JPS54110123A - Manufacture of nonmagnetic steel with superior yield strength and weldability - Google Patents

Manufacture of nonmagnetic steel with superior yield strength and weldability

Info

Publication number
JPS54110123A
JPS54110123A JP1746778A JP1746778A JPS54110123A JP S54110123 A JPS54110123 A JP S54110123A JP 1746778 A JP1746778 A JP 1746778A JP 1746778 A JP1746778 A JP 1746778A JP S54110123 A JPS54110123 A JP S54110123A
Authority
JP
Japan
Prior art keywords
steel
cooling rate
yield strength
nonmagnetic steel
superior
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.)
Granted
Application number
JP1746778A
Other languages
Japanese (ja)
Other versions
JPS5635730B2 (en
Inventor
Yasuo Otani
Yasutaka Okada
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.)
Nippon Steel Corp
Original Assignee
Sumitomo Metal Industries Ltd
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 Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP1746778A priority Critical patent/JPS54110123A/en
Publication of JPS54110123A publication Critical patent/JPS54110123A/en
Publication of JPS5635730B2 publication Critical patent/JPS5635730B2/ja
Granted legal-status Critical Current

Links

Classifications

    • 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous alloys

Landscapes

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

Abstract

PURPOSE:To obtain a nonmagnetic steel with very low permeability, superior yield strength and superior machinability by combining regulation of the components of raw steel with specific heat treatment after hot working to form stable austnite structure. CONSTITUTION:An alloy steel contg. C; 0.25-0.40%, Si<0.60%, Mn<2.0%, Ni; 5-10%, Cr; 10-18%, N; 0.07-0.25% and sol. Al<0.10% or further contg. one or more out of V; 0.10-1.0%, Nb; 0.2-0.5% and Ti; 0.10-0.60%. An ingot of this steel is worked by hot forging, etc. and quenched at a cooling rate above air-cooling rate to prevent precipitation of carbide on the austenite grain boundaries. Next the ingot is soln. heat treated at 1050-1200 deg.C for 30 min-10 hr and cooled at a cooling rate above air-cooling rate to prevent coarsening of the austenite grains, followed by aging at 850-1000 deg.C for 30 min-20 hr. The aging may be carried out after the hot forging. Thus, a nonmagnetic steel is obtd. having a yield stress of 42 kg/mm<2> and a permeability below 1.02.
JP1746778A 1978-02-16 1978-02-16 Manufacture of nonmagnetic steel with superior yield strength and weldability Granted JPS54110123A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1746778A JPS54110123A (en) 1978-02-16 1978-02-16 Manufacture of nonmagnetic steel with superior yield strength and weldability

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1746778A JPS54110123A (en) 1978-02-16 1978-02-16 Manufacture of nonmagnetic steel with superior yield strength and weldability

Publications (2)

Publication Number Publication Date
JPS54110123A true JPS54110123A (en) 1979-08-29
JPS5635730B2 JPS5635730B2 (en) 1981-08-19

Family

ID=11944813

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1746778A Granted JPS54110123A (en) 1978-02-16 1978-02-16 Manufacture of nonmagnetic steel with superior yield strength and weldability

Country Status (1)

Country Link
JP (1) JPS54110123A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05215619A (en) * 1992-02-03 1993-08-24 Nissan Motor Co Ltd Torque detector
JP2006022510A (en) * 2004-07-06 2006-01-26 Okabe Co Ltd Anchor bolt anchoring device for column base, using sheath pipes

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58122337U (en) * 1982-02-15 1983-08-20 日新電機株式会社 Electric power gas tank and disconnector container

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05215619A (en) * 1992-02-03 1993-08-24 Nissan Motor Co Ltd Torque detector
JP2006022510A (en) * 2004-07-06 2006-01-26 Okabe Co Ltd Anchor bolt anchoring device for column base, using sheath pipes

Also Published As

Publication number Publication date
JPS5635730B2 (en) 1981-08-19

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