SHEAR STRENGTHS ON MATERIALS-ALUMINUM ALLOY-X2020-T6

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Abstract:

Simple shear tests made with 18-inch diameter X2020 wire indicated the following shear strengths occurrences in various wire conditions as received, 25,070 psi annealed 775 F, 1 hour, slow cool to 500 F, 20,060 psi solution heat treated 906 F, water quench, 33,350 psi and solution heat treated and aged 320 F, 12 hours, 54,000 psi. Simple shear tests with solution heat treated and aged rivets revealed 53,500 psi shear strength with rivets aged at 320 F for 24 hours, and 50,400 psi shear strength with rivets aged at 320 F for 12 hours. Lap shear joints made with 0.063- x 1-inch-wide bare 7075-T6 sheet strips, 2 tandem rivets spaced at 12 and with 14 in. edge distance, rivets aged at 320 F for 18 hours and driven with 1.05 - 1.15 diameter protrusion and 1.30 to 1.40 diameter flat heads, developed 45,417 psi and 47,667 psi ultimate shear strengths with universal and countersunk head rivets, respectively. The X2020T6 rivets were harder to drive than 7075-T6 rivets and showed a pronounced tendency to develop fine head cracks. Author

Author(s):
Miller, R. A. ; Steurer, W. H.
Author Organization(s):
GENERAL DYNAMICS/POMONA CALIF
Annotation:
STRENGTH AND DRIVING CHARACTERISTICS OF X2020-T6 ALUMINUM ALLOY RIVETS.
Pagination:
0001

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
8926 058
Contract/Grant Number(s):
AF33 657 8926
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*ALUMINUM ALLOYS, HEAT TREATMENT, MECHANICAL PROPERTIES, RIVETED JOINTS, RIVETS, WIRE
Report Date:
1959 Apr 09