High tensile steel and process for producing the same
US4407681A · kind A · utility
145Cited by
6References
11Claims
0Family size
Assignee
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Key dates
| Filing date | Jun 9, 1982 |
| Grant date | Oct 4, 1983 |
| Priority date | — |
| Expiry date | Jun 9, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C38/10
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A high tensile steel which has a satisfactory yield strength of 60 kg/mm.sup.2 or more and excellent resistances to sulfide corrosive cracking and corrosion, and which comprises, as indispensable components, 0.05 to 0.50 wt % of C, 0.1 to 1.0 wt % of Si, 0.1 to 2.0 wt % of Mn, 0.05 to 1.50 wt % of Co and the balance consisting of Fe, is produced by hot- or cold-rolling it, rapidly heating the rolled steel to austenitize it, quenching the austenitized steel and, finally, tempering the quenched steel at a temperature not higher than the Ac.sub.1 point of the steel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.