JPS57149455A - Low-alloyed steel to be soft-nitrided - Google Patents
Low-alloyed steel to be soft-nitridedInfo
- Publication number
- JPS57149455A JPS57149455A JP3440981A JP3440981A JPS57149455A JP S57149455 A JPS57149455 A JP S57149455A JP 3440981 A JP3440981 A JP 3440981A JP 3440981 A JP3440981 A JP 3440981A JP S57149455 A JPS57149455 A JP S57149455A
- Authority
- JP
- Japan
- Prior art keywords
- soft
- nitrided
- steel
- low
- alloyed steel
- 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
Links
Landscapes
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Abstract
PURPOSE: To enhance the diffusivity of N into a steel during soft-nitriding, to raise surface hardness, to deepen a hardened layer and to offer high toughness, by letting the steel, to be soft-nitrided, contain specified amounts of C, Si, Mn, Cr, Al and Nb.
CONSTITUTION: A steel to be soft-nitrided has the composition of, by wt%, 0.03W0.25 C, 0.1W1 Si, Mn<1.5, 0.1W2.5 Cr, Al<0.08, 0.25W2.5 Nb and the balance being Fe and inevitable impurities. In this case, effective Nb, i.e. Nb%- C%×7.74 is controlled at 0.01W0.5. The steel may further contain Mo<0.3, or one or more of S<0.3, Pb<0.35, Bi<0.1, Te<0.1, Se<0.1 and Ce<0.2.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3440981A JPS57149455A (en) | 1981-03-10 | 1981-03-10 | Low-alloyed steel to be soft-nitrided |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3440981A JPS57149455A (en) | 1981-03-10 | 1981-03-10 | Low-alloyed steel to be soft-nitrided |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57149455A true JPS57149455A (en) | 1982-09-16 |
Family
ID=12413383
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3440981A Pending JPS57149455A (en) | 1981-03-10 | 1981-03-10 | Low-alloyed steel to be soft-nitrided |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57149455A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015175009A (en) * | 2014-03-13 | 2015-10-05 | 新日鐵住金株式会社 | Gas soft nitriding process of low-alloy steel |
-
1981
- 1981-03-10 JP JP3440981A patent/JPS57149455A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015175009A (en) * | 2014-03-13 | 2015-10-05 | 新日鐵住金株式会社 | Gas soft nitriding process of low-alloy steel |
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