Title:
高硬度耐水素脆化鋼
Document Type and Number:
Japanese Patent JP7339123
Kind Code:
B2
Abstract:
To provide a material that is inexpensive and yet has all of excellent resistance to hydrogen brittleness, tensile characteristics and corrosion resistance.SOLUTION: A high-hardness hydrogen-embrittlement-resistant steel contains, in mass%, C: more than 0.10 to 0.60%, Si: 0.05 to 0.80%, Mn: 2.0 to 10.0%, P: 0.050% or less, S: 0.050% or less, Ni: 8.0 to 18.0%, Cr: 8.0 to 18.0%, Mo: 0.01 to 0.50%, Cu: 0.05 to 1.00%, V: more than 0.50 to 3.00%, Al: 0.001 to 0.100%, N: more than 0.100 to 0.250%, with the balance being Fe and unavoidable impurities, satisfying formula 1: 0.2≤V/{4([C]+[N])}≤1.5, formula 2: 551-462([C]+[N]-0.07[V])-9.2[Si]-8.1[Mn]-13.7[Cr]-29([Ni]+[Cu])-18.5[Mo]≤-100, formula 3: 2.3[Ni]+3.0[Mo]+5.0[Al]+5.6[Cu]-[Cr]-[Si]-1.2[Mn]≥4.0.SELECTED DRAWING: None
Inventors:
Takashi Hosoda
Application Number:
JP2019197017A
Publication Date:
September 05, 2023
Filing Date:
October 30, 2019
Export Citation:
Assignee:
Sanyo Special Steel Co., Ltd.
International Classes:
C22C38/00; C22C38/60
Domestic Patent References:
| JP2019049036A | ||||
| JP2016183372A | ||||
| JP2016014180A | ||||
| JP2012219367A |
Foreign References:
| US20140234153 | ||||
| US20150167134 |
Attorney, Agent or Firm:
Hironori Yokoi
Kenji Yokoi
Satoshi Yokoi
Kenji Yokoi
Satoshi Yokoi