Abstract: This hot-stamp molded body includes: a first region having a metal structure in which the martensite area ratio is 95% or more and the average aspect ratio of prior-austenite grains is 1.10 or less; and a second region having a metal structure in which the martensite area ratio is 95% or more and the average aspect ratio of prior-austenite grains is 2.00 or more. The average crystalline grain diameter G1 (µm) of the prior-austenite grains in the first region and the average crystalline grain diameter G2 (µm) of the prior-austenite grains in the second region satisfy [G1=15.0], [G2=25.0], and [G2-G1=3.0]. The tensile strength measured by a tensile test using a test piece taken from the first region is 1250-2540 MPa.
| # | Name | Date |
|---|---|---|
| 1 | 202517085401-STATEMENT OF UNDERTAKING (FORM 3) [09-09-2025(online)].pdf | 2025-09-09 |
| 2 | 202517085401-REQUEST FOR EXAMINATION (FORM-18) [09-09-2025(online)].pdf | 2025-09-09 |
| 3 | 202517085401-PROOF OF RIGHT [09-09-2025(online)].pdf | 2025-09-09 |
| 4 | 202517085401-POWER OF AUTHORITY [09-09-2025(online)].pdf | 2025-09-09 |
| 5 | 202517085401-FORM 18 [09-09-2025(online)].pdf | 2025-09-09 |
| 6 | 202517085401-FORM 1 [09-09-2025(online)].pdf | 2025-09-09 |
| 7 | 202517085401-FIGURE OF ABSTRACT [09-09-2025(online)].pdf | 2025-09-09 |
| 8 | 202517085401-DRAWINGS [09-09-2025(online)].pdf | 2025-09-09 |
| 9 | 202517085401-DECLARATION OF INVENTORSHIP (FORM 5) [09-09-2025(online)].pdf | 2025-09-09 |
| 10 | 202517085401-COMPLETE SPECIFICATION [09-09-2025(online)].pdf | 2025-09-09 |