STEEL SHEET AND HIGH STRENGTH PRESS HARDENED STEEL PART HAVING EXCELLENT BENDING AND METHOD OF MANUFACTURING THE SAME
Steel sheet having a chemical composition comprising in wt% C : 0.2 - 0.4%, Mn : 0.8 - 2.0%, Si : 0.1 - 0.5 %, Al : 0.01 - 0.1 %, Ti: 0.01 - 0.1 %, B: 0.0005 - 0.005 %, P ≤ 0.040 %, Ca ≤ 0.01%, S ≤ 0.006 %, N ≤ 0.01 %, Said steel sheet comprising from the bulk to the surface of the coated steel shee...
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| creator | LUCAS, Emmanuel STECHMANN, Guillaume DUMONT, Alice SALIB, Matthieu |
| description | Steel sheet having a chemical composition comprising in wt% C : 0.2 - 0.4%, Mn : 0.8 - 2.0%, Si : 0.1 - 0.5 %, Al : 0.01 - 0.1 %, Ti: 0.01 - 0.1 %, B: 0.0005 - 0.005 %, P ≤ 0.040 %, Ca ≤ 0.01%, S ≤ 0.006 %, N ≤ 0.01 %, Said steel sheet comprising from the bulk to the surface of the coated steel sheet a bulk and a skin layer occupying the outermost 10% of the thickness on either side of the bulk, such bulk being topped by a skin layer occupying the outermost 10% of the thickness on either side of the bulk, the density of TiN / Ti(C,N) inclusions in said skin being smaller than 240 particles / mm2 and the clustering index of MnS inclusions in said skin being lower than 110 μm/mm2. This allows to manufacture hot pressed parts having a tensile strength equal to or greater than 1300MPa and a bending angle normalized to 1.5mm and measured in the transverse direction strictly greater than 48°.
L'invention concerne une tôle d'acier ayant une composition chimique comprenant en % en poids C : de 0,2 à 0,4 %, Mn : de 0,8 à 2,0 %, Si : de 0,1 à 0,5 %, Al : de 0,01 à 0,1 %, Ti : de 0,01 à 0,1 %, B : de 0,0005 à 0,005 %, P ≤ 0,040 %, Ca ≤ 0,01 %, S ≤ 0,006 %, N ≤ 0,01 %, ladite tôle d'acier comprenant à partir de la masse jusqu'à la surface de la tôle d'acier revêtue une masse et une couche de pellicule occupant les 10 % les plus à l'extérieur de l'épaisseur de part et d'autre de la masse, une telle masse étant surmontée d'une couche de pellicule occupant les 10 % les plus à l'extérieur de l'épaisseur de part et d'autre de la masse, la densité d'inclusions de TiN/Ti(C,N) dans ladite pellicule étant inférieure à 240 particules/mm2 et l'indice de regroupement des inclusions de MnS dans ladite pellicule étant inférieur à 110 μm/mm2. Ceci permet de fabriquer des pièces embouties à chaud ayant une résistance à la traction supérieure ou égale à 1 300 MPa et un angle de flexion normalisé à 1,5 mm et mesuré dans la direction transversale strictement supérieure à 48°. |
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| fullrecord | <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_WO2025003735A1</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>WO2025003735A1</sourcerecordid><originalsourceid>FETCH-epo_espacenet_WO2025003735A13</originalsourceid><addsrcrecordid>eNqNjMEKgkAURd20iOofHrQOTJHWk3P1CTrKzNPaicS0ihKs_y-pD2h14dzDWQYvJ0BJjgEhZTRxkTM5sTC5MDUWzhErq2Gg6Ss3ysqHdYXJCecUZQkjdITRM5kjFYRrTXVGlTJtplJp7fwJg5yqsA4W1-E2-c1vV8E2g6S88-Oj99M4XPzdP_tTHYVREobxIU7UPv7PegOJTjmS</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>STEEL SHEET AND HIGH STRENGTH PRESS HARDENED STEEL PART HAVING EXCELLENT BENDING AND METHOD OF MANUFACTURING THE SAME</title><source>esp@cenet</source><creator>LUCAS, Emmanuel ; STECHMANN, Guillaume ; DUMONT, Alice ; SALIB, Matthieu</creator><creatorcontrib>LUCAS, Emmanuel ; STECHMANN, Guillaume ; DUMONT, Alice ; SALIB, Matthieu</creatorcontrib><description>Steel sheet having a chemical composition comprising in wt% C : 0.2 - 0.4%, Mn : 0.8 - 2.0%, Si : 0.1 - 0.5 %, Al : 0.01 - 0.1 %, Ti: 0.01 - 0.1 %, B: 0.0005 - 0.005 %, P ≤ 0.040 %, Ca ≤ 0.01%, S ≤ 0.006 %, N ≤ 0.01 %, Said steel sheet comprising from the bulk to the surface of the coated steel sheet a bulk and a skin layer occupying the outermost 10% of the thickness on either side of the bulk, such bulk being topped by a skin layer occupying the outermost 10% of the thickness on either side of the bulk, the density of TiN / Ti(C,N) inclusions in said skin being smaller than 240 particles / mm2 and the clustering index of MnS inclusions in said skin being lower than 110 μm/mm2. This allows to manufacture hot pressed parts having a tensile strength equal to or greater than 1300MPa and a bending angle normalized to 1.5mm and measured in the transverse direction strictly greater than 48°.
