JPS56127750A - Structural high tensile steel with reduced stress aging brittleness - Google Patents

Structural high tensile steel with reduced stress aging brittleness

Info

Publication number
JPS56127750A
JPS56127750A JP2992480A JP2992480A JPS56127750A JP S56127750 A JPS56127750 A JP S56127750A JP 2992480 A JP2992480 A JP 2992480A JP 2992480 A JP2992480 A JP 2992480A JP S56127750 A JPS56127750 A JP S56127750A
Authority
JP
Japan
Prior art keywords
high tensile
tensile steel
steel
stress aging
reduced stress
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
JP2992480A
Other languages
Japanese (ja)
Other versions
JPS6250548B2 (en
Inventor
Takahide Ono
Seinosuke Yano
Yoshihiro Okamura
Koichi Uchino
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 JP2992480A priority Critical patent/JPS56127750A/en
Publication of JPS56127750A publication Critical patent/JPS56127750A/en
Publication of JPS6250548B2 publication Critical patent/JPS6250548B2/ja
Granted legal-status Critical Current

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  • Heat Treatment Of Steel (AREA)

Abstract

PURPOSE: To provide the titled structural high tensile steel almost free from the lowering of impact absorbing energy even after stress aging, that is, capable of preventing toughness deterioration due to the stress aging obtained by adding one or more of Ca, Mg to a steel added with V and N.
CONSTITUTION: The above described high tensile steel is constituted from 0.12W 0.25% C, 0.05W1.0% Si, 0.5W2.0% Mn, 0.025% or less P, 0.01% or less S, 0.006W0.06% Al, 0.03W0.20% V, 0.010W0.03% N and 0.0005W0.0070% Ca or/and 0.0005W0.0070% Mg and the remainder of Fe. Because said steel contains a large amount of V and N, the reinforcing action due to V N precipitation is sufficiently developed, for example, if a cooling speed after hot rolling is slow. Therefore, the thick high tensile steel material can be produced from said steel.
COPYRIGHT: (C)1981,JPO&Japio
JP2992480A 1980-03-10 1980-03-10 Structural high tensile steel with reduced stress aging brittleness Granted JPS56127750A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2992480A JPS56127750A (en) 1980-03-10 1980-03-10 Structural high tensile steel with reduced stress aging brittleness

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2992480A JPS56127750A (en) 1980-03-10 1980-03-10 Structural high tensile steel with reduced stress aging brittleness

Publications (2)

Publication Number Publication Date
JPS56127750A true JPS56127750A (en) 1981-10-06
JPS6250548B2 JPS6250548B2 (en) 1987-10-26

Family

ID=12289534

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2992480A Granted JPS56127750A (en) 1980-03-10 1980-03-10 Structural high tensile steel with reduced stress aging brittleness

Country Status (1)

Country Link
JP (1) JPS56127750A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW541342B (en) 2000-04-04 2003-07-11 Nippon Steel Corp Hot rolled h-shap steel having an uniform microstruture and mechanical properties

Also Published As

Publication number Publication date
JPS6250548B2 (en) 1987-10-26

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