IT1250732B - Non-refined high toughness steels and method for their manufacture - Google Patents
Non-refined high toughness steels and method for their manufactureInfo
- Publication number
- IT1250732B IT1250732B ITMI912144A ITMI912144A IT1250732B IT 1250732 B IT1250732 B IT 1250732B IT MI912144 A ITMI912144 A IT MI912144A IT MI912144 A ITMI912144 A IT MI912144A IT 1250732 B IT1250732 B IT 1250732B
- Authority
- IT
- Italy
- Prior art keywords
- manufacture
- high toughness
- steel
- refined high
- steels
- Prior art date
Links
Landscapes
- Treatment Of Steel In Its Molten State (AREA)
Abstract
A non-refined high toughness steel comprising from 0.30% to 0.55% of C, 0.15% to 0.45% of Si, 0.60% to 1.55% of Mn, not more than 0.050% of S, from 0% to 0.30% of Cr, from 0.01% to 0.05% of Al, from 0.05% to 0.15% of V, Nb or their mixtures, 0.0% to 0.03% of Ti, 0.0% to 0.003% of B, 0.2923 of Ti, up to 0.02% of N and the remainder of Fe, and impurities inevitably introduced in the manufacture of the steel, is described. The steel also contains at least one element selected from the group comprising calcium, tellurium, cerium and other rare earth metals, "miech metal", and their mixtures in quantities between 0.0001% by weight and 0.04% by weight. These elements act in such a way as to control the shape of the inclusions. The steels have a tensile strength of 75 Kgf/mm<2> and a toughness of 7 Kgf.m/cm<2>. <IMAGE>
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019900011944A KR930003643B1 (en) | 1990-08-03 | 1990-08-03 | High toughness non-coated steel with controlled inclusion shape |
| KR1019910002924A KR930002742B1 (en) | 1991-02-22 | 1991-02-22 | Non-quenched & tempered steel and its method for making |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| ITMI912144A0 ITMI912144A0 (en) | 1991-07-31 |
| ITMI912144A1 ITMI912144A1 (en) | 1992-02-04 |
| IT1250732B true IT1250732B (en) | 1995-04-21 |
Family
ID=26628314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ITMI912144A IT1250732B (en) | 1990-08-03 | 1991-07-31 | Non-refined high toughness steels and method for their manufacture |
Country Status (1)
| Country | Link |
|---|---|
| IT (1) | IT1250732B (en) |
-
1991
- 1991-07-31 IT ITMI912144A patent/IT1250732B/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| ITMI912144A1 (en) | 1992-02-04 |
| ITMI912144A0 (en) | 1991-07-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 0001 | Granted | ||
| TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19970730 |