L'invention concerne une tôle d'acier ayant une composition chimique comprenant en % en poids C : de 0,2 à 0,4 %, Mn : de 0,8 à 2,0 %, Si : de 0,1 à 0,5 %, Al : de 0,01 à 0,1 %, Ti : de 0,01 à 0,1 %, B : de 0,0005 à 0,005 %, P ≤ 0,040 %, Ca ≤ 0,01 %, S ≤ 0,006 %, N ≤ 0,01 %, ladite tôle d'acier comprenant à partir de la masse jusqu'à la surface de la tôle d'acier revêtue une masse et une couche de pellicule occupant les 10 % les plus à l'extérieur de l'épaisseur de part et d'autre de la masse, une telle masse étant surmontée d'une couche de pellicule occupant les 10 % les plus à l'extérieur de l'épaisseur de part et d'autre de la masse, la densité d'inclusions de TiN/Ti(C,N) dans ladite pellicule étant inférieure à 240 particules/mm2 et l'indice de regroupement des inclusions de MnS dans ladite pellicule étant inférieur à 110 μm/mm2. Ceci permet de fabriquer des pièces embouties à chaud ayant une résistance à la traction supérieure ou égale à 1 300 MPa et un angle de flexion normalisé à 1,5 mm et mesuré dans la direction transversale strictement supérieure à 48°.</description><language>eng ; fre</language><subject>ALLOYS ; CHEMICAL SURFACE TREATMENT ; CHEMISTRY ; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL ; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL ; COATING MATERIAL WITH METALLIC MATERIAL ; COATING METALLIC MATERIAL ; DIFFUSION TREATMENT OF METALLIC MATERIAL ; FERROUS OR NON-FERROUS ALLOYS ; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS ; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL ; LAYERED PRODUCTS ; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM ; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS ; METALLURGY ; METALLURGY OF IRON ; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS ; PERFORMING OPERATIONS ; PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL ; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION ; TRANSPORTING ; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS ; TREATMENT OF ALLOYS OR NON-FERROUS METALS</subject><creationdate>2025</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=20250102&DB=EPODOC&CC=WO&NR=2025003735A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20250102&DB=EPODOC&CC=WO&NR=2025003735A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>LUCAS, Emmanuel</creatorcontrib><creatorcontrib>STECHMANN, Guillaume</creatorcontrib><creatorcontrib>DUMONT, Alice</creatorcontrib><creatorcontrib>SALIB, Matthieu</creatorcontrib><title>STEEL SHEET AND HIGH STRENGTH PRESS HARDENED STEEL PART HAVING EXCELLENT BENDING AND METHOD OF MANUFACTURING THE SAME</title><description>Steel sheet having a chemical composition comprising in wt% C : 0.2 - 0.4%, Mn : 0.8 - 2.0%, Si : 0.1 - 0.5 %, Al : 0.01 - 0.1 %, Ti: 0.01 - 0.1 %, B: 0.0005 - 0.005 %, P ≤ 0.040 %, Ca ≤ 0.01%, S ≤ 0.006 %, N ≤ 0.01 %, Said steel sheet comprising from the bulk to the surface of the coated steel sheet a bulk and a skin layer occupying the outermost 10% of the thickness on either side of the bulk, such bulk being topped by a skin layer occupying the outermost 10% of the thickness on either side of the bulk, the density of TiN / Ti(C,N) inclusions in said skin being smaller than 240 particles / mm2 and the clustering index of MnS inclusions in said skin being lower than 110 μm/mm2. This allows to manufacture hot pressed parts having a tensile strength equal to or greater than 1300MPa and a bending angle normalized to 1.5mm and measured in the transverse direction strictly greater than 48°.
