GOST 9940-81. Seamless Hot-Finished Tubes of Corrosion Resistant Steel
Outside Diameter: 76 - 159 mm (76; 83; 89; 95; 102; 108; 114; 121; 127; 133; 140; 146; 152; 159)
Wall Thickness: 5 - 26 mm (5; 5,5; 6; 6,5; 7; 7,5; 8; 8,5; 9; 9,5; 10; 11; 12; 13; 14; 15; 16; 17; 18; 19; 20; 21; 22; 23; 24; 25; 26)
Tolerances:
OD:
Ordinary accuracy ± 1,5%
High accuracy ± 1%
Wall Thickness:
WT 5 - 8 mm: ordinary acc. +20% -15%; high acc. +12,5% - 15%
WT 8,5 - 20 mm: ordinary acc. ± 15%; high acc. +12,5% - 15%
WT 21 - 26mm: ordinary acc. +12,5% -15%; high acc. ± 12,5%
Notes:
- Steel grades: 08Cr13, 08Cr17,12Cr13, 12Cr17, 15Cr28, 15Cr25Ti, 04Cr18Ni10, 10Cr23Ni18, 08Cr17Ni15Mo3Ti, 08Cr18Ni10, 08Cr18Ni10Ti, 08Cr18Ni12Nb, 08Cr18Ni12Ti, 08Cr20Ni14Si2,10Cr17Ni13Mo2Ti, 12Cr18Ni9, 12Cr18Ni10Ti, 12Cr18Ni12Ti, 17Cr18Ni9, 08Cr22Ni6Ti.
- Random length:
for OD 76 - 114 mm - from 1.5 m to 8 m.
For OD 121-159 mm -from 1.5 m to 9 m.
Fixed length - subject to agreement.
|
| Sizes |
OD, mm |
WT, mm |
OD, mm |
WT, mm |
76 |
5 - 10 |
127 |
6 - 22 |
83; 89; 95; 102; 108; 114 |
5 - 12 |
133; 140; 146; 152; 159 |
6 - 26 |
121 |
6 - 20 |
|
|
| Mechanical properties |
Steel Grade |
Tensile Strength, N/mm2 (min) |
Yield Strength, N/mm2 (min) |
Elongation, % (min) |
08Cr17Ti |
372 |
- |
17 |
08Cr18Ni10 |
510 |
- |
40 |
08Cr18Ni10Ti |
510 |
- |
40 |
08Cr18Ni12Ti |
510 |
- |
40 |
08Cr22Ni6Ti |
588 |
- |
24 |
10Cr17Ni13Mo2Ti |
529 |
- |
35 |
10Cr23Ni18 |
491 |
- |
37 |
12Cr13 |
392 |
- |
21 |
12Cr18Ni10Ti |
529 |
- |
40 |
12Cr18Ni12Ti |
529 |
- |
40 |
15Cr25Ti |
441 |
- |
17 |
| Chemical Composition (%, max) |
Steel Grade |
C |
Si |
Mn |
Cr |
|
Mo |
S |
P |
Ti |
V |
08Cr17Ti |
0,08 |
0,8 |
0,8 |
16-18 |
- |
- |
0,025 |
0,035 |
5*C-0,8 |
- |
08Cr18Ni10 |
0,08 |
0,8 |
2 |
17-19 |
9-11 |
- |
0,02 |
0,035 |
- |
- |
08Cr18Ni10Ti |
0,08 |
0,8 |
2 |
17-19 |
9-11 |
- |
0,02 |
0,035 |
5*C-0,7 |
- |
08Cr18Ni12Ti |
0,08 |
0,8 |
2 |
17-19 |
11-13 |
- |
0,02 |
0,035 |
5*C-0,6 |
- |
08Cr22Ni6Ti |
0,08 |
0,8 |
0,8 |
21-23 |
5,3-6,3 |
- |
0,025 |
0,035 |
5*C-0,65 |
- |
10cr17Ni13Mo2Ti |
0,10 |
0,8 |
2 |
16-18 |
12-14 |
2-3 |
0,02 |
0,035 |
- |
5*C-0,7 |
10Cr23Ni18 |
0,10 |
1 |
2 |
22-25 |
17-20 |
- |
0,02 |
0,035 |
- |
- |
12Cr13 |
0,09-0,15 |
0,8 |
0,8 |
12-14 |
- |
- |
0,025 |
0,030 |
- |
- |
12Cr18Ni10Ti |
0,12 |
0,8 |
2 |
17-19 |
9-11 |
- |
0,02 |
0,035 |
5*C-0,8 |
- |
12Cr18Ni12Ti |
0,12 |
0,8 |
1-2 |
17-19 |
11-13 |
- |
0,02 |
0,03 |
0,5-0,7 |
- |
15Cr25Ti |
0,15 |
1 |
0,8 |
21-37 |
- |
- |
0,025 |
0,035 |
5*C-0,9 |
- |
|
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