Designation
| Name |
The value |
| Designation GOST Cyrillic |
08Х20Н14С2 |
| Designation GOST Latin |
08X20H14C2 |
| Transliteration |
08H20N14S2 |
| By chemical elements |
08Cr20Н14С2 |
| Name |
The value |
| Designation GOST Cyrillic |
ЭИ732 |
| Designation GOST Latin |
EI732 |
| Transliteration |
EhI732 |
| By chemical elements |
- |
Description
08KH20N14S2 steel is used: for the manufacture of pipes; details of pipeline valves; parts of machinery and special equipment.
Note
Austenite heat-resistant steel-ferritic class.
Temperature intense scaling in air 1000−1050 °C.
Resistant to carburizing environments.
Standards
| Name |
Code |
Standards |
| Classification, nomenclature and General rules |
В30 |
GOST 5632-72 |
| Bars and shapes |
В32 |
GOST 5949-75, TU 14-11-245-88 |
| Steel pipes and fittings to them |
В62 |
GOST 9940-81, GOST 9941-81, TU 14-3-1654-89 |
| Blanks. Of the workpiece. Slabs |
В31 |
OST 3-1686-90, TU 14-1-565-84 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Cu |
V |
Ti |
Mo |
W |
| GOST 5632-72 |
≤0.08 |
≤0.025 |
≤0.035 |
≤1.5 |
19-22 |
2-3 |
12-15 |
Rest |
≤0.3 |
≤0.2 |
≤0.2 |
≤0.3 |
≤0.2 |
Fe is the basis.
Mechanical properties
| Section, mm |
sT|s0,2, MPa |
σU, MPa |
d5, % |
y, % |
KCU, kJ/m2 |
| Bars hot rolled and forged according to GOST 5949-75. Annealing in air 1000-1150 °C |
|
≥245 |
≥540 |
≥40 |
≥50 |
≥981 |
| Seamless hot deformed tubes in the delivery condition according to GOST 9940-81 |
|
- |
≥510 |
≥35 |
- |
- |
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 |
| y |
The relative narrowing |
| KCU |
Toughness |
