FIELD: metallurgy.
SUBSTANCE: invention relates to metallurgy. To increase impact strength and local deformability of steel sheet for hot stamping has chemical composition in wt%: C 0.08 or more and less than 0.20; Si from 0.003 to 0.2; Mn from 1.6-3.5; and other elements, and also has a structure of steel, expressed in ratio of area: Bainite from 1 % to 95 %, ferrite from 5 % to 94 %, the rest amount: one or more ingredients selected from a group consisting of pearlite, martensite and residual austenite, wherein the condition is satisfied: [Mn]+6,67×[C]-2.73≥0, where content of Mn is presented as [Mn], content of C is presented as [C].
EFFECT: increase of high impact strength.
24 cl, 6 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| HOT-ROLLED STEEL SHEET FOR COILED TUBING | 2017 |
|
RU2712159C1 |
| HOT-PRESSED STEEL SHEET PART, METHOD OF ITS MANUFACTURE AND STEEL SHEET FOR HOT PRESSING | 2013 |
|
RU2635056C1 |
| PRODUCTION OF SHEET OR PART FROM SUPERHARD MARTENSITE STEEL AND SHEET AND PART THUS MADE | 2012 |
|
RU2580578C2 |
| HOT-ROLLED STEEL SHEET AND METHOD OF ITS PRODUCTION | 2012 |
|
RU2551727C2 |
| STEEL SHEET FOR HOT STAMPING, METHOD OF MANUFACTURE STEEL SHEET FOR HOT STAMPING, AND ALSO HOT FORMED BY HOT STAMPING BODY | 2016 |
|
RU2683397C1 |
| COLD-ROLLED STEEL SHEET AND METHOD FOR MANUFACTURE THEREOF, AND HOT-FORMED ARTICLE | 2013 |
|
RU2605404C2 |
| METHOD FOR PRODUCTION OF HOT-ROLLING STEEL SHEET PRODUCTS WITH HOT FORMING | 2016 |
|
RU2630082C1 |
| HOT-MOLDED, AIR-HARDENED AND WELDABLE STEEL SHEET | 2015 |
|
RU2695688C1 |
| HOT-PRESSED THICK-SHEET STEEL, PRODUCT MOULDED BY STAMPING, AND METHOD OF MANUFACTURING PRODUCTS MOULDED BY STAMPING | 2013 |
|
RU2628184C1 |
| HOT-FORMED MEMBER AND PROCESS FOR ITS MANUFACTURING | 2014 |
|
RU2659549C2 |
