JPS6428345A - Alloy steel for very low temperature use - Google Patents

Alloy steel for very low temperature use

Info

Publication number
JPS6428345A
JPS6428345A JP18306287A JP18306287A JPS6428345A JP S6428345 A JPS6428345 A JP S6428345A JP 18306287 A JP18306287 A JP 18306287A JP 18306287 A JP18306287 A JP 18306287A JP S6428345 A JPS6428345 A JP S6428345A
Authority
JP
Japan
Prior art keywords
alloy steel
deterioration
steel
heat treatment
alloy
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
JP18306287A
Other languages
Japanese (ja)
Inventor
Masayoshi Takano
Shinichi Kushida
Shuji Kinoshita
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.)
Kobe Steel Ltd
Original Assignee
Kobe Steel 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 Kobe Steel Ltd filed Critical Kobe Steel Ltd
Priority to JP18306287A priority Critical patent/JPS6428345A/en
Publication of JPS6428345A publication Critical patent/JPS6428345A/en
Pending legal-status Critical Current

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  • Heat Treatment Of Steel (AREA)

Abstract

PURPOSE:To manufacture a steel free from deterioration in toughness due to temper brittleness while obviating the necessity of particular heat treatment, by providing a specific composition in which Si and Mn contents are reduced and deterioration in hardenability due to the above reduction or increase in thickness is compensated by the addition of other alloy components. CONSTITUTION:This alloy steel has a composition consisting of, by weight, 0.02-0.15% C, <=0.10% Si, <0.10% Mn, 7.0-11.0% Ni, 0.20-2.0% Cr, 0.1-0.5% Mo, 0.01-0.035% Al, and the balance Fe and containing, if necessary, 0.1-0.5% Cu or 0.01-0.06% V and is composed of martensitic and lower bainite structures. This alloy steel is capable of reducing tempered brittleness sensitivity even if cooling at the time of tempering or heat treatment after welding is applied by means of slow cooling, and accordingly, this alloy steel can maintain high toughness even when applied to a thick-walled part or a large-sized structural member. Further, this alloy steel can be manufactured without requiring particular manufacturing stages, such as direct hardening after hot rolling.
JP18306287A 1987-07-22 1987-07-22 Alloy steel for very low temperature use Pending JPS6428345A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18306287A JPS6428345A (en) 1987-07-22 1987-07-22 Alloy steel for very low temperature use

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18306287A JPS6428345A (en) 1987-07-22 1987-07-22 Alloy steel for very low temperature use

Publications (1)

Publication Number Publication Date
JPS6428345A true JPS6428345A (en) 1989-01-30

Family

ID=16129077

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18306287A Pending JPS6428345A (en) 1987-07-22 1987-07-22 Alloy steel for very low temperature use

Country Status (1)

Country Link
JP (1) JPS6428345A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5709807A (en) * 1991-09-05 1998-01-20 Nkk Corporation Flow rate adjusting for rotary nozzle type molten metal pouring unit
GB2569292B (en) * 2017-12-08 2020-07-29 Ford Global Tech Llc Vehicle storage compartment with selective access from the exterior and the interior of the vehicle
GB2559191B (en) * 2017-01-31 2021-07-28 Campers Scotland Ltd Vehicle system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5709807A (en) * 1991-09-05 1998-01-20 Nkk Corporation Flow rate adjusting for rotary nozzle type molten metal pouring unit
GB2559191B (en) * 2017-01-31 2021-07-28 Campers Scotland Ltd Vehicle system
GB2569292B (en) * 2017-12-08 2020-07-29 Ford Global Tech Llc Vehicle storage compartment with selective access from the exterior and the interior of the vehicle

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