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JPS57126957A - High strength and high toughness case hardening steel - Google Patents

High strength and high toughness case hardening steel

Info

Publication number
JPS57126957A
JPS57126957A JP1074781A JP1074781A JPS57126957A JP S57126957 A JPS57126957 A JP S57126957A JP 1074781 A JP1074781 A JP 1074781A JP 1074781 A JP1074781 A JP 1074781A JP S57126957 A JPS57126957 A JP S57126957A
Authority
JP
Japan
Prior art keywords
case hardening
hardening steel
steel
strength
high strength
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
JP1074781A
Other languages
Japanese (ja)
Other versions
JPH0135909B2 (en
Inventor
Susumu Sawada
Takeo Ohashi
Yutaka Murakami
Hideyuki Kawamoto
Michihiro Ito
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.)
NAKAMURA JIKOU KK
Japan Steel Works Ltd
Original Assignee
NAKAMURA JIKOU KK
Japan Steel Works 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 NAKAMURA JIKOU KK, Japan Steel Works Ltd filed Critical NAKAMURA JIKOU KK
Priority to JP1074781A priority Critical patent/JPS57126957A/en
Publication of JPS57126957A publication Critical patent/JPS57126957A/en
Publication of JPH0135909B2 publication Critical patent/JPH0135909B2/ja
Granted legal-status Critical Current

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Abstract

PURPOSE: To provide the case hardening steel which has generally required surface carburization hardness and of which the inner part has both high strength and high toughness comprising containing C, Si, Mn, Cr, Mo and V in a predetermined ratio respectively.
CONSTITUTION: The titled case hardening steel comprises, on the wt% basis, 0.15W0.25% C, 0.50% or less Si, 0.20W1.00% Mn, 3.00W4.00% Ni 1.00W2.00% Cr, 0.20W0.50% Mo, 0.05W0.30% V and the remainder of Fe and inevitable impurities. This case hardening steel has surface hardness equal to that of a conventional one as well as, compared to the conventional one, has equal or more strength and remarkably excellent break toughness. As the result, said case hardening with stands safe use for a long time as well as, when compared to the use of the conventional steel, dimensional reduction is enabled.
COPYRIGHT: (C)1982,JPO&Japio
JP1074781A 1981-01-29 1981-01-29 High strength and high toughness case hardening steel Granted JPS57126957A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1074781A JPS57126957A (en) 1981-01-29 1981-01-29 High strength and high toughness case hardening steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1074781A JPS57126957A (en) 1981-01-29 1981-01-29 High strength and high toughness case hardening steel

Publications (2)

Publication Number Publication Date
JPS57126957A true JPS57126957A (en) 1982-08-06
JPH0135909B2 JPH0135909B2 (en) 1989-07-27

Family

ID=11758894

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1074781A Granted JPS57126957A (en) 1981-01-29 1981-01-29 High strength and high toughness case hardening steel

Country Status (1)

Country Link
JP (1) JPS57126957A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6070166A (en) * 1983-09-26 1985-04-20 Hitachi Ltd Creep and oxidation resistant low-alloy steel
JPH02243737A (en) * 1989-03-16 1990-09-27 Aichi Steel Works Ltd Heat resistant case hardening steel having excellent pitching resistance
WO2020073576A1 (en) * 2018-10-09 2020-04-16 江阴兴澄特种钢铁有限公司 Steel for wind turbine main shaft bearing and production method therefor

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS501340A (en) * 1973-04-09 1975-01-08
JPS501339A (en) * 1973-04-10 1975-01-08

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS501340A (en) * 1973-04-09 1975-01-08
JPS501339A (en) * 1973-04-10 1975-01-08

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6070166A (en) * 1983-09-26 1985-04-20 Hitachi Ltd Creep and oxidation resistant low-alloy steel
JPH021901B2 (en) * 1983-09-26 1990-01-16 Hitachi Ltd
JPH02243737A (en) * 1989-03-16 1990-09-27 Aichi Steel Works Ltd Heat resistant case hardening steel having excellent pitching resistance
WO2020073576A1 (en) * 2018-10-09 2020-04-16 江阴兴澄特种钢铁有限公司 Steel for wind turbine main shaft bearing and production method therefor

Also Published As

Publication number Publication date
JPH0135909B2 (en) 1989-07-27

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