JPS5741321A - Manufacture of low alloy steel with superior sulfide stress corrosion cracking resistance - Google Patents

Manufacture of low alloy steel with superior sulfide stress corrosion cracking resistance

Info

Publication number
JPS5741321A
JPS5741321A JP11657380A JP11657380A JPS5741321A JP S5741321 A JPS5741321 A JP S5741321A JP 11657380 A JP11657380 A JP 11657380A JP 11657380 A JP11657380 A JP 11657380A JP S5741321 A JPS5741321 A JP S5741321A
Authority
JP
Japan
Prior art keywords
low alloy
alloy steel
manufacture
cracking resistance
stress corrosion
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.)
Pending
Application number
JP11657380A
Other languages
Japanese (ja)
Inventor
Hirobumi Morikawa
Koichi Yamamoto
Tomoyoshi Murata
Eiji Sato
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
Nippon Steel Corp
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 Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP11657380A priority Critical patent/JPS5741321A/en
Publication of JPS5741321A publication Critical patent/JPS5741321A/en
Pending 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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/02—Hardening by precipitation

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 manufacture a low alloy steel with superior sulfide stress corrosion cracking resistance by hardening a low alloy steel contg. a specified percentage of C, Si, Mn, Al, P, etc. followed by tempering under specified conditions. CONSTITUTION:A low alloy steel contg., by wt., 0.05-0.35% C, 0.01-0.03% Si, 0.15-1.5% Mn and 0.005-0.1% Al as principal components and further contg. <=0.1% Mo and 0.03-0.15% V is prepared. The P, Si and La contents of the steel are adjusted so as to satisfy equation (Si+0.05)[P-1/4.5La]<=0.00375 in case of >=700 deg.C tempering temp. and equation (Si+0.05)[P-1/4.5La]<=0.00075 in case of 650-<700 deg.C tempering temp. The alloy is hardened and tempered at 650 deg.C- the Ac1 point in a short time such as <=300sec.
JP11657380A 1980-08-25 1980-08-25 Manufacture of low alloy steel with superior sulfide stress corrosion cracking resistance Pending JPS5741321A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11657380A JPS5741321A (en) 1980-08-25 1980-08-25 Manufacture of low alloy steel with superior sulfide stress corrosion cracking resistance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11657380A JPS5741321A (en) 1980-08-25 1980-08-25 Manufacture of low alloy steel with superior sulfide stress corrosion cracking resistance

Publications (1)

Publication Number Publication Date
JPS5741321A true JPS5741321A (en) 1982-03-08

Family

ID=14690449

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11657380A Pending JPS5741321A (en) 1980-08-25 1980-08-25 Manufacture of low alloy steel with superior sulfide stress corrosion cracking resistance

Country Status (1)

Country Link
JP (1) JPS5741321A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5719323A (en) * 1980-07-08 1982-02-01 Nippon Steel Corp Production of steel of superior sulfide stress corrosion cracking resistance

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5719323A (en) * 1980-07-08 1982-02-01 Nippon Steel Corp Production of steel of superior sulfide stress corrosion cracking resistance

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