From: The effect of pin profiles on the microstructure and mechanical properties of underwater friction stir welded AA2519-T87 aluminium alloy
0.2 % Yield strength (MPa)
Tensile strength (MPa)
Elongation in 50-mm gauge length (%)
Joint efficiency (%)
Parent metal
427
452
11.2
–
UWFSW-THC
301
327
7.94
72
UWFSW-TTC
322
345
9.17
76
FSW-THC
218
244
9.2
54
FSW-TTC
230
267
9.85
59