Title:
COLD-WORKABLE MECHANICAL STRUCTURAL STEEL, AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2022/181272
Kind Code:
A1
Abstract:
Cold-workable mechanical structural steel comprising C: 0.30-0.45 mass%, Si: 0.10-0.40 mass%, Mn: 0.50-1.00 mass%, P: 0.050 mass% or less, S: 0.050 mass% or less, Cr: 0.80-1.30 mass%, Al: 0.01-0.10 mass%, the balance being iron and unavoidable impurities, wherein: the area ratio of proeutectoid ferrite is 10% to 70%; the steel comprises at least one structure selected from the group consisting of bainite, martensite, and pearlite; and the dislocation density is at least 3.5×1014m-2.
Inventors:
YAMASHITA KOJI
INOUE YUTA
SAKATA MASAYUKI
KOCHI TAKUYA
MATSUMOTO YOSUKE
UCHIDA TATSUNORI
INOUE YUTA
SAKATA MASAYUKI
KOCHI TAKUYA
MATSUMOTO YOSUKE
UCHIDA TATSUNORI
Application Number:
PCT/JP2022/004045
Publication Date:
September 01, 2022
Filing Date:
February 02, 2022
Export Citation:
Assignee:
KOBE STEEL LTD (JP)
International Classes:
C22C38/00; C21D8/06; C22C38/60
Domestic Patent References:
| WO2020130506A1 | 2020-06-25 |
Foreign References:
| JP2001089830A | 2001-04-03 | |||
| JP2020125538A | 2020-08-20 | |||
| JP2013227602A | 2013-11-07 | |||
| JP2006225701A | 2006-08-31 |
Attorney, Agent or Firm:
YAMAO, Norihito (JP)
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