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Titanium tubes according to OST1-90050-72

Tubes from titanium alloys

Titanium ubes are cold-rolled and drawn from titanium alloys such as VT1-00, VT1-0, OT4-0, OT4-1, OT-4.

Titanium tubes size range

Alloy grade of titanium tube	External diameter of titanium tube, mm	Wall thickness of titanium tube, mm	Length of titanium tube, m


OT4-0	6-8	1,0	Random 0,5-4,0 Cut-to-length - within the limits of random
	10-16	1,0
	18-22	1,0 - 1,5
	22	2,0
	24-30	1,0 - 2,5
	32-35	1,5 - 3,0
	38-50	1,5 - 4,0
	52-62	2,0 - 4,0
OT4-1, OT4	22 – 30	1,0
	22 – 40	1,5
	25 – 50	2,0
	32 – 62	2,5
	38 - 62	2,5 - 3,0
	42 - 62	3,5
	45 - 62	4,0

Titanium tubes chemical composition

Alloy grade of titanium tube	Standard	Chemical composition of titanium tube, % not more than
Alloy grade of titanium tube	Standard	Ti	Al	Mn	C	Fe	Si	Zr	O	N	H	admixtures


VT1-00	OST 1 9001371	base	-	-	0,05	0,15	0,08	-	0,10	0,04	0,008	0,10
VT1-0		base	-	-	0,07	0,25	0,10	-	0,20	0,04	0,010	0,30
OT4-0		base	0,4-1,4	0,5-1,3	0,10	0,30	0,12	0,30	0,15	0,05	0,012	0,30
OT4-1		base	1,5-2,5	0,7-2,0	0,10	0,30	0,12	0,30	0,15	0,05	0,012	0,30
OT4		base	3,5-5,0	0,8-2,0	0,10	0,30	0,12	0,30	0,15	0,05	0,012	0,30

Titanium tubes mechanical properties

Alloy grade of titanium tube	Temporary tensile strength, MPa	Relative elongation,%


VT1-00	300 - 450	20
VT1-0	400 - 550	15
OT4-0	500 - 650	15
OT4-1	600 - 750	12
OT4	700 - 850	10

Tests

Titanium tubes are examined with flaring test, flattening and hydraulic tests (according to customer's requirement).