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 |
|
|
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
ø 83-140 mm |
343-539 |
245 |
24 |
47 |
0,88 |
215 |
147 |
- |
- |
|
PT-1M
ø
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 |
Titanium
tubes are to be tested by flattening and 100% ultrasonically tested.