PROPERTIES OF RESISTANCE SPOTWELDED 24S-T3 AND 75S-T6 ALUMINUM ALLOY SHEET AND 17-7PH STAINLESS STEEL SHEET AT DEPRESSED AND ELEVATED TEMPERATURES

Technical Report · Mon Feb 01 04:00:00 EST 1954

OSTI ID:4324757

Pelochino, E J; Bellah, J R

Resign properties and test results at room, elevated, and depressed temperatures of resistance spotwelded joints are presented. The major portion of the program was devoted to testing clad 24S-T3 and 75S-T6 aluminum alloy sheet and 17-7PH stainless steel sheet in two conditions, THD (hardened and aged) and SA (stretched and aged). Bare 24S-T3, 75S-T6, and clad 61S-T6 aluminum alloy sheet was also tested but for a limited number of gage combinations and temperatures. The results include spotweld shear, tensile, and combined shear and tensile strengths for various temperatures, exposure times, and sheet thicknesses. The shear tests consisted of both equal and unequal gage two sheet joint combinations, plus various multiple sheet combinations up tip a four sheet maximum buildup. Tests were also conducted to determine the reduction in parent metal strength in tension for spotwelds at various spacings. All test values are reduced to design values which will afford safe and efficient allowables. (auth)

• Research Organization: North American Aviation, Inc., Downey, Calif.
• NSA Number: NSA-12-002339
• OSTI ID: 4324757
• Report Number(s): NAA-AL-1840; W33-038-ac-14191; Project MX-770
• Country of Publication: United States
• Language: English

Related Subjects

ALUMINUM ALLOYS
ALUMINUM BASE ALLOY
GASES
HEAT TREATMENTS
HIGH TEMPERATURE
JOINTS
MATERIALS TESTING
MINERALOGY, METALLURGY, AND CERAMICS
PLANNING
QUANTITATIVE ANALYSIS
SHEAR
SHEETS
SPOT-WELDING
STAINLESS STEELS
TEMPERATURE
TEMPERING
TENSILE PROPERTIES
THICKNESS
VARIATIONS
WELDING
WELDS