L'invention concerne une tôle d'acier ayant une composition chimique comprenant en % en poids C : de 0,2 à 0,4 %, Mn : de 0,8 à 2,0 %, Si : de 0,1 à 0,5 %, Al : de 0,01 à 0,1 %, Ti : de 0,01 à 0,1 %, B : de 0,0005 à 0,005 %, P ≤ 0,040 %, Ca ≤ 0,01 %, S ≤ 0,006 %, N ≤ 0,01 %, ladite tôle d'acier comprenant à partir de la masse jusqu'à la surface de la tôle d'acier revêtue une masse et une couche de pellicule occupant les 10 % les plus à l'extérieur de l'épaisseur de part et d'autre de la masse, une telle masse étant surmontée d'une couche de pellicule occupant les 10 % les plus à l'extérieur de l'épaisseur de part et d'autre de la masse, la densité d'inclusions de TiN/Ti(C,N) dans ladite pellicule étant inférieure à 240 particules/mm2 et l'indice de regroupement des inclusions de MnS dans ladite pellicule étant inférieur à 110 μm/mm2. Ceci permet de fabriquer des pièces embouties à chaud ayant une résistance à la traction supérieure ou égale à 1 300 MPa et un angle de flexion normalisé à 1,5 mm et mesuré dans la direction transversale strictement supérieure à 48°.</description><subject>ALLOYS</subject><subject>CHEMICAL SURFACE TREATMENT</subject><subject>CHEMISTRY</subject><subject>COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL</subject><subject>COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL</subject><subject>COATING MATERIAL WITH METALLIC MATERIAL</subject><subject>COATING METALLIC MATERIAL</subject><subject>DIFFUSION TREATMENT OF METALLIC MATERIAL</subject><subject>FERROUS OR NON-FERROUS ALLOYS</subject><subject>GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS</subject><subject>INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL</subject><subject>LAYERED PRODUCTS</subject><subject>LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM</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>PERFORMING OPERATIONS</subject><subject>PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL</subject><subject>SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION</subject><subject>TRANSPORTING</subject><subject>TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS</subject><subject>TREATMENT OF ALLOYS OR NON-FERROUS METALS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2025</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNjMEKgkAURd20iOofHrQOTJHWk3P1CTrKzNPaicS0ihKs_y-pD2h14dzDWQYvJ0BJjgEhZTRxkTM5sTC5MDUWzhErq2Gg6Ss3ysqHdYXJCecUZQkjdITRM5kjFYRrTXVGlTJtplJp7fwJg5yqsA4W1-E2-c1vV8E2g6S88-Oj99M4XPzdP_tTHYVREobxIU7UPv7PegOJTjmS</recordid><startdate>20250102</startdate><enddate>20250102</enddate><creator>LUCAS, Emmanuel</creator><creator>STECHMANN, Guillaume</creator><creator>DUMONT, Alice</creator><creator>SALIB, Matthieu</creator><scope>EVB</scope></search><sort><creationdate>20250102</creationdate><title>STEEL SHEET AND HIGH STRENGTH PRESS HARDENED STEEL PART HAVING EXCELLENT BENDING AND METHOD OF MANUFACTURING THE SAME</title><author>LUCAS, Emmanuel ; STECHMANN, Guillaume ; DUMONT, Alice ; SALIB, Matthieu</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_WO2025003735A13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre</language><creationdate>2025</creationdate><topic>ALLOYS</topic><topic>CHEMICAL SURFACE TREATMENT</topic><topic>CHEMISTRY</topic><topic>COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL</topic><topic>COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL</topic><topic>COATING MATERIAL WITH METALLIC MATERIAL</topic><topic>COATING METALLIC MATERIAL</topic><topic>DIFFUSION TREATMENT OF METALLIC MATERIAL</topic><topic>FERROUS OR NON-FERROUS ALLOYS</topic><topic>GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS</topic><topic>INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL</topic><topic>LAYERED