US3383203A - Non-magnetic steels - Google Patents

Non-magnetic steels Download PDF

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Publication number
US3383203A
US3383203A US610009A US61000967A US3383203A US 3383203 A US3383203 A US 3383203A US 610009 A US610009 A US 610009A US 61000967 A US61000967 A US 61000967A US 3383203 A US3383203 A US 3383203A
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US
United States
Prior art keywords
steel
magnetic
steels
austenitic
impact strength
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 - Lifetime
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US610009A
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English (en)
Inventor
Baggstrom Karl Gote
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.)
Saab Bofors AB
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Bofors AB
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Publication date
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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
    • C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese

Definitions

  • the present invention relates to a non-magnetic steel having desirable properties, particularly high impact strength, and to a method of producing said non-magnetic steel. Such steel is used for, among other things, the manufacture of retaining rings used in the electrical industry.
  • the steels consist essentially of carbon 0.50-0.80%, manganese 9.018.0%, silicon ODS-0.80%, chromium 20-60%, nickel 7.0-ll.0%, vanadium 0.60-1.0%, and the remainder iron.
  • austenitic steels having both high tensile strength and high impact strength.
  • the alloys have the following composition:
  • the austenitic steels of desired composition were solution treated and precipitation hardened by (l) annealing at a temperature of about 1150 C. for
  • the austenitic steels so treated were non-magnetic and had high tensile strengths and impact strengths greater than 5.5 kpm./crn.
  • the yield point, 0' has been defined as the load at which a non-proportional elongation corresponding to 0.2% of the original length of the test bar takes place. It is stated in kp./mm. and has been determined in an entirely conventional way, see ISO Recommendation R82.
  • the impact strength tests were carried out with so-called V test bars in Charpy equipment, in accordance with a procedure which conforms entirely to ISO Recommenda- TABLE II Type Composition, percent Yield point Impact of do strength steel 0 Si Mn Cr Ni V lip/mm. Kcv+20 0.,
  • Steels having compositions that do not meet the com position requirements of this invention (such as those disclosed in Belgian Patent 518,985 and US. Patent 2,865,740), when subjected to solution treatment and precipitation hardening, are not converted into steels having the high impact strengths as the non-magnetic austenitic steels of this invention.
  • a non-magnetic, austenitic steel having a high tensile strength and a high impact strength and having a composition consisting essentially of:
  • composition consisting essentially of:
  • a steel according to claim 2 which has an impact strength of at least 5.5 kpm./cm.
  • a steel according to claim 2 which has an impact strength of 8.0 kpm./cm. and consists essentially of:

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Hard Magnetic Materials (AREA)
  • Soft Magnetic Materials (AREA)
US610009A 1962-12-19 1967-01-18 Non-magnetic steels Expired - Lifetime US3383203A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE13711/62A SE303145B (enrdf_load_stackoverflow) 1962-12-19 1962-12-19

Publications (1)

Publication Number Publication Date
US3383203A true US3383203A (en) 1968-05-14

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ID=20297864

Family Applications (1)

Application Number Title Priority Date Filing Date
US610009A Expired - Lifetime US3383203A (en) 1962-12-19 1967-01-18 Non-magnetic steels

Country Status (4)

Country Link
US (1) US3383203A (enrdf_load_stackoverflow)
CH (1) CH442766A (enrdf_load_stackoverflow)
GB (1) GB1060670A (enrdf_load_stackoverflow)
SE (1) SE303145B (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4216816A (en) * 1977-11-16 1980-08-12 Thermit Welding GB Limited Aluminothermic welding of austenitic manganese steel
US4302248A (en) * 1978-07-04 1981-11-24 Kobe Steel, Limited High manganese non-magnetic steel with excellent weldability and machinability
US4342593A (en) * 1980-09-15 1982-08-03 Abex Corporation Castings
US4911884A (en) * 1989-01-30 1990-03-27 General Electric Company High strength non-magnetic alloy
US20100272148A1 (en) * 2009-04-23 2010-10-28 Medtronic, Inc. Multiple Use Temperature Monitor Adapter, System and Method of Using Same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD824677S1 (en) * 2015-12-18 2018-08-07 Colgate-Palmolive Company Electric toothbrush

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE507591A (enrdf_load_stackoverflow) *
BE507473A (enrdf_load_stackoverflow) *
BE518985A (enrdf_load_stackoverflow) *
CH318247A (fr) * 1952-08-22 1956-12-31 Hadfields Limited Acier austénitique
US2865740A (en) * 1954-06-23 1958-12-23 United States Steel Corp Precipitation-hardening nonmagneticferrous alloys

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE507591A (enrdf_load_stackoverflow) *
BE507473A (enrdf_load_stackoverflow) *
BE518985A (enrdf_load_stackoverflow) *
CH318247A (fr) * 1952-08-22 1956-12-31 Hadfields Limited Acier austénitique
US2865740A (en) * 1954-06-23 1958-12-23 United States Steel Corp Precipitation-hardening nonmagneticferrous alloys

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4216816A (en) * 1977-11-16 1980-08-12 Thermit Welding GB Limited Aluminothermic welding of austenitic manganese steel
US4302248A (en) * 1978-07-04 1981-11-24 Kobe Steel, Limited High manganese non-magnetic steel with excellent weldability and machinability
US4342593A (en) * 1980-09-15 1982-08-03 Abex Corporation Castings
US4911884A (en) * 1989-01-30 1990-03-27 General Electric Company High strength non-magnetic alloy
US20100272148A1 (en) * 2009-04-23 2010-10-28 Medtronic, Inc. Multiple Use Temperature Monitor Adapter, System and Method of Using Same
US8926175B2 (en) 2009-04-23 2015-01-06 Medtronic, Inc. Multiple use temperature monitor adapter, system and method of using same

Also Published As

Publication number Publication date
GB1060670A (en) 1967-03-08
CH442766A (de) 1967-08-31
SE303145B (enrdf_load_stackoverflow) 1968-08-19

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