Process for the manufacture of hollow bodies made of aluminum al

Details Process for the manufacture of hollow bodies made of aluminum al Process for the manufacture of hollow bodies made of aluminum al

1980-05-30

1982-08-24

Dean, R.

Metal treatment

Compositions

Heat treating

75141, 148 127A, 148 325, C22F 104

Patent

active

043459510

ABSTRACT:
The invention relates to a process for obtaining hollow bodies made of aluminum alloy having a high bursting strength, and to the products thus obtained. The alloy contains (by weight): from 7.6 to 9.5% of Zn from 1 to 1.8% of Cu; from 2.4 to 3.5% of Mg; from 0.07 to 0.17% of Cr; from 0.15 to 0.25% of Mn; from 0.08 to 0.14% of Zr; less than 0.2% of Fe, 0.15% of Si; 0.10% of Ti; and optionally less than 0.01% of V. It has a tensile stress (lengthwise direction) and a bursting strength (transverse direction) greater than or equal to 660 MPa. Its structure is characterized by the absence of large intermetallic compounds (>35 .mu.m) after a specific solidification test. It can be used in all the safety applications involving a container under pressure (bottles of compressed gas, etc.).

REFERENCES:
patent: 4305763 (1981-12-01), Quist et al.

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