Study on Dynamic Behavior of a Titanium Alloy Drill Pipe in Complex Wells

Table 1

Test results of tensile mechanical properties of the tube body.

Numbers	Yield strength	Mean value	Tensile strength	Mean value	Yield ratio	Mean value	Elongation at break	Mean value
	Rp0.2  (MPa)		σb(MPa)		Rp0.2/σb		∆ (%)
1	860.53	882.96	938.55	955.94	0.92	0.927	12.58	13.37
2	891.33		963.56		0.93		13.90
3	897.01		965.72		0.93		13.62