High strength, high toughness steel grade and gas cylinder thereof
US5387392A · kind A · utility
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3References
20Claims
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Key dates
| Filing date | Aug 25, 1993 |
| Grant date | Feb 7, 1995 |
| Priority date | — |
| Expiry date | Aug 25, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C38/22
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A high strength, high toughness steel comprising from about 0.32 to about 0.36 percent by weight carbon, from about 0.40 to about 0.60 percent by weight manganese, from about 0.15 to about 0.35 percent by weight silicon, from about 0.80 to about 1.10 percent by weight chromium, from about 0.55 to about 0.70 percent by weight molybdenum, from about 0.01 to about 0.05 percent by weight aluminum, from about 0.002 to about 0.004 calcium, no more than about 0.015 percent by weight phosphorus, no more than about 0.008 percent by weight sulfur, with the balance being iron.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.