Designation
| Name |
The value |
| Designation GOST Cyrillic |
09Х17Н7Ю |
| Designation GOST Latin |
09X17H7Ju |
| Transliteration |
09H17N7Yu |
| By chemical elements |
09Cr17Н7Al |
| Name |
The value |
| Designation GOST Cyrillic |
ЭИ973 |
| Designation GOST Latin |
EI973 |
| Transliteration |
EhI973 |
| By chemical elements |
- |
Description
09KH17N7JU steel is used: for the manufacture of wing devices, rudders and brackets, working in sea water.
Note
Stainless steel austenitic-martensitic class. The best corrosion resistance the steel has, after two-time first holiday 740−760 °C.
Standards
| Name |
Code |
Standards |
| Classification, nomenclature and General rules |
В30 |
GOST 5632-72 |
| Sheets and strips |
В33 |
GOST 7350-77, TU 14-1-394-72 |
| Blanks. Of the workpiece. Slabs |
В31 |
OST 3-1686-90 |
| Processing of metals by pressure. Forgings |
В03 |
TU 14-1-3589-83 |
| Bars and shapes |
В32 |
TU 14-11-245-88 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Cu |
Al |
V |
Ti |
Mo |
W |
| GOST 5632-72 |
≤0.09 |
≤0.02 |
≤0.03 |
≤0.08 |
16-17.5 |
≤0.8 |
7-8 |
Rest |
≤0.3 |
0.5-0.8 |
≤0.2 |
≤0.2 |
≤0.3 |
≤0.2 |
Fe is the basis.
Mechanical properties
| sT|s0,2, MPa |
σU, MPa |
d5, % |
KCU, kJ/m2 |
| Hot rolled sheet (4,0-50,0 mm) and cold rolled (4,0-5,0 mm) steel according to GOST 7350-77. Hardening in air, 1030-1070 °C to + First vacation at 740-760 °C, air cooling or water + Second vacation at 580-680 °C, air cooling |
| ≤735 |
≥830 |
≥12 |
≥490 |
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 |
| KCU |
Toughness |