PRODUCTS</topic><topic>LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM</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>PERFORMING OPERATIONS</topic><topic>PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL</topic><topic>SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION</topic><topic>TRANSPORTING</topic><topic>TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS</topic><topic>TREATMENT OF ALLOYS OR NON-FERROUS METALS</topic><toplevel>online_resources</toplevel><creatorcontrib>LUCAS, Emmanuel</creatorcontrib><creatorcontrib>STECHMANN, Guillaume</creatorcontrib><creatorcontrib>DUMONT, Alice</creatorcontrib><creatorcontrib>SALIB, Matthieu</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>LUCAS, Emmanuel</au><au>STECHMANN, Guillaume</au><au>DUMONT, Alice</au><au>SALIB, Matthieu</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>STEEL SHEET AND HIGH STRENGTH PRESS HARDENED STEEL PART HAVING EXCELLENT BENDING AND METHOD OF MANUFACTURING THE SAME</title><date>2025-01-02</date><risdate>2025</risdate><abstract>Steel sheet having a chemical composition comprising in wt% C : 0.2 - 0.4%, Mn : 0.8 - 2.0%, Si : 0.1 - 0.5 %, Al : 0.01 - 0.1 %, Ti: 0.01 - 0.1 %, B: 0.0005 - 0.005 %, P ≤ 0.040 %, Ca ≤ 0.01%, S ≤ 0.006 %, N ≤ 0.01 %, Said steel sheet comprising from the bulk to the surface of the coated steel sheet a bulk and a skin layer occupying the outermost 10% of the thickness on either side of the bulk, such bulk being topped by a skin layer occupying the outermost 10% of the thickness on either side of the bulk, the density of TiN / Ti(C,N) inclusions in said skin being smaller than 240 particles / mm2 and the clustering index of MnS inclusions in said skin being lower than 110 μm/mm2. This allows to manufacture hot pressed parts having a tensile strength equal to or greater than 1300MPa and a bending angle normalized to 1.5mm and measured in the transverse direction strictly greater than 48°.
L'invention concerne une tôle d'acier ayant une composition chimique comprenant en % en poids C : de 0,2 à 0,4 %, Mn : de 0,8 à 2,0 %, Si : de 0,1 à 0,5 %, Al : de 0,01 à 0,1 %, Ti : de 0,01 à 0,1 %, B : de 0,0005 à 0,005 %, P ≤ 0,040 %, Ca ≤ 0,01 %, S ≤ 0,006 %, N ≤ 0,01 %, ladite tôle d'acier comprenant à partir de la masse jusqu'à la surface de la tôle d'acier revêtue une masse et une couche de pellicule occupant les 10 % les plus à l'extérieur de l'épaisseur de part et d'autre de la masse, une telle masse étant surmontée d'une couche de pellicule occupant les 10 % les plus à l'extérieur de l'épaisseur de part et d'autre de la masse, la densité d'inclusions de TiN/Ti(C,N) dans ladite pellicule étant inférieure à 240 particules/mm2 et l'indice de regroupement des inclusions de MnS dans ladite pellicule étant inférieur à 110 μm/mm2. Ceci permet de fabriquer des pièces embouties à chaud ayant une résistance à la traction supérieure ou égale à 1 300 MPa et un angle de flexion normalisé à 1,5 mm et mesuré dans la direction transversale strictement supérieure à 48°.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | ALLOYS CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL FERROUS OR NON-FERROUS ALLOYS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS PERFORMING OPERATIONS PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TRANSPORTING TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FERROUS METALS |
| title | STEEL SHEET AND HIGH STRENGTH PRESS HARDENED STEEL PART HAVING EXCELLENT BENDING AND METHOD OF MANUFACTURING THE SAME |
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