Evaluation and Handbook Data of 7050 Rivets. Volume 1
Abstract
The aluminum alloy 7050 wire has been represented by Alcoa as a high strength, easily upsetable and corrosion compatible rivet material. Rivets made from this alloy and heat treated to the overaged T73 temper, indicate a high shear strength. Fsu = 43 Ksi (driven condition). The rivets were also found to be corrosion compatible and with no stress corrosion failure in the alloy wire when subjected to a stress equal to 75% of yield strength (Fty = 63 Ksi) for 30 days in salt solution. The joint fatigue data compared favorably with that of 2024-T31DD (ice box) rivet in both low load and medium load transfer configuration tests. The shear strength of 7050-T73 rivet was also compared to the 2219-T81 rivet at elevated temperatures 250 and 350 deg F and 16, 96, 288 hour soak. It was determined that the 7050 rivet can replace the 2219 rivet in the temperature environment. The maximum reduction of room temperature strength was realized at the 350 deg F and 288 hour soak test conditions. This reduction was 42% for 7050-T73 rivet as compared 34% for 2219-T81 rivet.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1981
- Accession Number
- ADA113380
Entities
People
- Eddie J. Bateh