JPS54102223A - Manufacture of ultra low carbon, fine grain, high tensile steel with superior hydrogen induced cracking resistance - Google Patents
Manufacture of ultra low carbon, fine grain, high tensile steel with superior hydrogen induced cracking resistanceInfo
- Publication number
- JPS54102223A JPS54102223A JP971778A JP971778A JPS54102223A JP S54102223 A JPS54102223 A JP S54102223A JP 971778 A JP971778 A JP 971778A JP 971778 A JP971778 A JP 971778A JP S54102223 A JPS54102223 A JP S54102223A
- Authority
- JP
- Japan
- Prior art keywords
- induced cracking
- hydrogen induced
- cracking resistance
- steel
- high tensile
- 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 manufacture a high tensile steel with superior strength, toughness and hydrogen induced cracking resistance by reducing the C content of steel to enhance the hydrogen induced cracking resistance; adding Mn to offset a lowering in strength; and carrying out specific heat treatment to lower the hydrogen induced cracking sensibility.
CONSTITUTION: An ultra low carbon steel contg. C; 0.001W0.01%, Si<0.5%, Mn; 2W4%, sol. Al<0.10%, Ca; 0.0005W0.01% and/or Ce; 0.0005W0.02% and impurity S<0.002%. The steel may further contain one or more out if Cu; 0.2W0.5%, Cr; 0.1W1.0%, Ni; 0.05W0.60%, Mo; 0.05W0.50%, Nb; 0.01W0.10% and V; 0.02W0.10%. This steel is heated at the Ac3 pointW1150°C to be austenitized, and then it is hot rolled at a reduction ratio above 60% at below 850°C to make the grains fine. Tempering temp. is regulated to 550°Wthe Ac1 point, thus obtaining a high tensile steel with superior hydrogen induced cracking resistance.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP971778A JPS54102223A (en) | 1978-01-30 | 1978-01-30 | Manufacture of ultra low carbon, fine grain, high tensile steel with superior hydrogen induced cracking resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP971778A JPS54102223A (en) | 1978-01-30 | 1978-01-30 | Manufacture of ultra low carbon, fine grain, high tensile steel with superior hydrogen induced cracking resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS54102223A true JPS54102223A (en) | 1979-08-11 |
Family
ID=11728019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP971778A Pending JPS54102223A (en) | 1978-01-30 | 1978-01-30 | Manufacture of ultra low carbon, fine grain, high tensile steel with superior hydrogen induced cracking resistance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54102223A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58120726A (en) * | 1982-01-13 | 1983-07-18 | Nippon Kokan Kk <Nkk> | Manufacture of nontemper steel superior in sulfide corrosion crack resistance |
| US9573432B2 (en) | 2013-10-01 | 2017-02-21 | Hendrickson Usa, L.L.C. | Leaf spring and method of manufacture thereof having sections with different levels of through hardness |
-
1978
- 1978-01-30 JP JP971778A patent/JPS54102223A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58120726A (en) * | 1982-01-13 | 1983-07-18 | Nippon Kokan Kk <Nkk> | Manufacture of nontemper steel superior in sulfide corrosion crack resistance |
| JPH0319285B2 (en) * | 1982-01-13 | 1991-03-14 | Nippon Kokan Kk | |
| US9573432B2 (en) | 2013-10-01 | 2017-02-21 | Hendrickson Usa, L.L.C. | Leaf spring and method of manufacture thereof having sections with different levels of through hardness |
| US9890440B2 (en) | 2013-10-01 | 2018-02-13 | Hendrickson Usa, L.L.C. | Leaf spring and method of manufacture thereof having sections with different levels of through hardness |
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