Steel 10Х18Н9БЛ (Х18Н9БЛ)

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