GB1436655A - Process of producing hard stainless steels - Google Patents

Process of producing hard stainless steels

Info

Publication number
GB1436655A
GB1436655A GB1499474A GB1499474A GB1436655A GB 1436655 A GB1436655 A GB 1436655A GB 1499474 A GB1499474 A GB 1499474A GB 1499474 A GB1499474 A GB 1499474A GB 1436655 A GB1436655 A GB 1436655A
Authority
GB
United Kingdom
Prior art keywords
stainless steels
producing hard
april
hard stainless
stainless steel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1499474A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Seiko Instruments Inc filed Critical Seiko Instruments Inc
Publication of GB1436655A publication Critical patent/GB1436655A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/02—Hardening by precipitation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Steel (AREA)

Abstract

1436655 Heat-treating stainless steel DAINI SEIKOSHA KK 4 April 1974 [11 April 1973] 14994/74 Heading C7A An austentic-ferritic stainless steel containing in percentage by wt. is solution treated (e.g. at 1100‹C) and then aged at 500-1000‹C for a time sufficient to transform a substantial amount of ferrite into sigma phase. Ageing is preferably carried out at 700-1000‹C for 3-10 hours. The steel is used particularly for wrist watch cases and bands.
GB1499474A 1973-04-11 1974-04-04 Process of producing hard stainless steels Expired GB1436655A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4035073A JPS49126511A (en) 1973-04-11 1973-04-11

Publications (1)

Publication Number Publication Date
GB1436655A true GB1436655A (en) 1976-05-19

Family

ID=12578172

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1499474A Expired GB1436655A (en) 1973-04-11 1974-04-04 Process of producing hard stainless steels

Country Status (3)

Country Link
JP (1) JPS49126511A (en)
CH (1) CH585276A5 (en)
GB (1) GB1436655A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3249059A1 (en) * 2016-05-27 2017-11-29 The Swatch Group Research and Development Ltd. Method for thermal treatment of austenitic steels and austenitic steels thus obtained
EP3995600A1 (en) * 2020-11-09 2022-05-11 The Swatch Group Research and Development Ltd Paramagnetic hard stainless steel and its manufacturing process
CN114990444A (en) * 2022-06-16 2022-09-02 浙江青山钢铁有限公司 Sulfur-containing tellurium-containing free-cutting 304 stainless steel and preparation method thereof

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56152939A (en) * 1980-04-30 1981-11-26 Seiko Epson Corp Exterior decorative parts for pocket watch
JPS60197816A (en) * 1984-03-19 1985-10-07 Mitsubishi Heavy Ind Ltd Heat treatment of stainless cast steel
EP3835438A1 (en) * 2019-12-13 2021-06-16 The Swatch Group Research and Development Ltd Paramagnetic hard stainless steel and method for manufacturing same
CN118326284B (en) * 2024-06-13 2024-08-16 成都斯杰化工机械有限公司 Corrosion-resistant cavitation-resistant stainless steel and preparation method thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3249059A1 (en) * 2016-05-27 2017-11-29 The Swatch Group Research and Development Ltd. Method for thermal treatment of austenitic steels and austenitic steels thus obtained
US11136638B2 (en) 2016-05-27 2021-10-05 The Swatch Group Research And Development Ltd Method for heat treatment of austenitic steels and austenitic steels obtained thereby
EP3995600A1 (en) * 2020-11-09 2022-05-11 The Swatch Group Research and Development Ltd Paramagnetic hard stainless steel and its manufacturing process
WO2022096178A1 (en) * 2020-11-09 2022-05-12 The Swatch Group Research And Development Ltd Hard paramagnetic stainless steel and method for manufacturing same
CN114990444A (en) * 2022-06-16 2022-09-02 浙江青山钢铁有限公司 Sulfur-containing tellurium-containing free-cutting 304 stainless steel and preparation method thereof
CN114990444B (en) * 2022-06-16 2024-03-19 浙江青山钢铁有限公司 Sulfur-containing tellurium-containing free-cutting 304 stainless steel and preparation method thereof

Also Published As

Publication number Publication date
CH585276A5 (en) 1977-02-28
JPS49126511A (en) 1974-12-04

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee