHEET HAVING EXCELLENT BENDABILITY |
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