JPS57134543A - Low alloy carburizing steel with high toughness - Google Patents
Low alloy carburizing steel with high toughnessInfo
- Publication number
- JPS57134543A JPS57134543A JP1845281A JP1845281A JPS57134543A JP S57134543 A JPS57134543 A JP S57134543A JP 1845281 A JP1845281 A JP 1845281A JP 1845281 A JP1845281 A JP 1845281A JP S57134543 A JPS57134543 A JP S57134543A
- Authority
- JP
- Japan
- Prior art keywords
- steel
- carburizing steel
- toughness
- high toughness
- low 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
Links
Abstract
PURPOSE: To make the resulting carburizing steel inexpensive and to enhance the haudenability and the toughness after heat tratment by adjusting the Si and P contents of a steel contg. Mn, Cr and Ti, adding B, and regulating the ideal critical diameter to a specified range.
CONSTITUTION: This carburizing steel consists of, by weight, ≤0.35% C, ≤0.25% Si, 0.30W1.20% Mn, 0.61W2.0% Cr, ≤0.020% P, ≤O.O15% S, ≤200ppm N+O, ≤0.10 % sol. Al, 4W10 times as much Ti as (N+O)%, 0.0005W0.009% B and the balance Fe with inevitable impurities. The amounts (%) of C, Si, Mn and Cr in the steel are regulated so that the ideal critical diameter DI according to equation I is made 1.0W8.0 in. By further adding ≤200ppm Ca to the steel as required, the amount of A1 type inclusions in a hot rolled plate is reduced to 0.03% by area, the anisotropy is reduced, and the toughness can be improved furthermore.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1845281A JPS57134543A (en) | 1981-02-10 | 1981-02-10 | Low alloy carburizing steel with high toughness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1845281A JPS57134543A (en) | 1981-02-10 | 1981-02-10 | Low alloy carburizing steel with high toughness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57134543A true JPS57134543A (en) | 1982-08-19 |
Family
ID=11972014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1845281A Pending JPS57134543A (en) | 1981-02-10 | 1981-02-10 | Low alloy carburizing steel with high toughness |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57134543A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58164758A (en) * | 1982-03-25 | 1983-09-29 | Daido Steel Co Ltd | Carburizing steel |
| JPS61204352A (en) * | 1985-03-07 | 1986-09-10 | Nippon Steel Corp | High strength nontemper steel material as warm forged |
| JPS61204353A (en) * | 1985-03-07 | 1986-09-10 | Nippon Steel Corp | Steel material having superior strength and toughness in as warm forged state |
-
1981
- 1981-02-10 JP JP1845281A patent/JPS57134543A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58164758A (en) * | 1982-03-25 | 1983-09-29 | Daido Steel Co Ltd | Carburizing steel |
| JPH0416538B2 (en) * | 1982-03-25 | 1992-03-24 | Daido Steel Co Ltd | |
| JPS61204352A (en) * | 1985-03-07 | 1986-09-10 | Nippon Steel Corp | High strength nontemper steel material as warm forged |
| JPS61204353A (en) * | 1985-03-07 | 1986-09-10 | Nippon Steel Corp | Steel material having superior strength and toughness in as warm forged state |
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