JPS57200541A - Forged direct tempering steel excellent in tenacity - Google Patents

Forged direct tempering steel excellent in tenacity

Info

Publication number
JPS57200541A
JPS57200541A JP8501881A JP8501881A JPS57200541A JP S57200541 A JPS57200541 A JP S57200541A JP 8501881 A JP8501881 A JP 8501881A JP 8501881 A JP8501881 A JP 8501881A JP S57200541 A JPS57200541 A JP S57200541A
Authority
JP
Japan
Prior art keywords
tenacity
forged
less
steel excellent
formula
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
JP8501881A
Other languages
Japanese (ja)
Inventor
Shinichi Suzuki
Takeshi Miki
Yutaka Tsuchida
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 JP8501881A priority Critical patent/JPS57200541A/en
Publication of JPS57200541A publication Critical patent/JPS57200541A/en
Pending legal-status Critical Current

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  • Heat Treatment Of Steel (AREA)

Abstract

PURPOSE: To obtain the forged direct tempering steel excellent in tenacity by a method wherein Ti, Zr and Hf are added to steel and solid solution N at a hot forging temp. is specified.
CONSTITUTION: The titled steel contains, on the % basis, 0.3W0.8 C, 0.1W1.0 Si, 0.35W2.5 Mn, 0.01W0.05 Al and one or more of Ti, Zr, Hf in such an amount that the value calculated from formula (Ti%)+0.53(Zr%)+0.27(Hf%) is 0.0075W 0.035% and the value calculated from formula ΔN=(N%)-0.29(Ti%)-0.15 (Zr%)-0.08(Hf%) of the aforementioned solid solution N is 0W0.003%, according to necessity, one or more of 2 or less Cr, 3 or less Ni, 0.5 or less Mo and comprises the remainder Fe and impurities. In this case, ΔN is prescribed to the aforementioned formula based on experimental data and added nitride of each elements are stable even at a hot forging temp. and is one substracting N fixed thereto. The range of added element is also based on experimental data.
COPYRIGHT: (C)1982,JPO&Japio
JP8501881A 1981-06-04 1981-06-04 Forged direct tempering steel excellent in tenacity Pending JPS57200541A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8501881A JPS57200541A (en) 1981-06-04 1981-06-04 Forged direct tempering steel excellent in tenacity

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8501881A JPS57200541A (en) 1981-06-04 1981-06-04 Forged direct tempering steel excellent in tenacity

Publications (1)

Publication Number Publication Date
JPS57200541A true JPS57200541A (en) 1982-12-08

Family

ID=13846988

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8501881A Pending JPS57200541A (en) 1981-06-04 1981-06-04 Forged direct tempering steel excellent in tenacity

Country Status (1)

Country Link
JP (1) JPS57200541A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62196359A (en) * 1986-02-24 1987-08-29 Sumitomo Metal Ind Ltd Non-heattreated steel for hot forging and production thereof
JPS62202054A (en) * 1986-03-03 1987-09-05 Sumitomo Metal Ind Ltd Non-heattreated steel for hot forging

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62196359A (en) * 1986-02-24 1987-08-29 Sumitomo Metal Ind Ltd Non-heattreated steel for hot forging and production thereof
JPS62202054A (en) * 1986-03-03 1987-09-05 Sumitomo Metal Ind Ltd Non-heattreated steel for hot forging

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