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Title:
HOT STAMPING PART AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/234509
Kind Code:
A1
Abstract:
The present invention provides a hot stamping part, which comprises: a base material; a decarburized layer disposed on the surface of the base material; and an inner oxide layer disposed on the surface of the decarburized layer, wherein the hot stamping part has a tensile strength (TS) of 1680-2000 MPa, and the hardness of the hot stamping part within a depth of 50㎛ from the surface in the plate thickness direction of the hot stamping part and the average hardness of the hot stamping part satisfy relational expression 1. (A / B) ≤ 0.7 (In relational expression 1, A is the hardness (Hv (≤50㎛)) within a depth of 50㎛ in the plate thickness direction of the hot stamping part, and B is the average hardness (Hv (avg.)) of the hot stamping part.)

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Inventors:
JANG MIN HO (KR)
KANG SEOK HYEON (KR)
PARK MIN SUH (KR)
HAN SEONG KYUNG (KR)
Application Number:
PCT/KR2022/020565
Publication Date:
December 07, 2023
Filing Date:
December 16, 2022
Export Citation:
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Assignee:
HYUNDAI STEEL CO (KR)
International Classes:
C21D8/02; B21D22/02; C21D9/46
Foreign References:
KR20210037106A2021-04-06
KR20180043331A2018-04-27
KR20210080176A2021-06-30
KR20210080677A2021-07-01
KR20190001493A2019-01-04
Attorney, Agent or Firm:
Y.P.LEE, MOCK & PARTNERS (KR)
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