http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-9221784-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5198a2a21392d6cbc0bb4898b3fb3d29 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C21D2211-005 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C21D2211-002 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C21D2211-001 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C21D8-0426 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22C38-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22C38-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C21D8-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C21D8-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22C38-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22C38-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22C38-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22C38-00 |
| filingDate | 1992-05-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_70a733d6351af2f403e1bd2a24e25e17 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2380ea4c84fbdd8ca923f3544475d39b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ff55cc2eef214ef4eb5423d9dcb01632 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_30d9d95e3c7b835b463040a64b115a9c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_72e464db74573fda61f235a9dd09c7ee |
| publicationDate | 1992-12-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | WO-9221784-A1 |
| titleOfInvention | High-yield-ratio hot-rolled high-strength steel sheet excellent in formability or in both of formability and spot weldability, and production thereof |
| abstract | To provide a high-yield-ratio hot-rolled high-strength steel sheet which is excellent in formability and spot weldability and contains at least 5 % of retained austenite and a process for producing the same. A high-yield-ratio hot-rolled high-strength steel sheet which contains as the main components either 0.05 to less than 0.16 wt % or 0.16 to less than 0.30 wt % of carbon, 0.5 to 3.0 wt % of silicon, 0.5 to 3.0 wt % of manganese, more than 1.5 to 6.0 wt % of silicon and manganese in total, 0.02 wt % or less of phosphorous, 0.01 wt % or less of sulfur, 0.005 to 0.10 wt % of aluminum, and iron, and has a microstructure constituted of three phases of ferrite, bainite and retained austenite, a ratio of the space factor (VF?) of ferrite to the grain diameter (dF?) thereof of 20 or above (or 7 or above when the carbon content is 0.16 to less than 0.30 wt %), a space factor of the retained austenite with a grain size of 2 $g(m)m or less of 5 % or above, a yield ratio (YR) of 60 % or above, a strength-ductility balance (tensile strength times total elongation) of 2,000 kgf/mm?2.% or above, a hole expansion ratio (d/d0?) of 1.4 or above (or 1.1 or above when the carbon content is 0.16 to less than 0.30 wt %), and a uniform elongation of 15 % or above (or 10 % or above when the carbon content is 0.16 to less than 0.30 wt %). |
| priorityDate | 1991-05-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 48.