Titanium tubes according to TU 14-3-821-79

Seamless hot-finished titanium alloy tubes

          

Titanium tubes are to be produced seamless hot-finished, made of titanium alloys PT-1M, PT-7M, PT-3V.

For titanium tubes manufacturing titanium billet according to TU 1-5-132-78 is used.

 

Titanium tubes size range

External diameter of titanium tubes, mm

Wall thickness of titanium tubes, mm

Length of titanium tubes, m

83,0

6,0-12,0

Random 1,5-7,0

fixed in random length range

 

89,0-95,0

6,0-14,0

102,0

6,0-20,0

108,0

6,0 22,0

114,0

6,0 24,0

121,0-140,0

6,0 25,0

146,0 159,0

7,0 - 22,0

168,0

8,0 23,0

180,0 194,0

8,0 26,0

203,0 219,0

9,0 27,0

245,0 273,0

10,0 30,0

325,0

12,0 30,0

 

Titanium tubes chemical composition

Alloy grade

of titanium tubes

Standard

Chemical composition of titanium tubes, % not more than

Ti

Al

C

Si

Fe

N

O

H

Zr

V

admixtures

PT-1M

OST 1 92077-91

base

0,2-0,7

0,07

0,10

0,20

0,04

0,12

0,005

0,30

-

0,30

PT-7M

GOST 19807-91

base

1,8-2,5

0,10

0,12

0,25

0,04

0,15

0,005

2,0-3,0

-

0,30

PТ-3V

GOST 19807-91

base

3,5-5,0

0,10

0,12

0,25

0,04

0,15

0,006

0,30

1,2-2,5

0,30

Hydrogen content is indicated according to requirements of standard.

 

Titanium tubes mechanical properties

Alloy grade

of titanium tubes

At t 20 C

At t 150 C

At t 350 C

Temporary tensile strength, MPa

Yield strength, MPa

Relative elongation,%

Relative reduction of area, %

Impact strength, J/mm2

Temporary tensile strength, MPa

Yield strength, MPa

Temporary tensile strength, MPa

Yield strength, MPa

not  less than

PT-1M  

83-140 mm

343-539

245

24

47

0,88

215

147

-

-

PT-1M  

146-325 mm

343-539

245

24

45

0,78

215

147

-

-

PT-7M

480-667

372

18

36

0,78

-

-

235

176

PТ-3V

686-863

588

10

30

0,64

-

-

343

294

Tests

Titanium tubes are to be tested by flattening and 100% ultrasonically tested.

 

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