Designation
| Name |
The value |
| Designation GOST Cyrillic |
22ГЮ |
| Designation GOST Latin |
22GJu |
| Transliteration |
22GYu |
| By chemical elements |
22MnAl |
Description
22GJU steel is used: for the manufacture of electrically welded pipes with a diameter from 140 to 426 mm; — welded casing pipes and couplings to them, used for fastening oil and gas wells, pipelines and constructions for various purposes; solid cylinders downhole sucker rod pumps.
Note
Low alloy steel with low carbon content.
Standards
| Name |
Code |
Standards |
| Steel pipes and fittings to them |
В62 |
GOST 10704-91, GOST 10705-80, TU 14-3-1473-87, TU 14-3-1599-88, TU 14-159-247-94, TU 14-3Р-1471-2002 |
| Sheets and strips |
В33 |
TU 14-1-4598-89, TU 14-1-3956-85 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Fe |
N |
Al |
Ti |
Ca |
| GOST 10705-80 |
0.15-0.22 |
≤0.01 |
≤0.02 |
1.2-1.4 |
≤0.4 |
0.15-0.3 |
Rest |
≤0.012 |
0.02-0.05 |
≤0.03 |
≤0.02 |
Fe is the basis.
Mechanical properties
| Section, mm |
sT|s0,2, MPa |
σU, MPa |
d5, % |
| Electric-welded casing pipes and couplings for them in the state of delivery on the other 14-3-1599-88. In the delivery condition specified nominal diameter of the pipe |
| 140-245 |
379-552 |
≥517 |
≥18 |
| Longitudinal electric-welded pipes (Dy=140-426 mm) in the delivery condition. Listed marsvolta base metal |
| - |
≥344 |
≥490 |
≥15 |
Description mechanical marks
| Name |
Description |
| sT|s0,2 |
Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2% |
| σU |
Limit short-term strength |
| d5 |
Elongation after rupture |
