Designation
| Name |
The value |
| Designation GOST Cyrillic |
10Х18Н9БЛ |
| Designation GOST Latin |
10X18H9BL |
| Transliteration |
10H18N9BL |
| By chemical elements |
10Cr18Н9Nb |
| Name |
The value |
| Designation GOST Cyrillic |
Х18Н9БЛ |
| Designation GOST Latin |
X18H9BL |
| Transliteration |
H18N9BL |
| By chemical elements |
Cr18Н9Nb |
Description
10Х18Н9БЛ steel is used: for the manufacture of shaped castings and castings in investment casting for aircraft industry group I — loaded items with the specific requirements for density and mechanical properties: high load brackets, sealed the housing, the frames of gyroscopes, stabilizers, etc. and group II — non-loaded and lightly loaded parts, rings, flanges, fittings, leaking instrument cabinets, etc.
Note
Steel corrosion resistant austenitic class.
Standards
| Name |
Code |
Standards |
| Steel castings |
В82 |
OST 1 80059-83 |
| Classification, nomenclature and General rules |
В20 |
OST 1 90005-91 |
| Castings with special properties (iron and steel) |
В83 |
OST 1 90090-79 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Cu |
N |
Al |
V |
Ti |
Mo |
W |
| OST 1 90090-79 |
≤0.1 |
≤0.025 |
≤0.025 |
2 |
17-20 |
≤1 |
8-12 |
Rest |
≤0.3 |
≤0.05 |
≤0.1 |
≤0.05 |
≤0.05 |
≤0.2 |
≤0.2 |
Fe is the basis.
According to OST 1 90090-79, the content of niobium (Nb) should be within 8 · C% - 0,9%. In steel, the nitrogen content is up to 0.070%.
Mechanical properties
| sT|s0,2, MPa |
σU, MPa |
d |
y, % |
KCU, kJ/m2 |
HB, MPa |
| Gradation of performance properties of the finished heat-treated parts for OST 1 90005-91 |
| - |
440-640 |
- |
- |
- |
- |
| The casting and the ceramic mold. Quenching in water from 1100-1150 °C |
| ≥196 |
≥441 |
≥25 |
≥35 |
≥490 |
126-170 |
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 |
| d |
Elongation after rupture |
| y |
The relative narrowing |
| KCU |
Toughness |
| HB |
Brinell hardness number |
