Mechanical and Formability Evaluation of ST14 Alloys Welded by Friction Stir Welding

Table 4

Five sets of samples selected.

Test number	Classification of tests	The speed of the era	Linear motion speed (mm/min)	Pin diameter (mm)	Shoulder diameter (mm)	Ultimate strength (MPa)
1	A	500	31.5	3.9	14.2	132
6	B	600	50	3.9	14.2	190
10	C	800	50	3.9	14.2	298
14	D	1000	100	3.9	14.2	294
18	E	1200	100	3.9	14.2	265