JPS55148746A - Low temperature steel with superior brittle rupture resistant characteristic and brittle crack stopping characteristic - Google Patents

Low temperature steel with superior brittle rupture resistant characteristic and brittle crack stopping characteristic

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Publication number
JPS55148746A
JPS55148746A JP5656979A JP5656979A JPS55148746A JP S55148746 A JPS55148746 A JP S55148746A JP 5656979 A JP5656979 A JP 5656979A JP 5656979 A JP5656979 A JP 5656979A JP S55148746 A JPS55148746 A JP S55148746A
Authority
JP
Japan
Prior art keywords
brittle
characteristic
steel
low temperature
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.)
Pending
Application number
JP5656979A
Other languages
Japanese (ja)
Inventor
Yasuo Sogo
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 JP5656979A priority Critical patent/JPS55148746A/en
Publication of JPS55148746A publication Critical patent/JPS55148746A/en
Pending legal-status Critical Current

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  • Heat Treatment Of Steel (AREA)

Abstract

PURPOSE: To provide a steel having both brittle rupture resistant characteristics and brittle crack stopping characteristics for a low temp. liquefied gas storage container by rolling a low carbon steel contg. a small amount each of P, S and N and having carbon equivalent adjusted to a specified value in a specified temp. range.
CONSTITUTION: This low carbon steel contains C 0.04W0.12%, Mn 0.6W1.30%, P<0.015%, S<0.008%, N 0.0010W0.0050%, Ti 0.007W0.015% and one or more among Si, Ni, Cr and Cu so that carbon equivalent represented by (C+Si/24+Mn/ 6+Ni/40+Cr/5+Cu/13) is adjusted to 0.25W0.35. This steel is heated to 950W 1200°C to prevent austenite grains from coarsening followed by rolling at Ar3W Ar3+100°C and a total reduction ratio of 30W60% and at Ar3WAr1 and a total reduction ratio of 50W80%. Thus, a steel suitable for storage of low temp. liquefied gas such as LPG is obtd.
COPYRIGHT: (C)1980,JPO&Japio
JP5656979A 1979-05-09 1979-05-09 Low temperature steel with superior brittle rupture resistant characteristic and brittle crack stopping characteristic Pending JPS55148746A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5656979A JPS55148746A (en) 1979-05-09 1979-05-09 Low temperature steel with superior brittle rupture resistant characteristic and brittle crack stopping characteristic

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5656979A JPS55148746A (en) 1979-05-09 1979-05-09 Low temperature steel with superior brittle rupture resistant characteristic and brittle crack stopping characteristic

Publications (1)

Publication Number Publication Date
JPS55148746A true JPS55148746A (en) 1980-11-19

Family

ID=13030766

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5656979A Pending JPS55148746A (en) 1979-05-09 1979-05-09 Low temperature steel with superior brittle rupture resistant characteristic and brittle crack stopping characteristic

Country Status (1)

Country Link
JP (1) JPS55148746A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61238940A (en) * 1985-04-12 1986-10-24 Nippon Steel Corp Low-temperature tough hardening steel excelling in toughness in weld zone
JPS621842A (en) * 1985-06-26 1987-01-07 Nippon Steel Corp Tough, high tension steel having superior toughness in weld zone

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61238940A (en) * 1985-04-12 1986-10-24 Nippon Steel Corp Low-temperature tough hardening steel excelling in toughness in weld zone
JPH0359134B2 (en) * 1985-04-12 1991-09-09 Nippon Steel Corp
JPS621842A (en) * 1985-06-26 1987-01-07 Nippon Steel Corp Tough, high tension steel having superior toughness in weld zone

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