Al-base alloy hollow bodies under pressure
US4747890A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 24, 1986 |
| Grant date | May 31, 1988 |
| Priority date | — |
| Expiry date | Sep 24, 2006 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF17C2260/017
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention relates to hollow bodies for gas under pressure manufactured from an aluminum alloy containing Zn, Cu and Mg as principal alloying elements and intended in particular for the production of metal bottles for pressurized gas. The hollow bodies are manufactured from an alloy consisting essentially of (in % by weight): ______________________________________ 6.25 .ltoreq. Zn .ltoreq. 8.0 Mn .ltoreq. 0.20 1.2 .ltoreq. Mg .ltoreq. 1.95 Zr .ltoreq. 0.05 1.7 .ltoreq. Cu .ltoreq. 2.8 Ti .ltoreq. 0.05 0.15 .ltoreq. Cr .ltoreq. 0.28 Others each .ltoreq.0.05 Fe .ltoreq. 0.20 Others total .ltoreq.0.15 Si + Fe .ltoreq. 0.40 Balance Al. ______________________________________ The alloy in state T73 complies with the very severe technical requirements in respect of strength and ductility which are imposed in relation to use for hollow bodies under pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.