Steel 90Г29Ю9ВБМ (ДИ38; 90Г29Ю9ВМБФ; ДИ38Ф)
Designation
| Name |
The value |
| Designation GOST Cyrillic |
90Г29Ю9ВБМ |
| Designation GOST Latin |
90G29Ju9BBM |
| Transliteration |
90G29Yu9VBM |
| The chemical elements |
90Mn29Al9WNbMo |
| Name |
The value |
| Designation GOST Cyrillic |
ДИ38 |
| Designation GOST Latin |
DI38 |
| Transliteration |
DI38 |
| The chemical elements |
CuИ38 |
| Name |
The value |
| Designation GOST Cyrillic |
90Г29Ю9ВМБФ |
| Designation GOST Latin |
90G29Ju9BMBF |
| Transliteration |
90G29Yu9VMBF |
| The chemical elements |
90Mn29Al9WMoNbV |
| Name |
The value |
| Designation GOST Cyrillic |
ДИ38Ф |
| Designation GOST Latin |
DI38F |
| Transliteration |
DI38F |
| The chemical elements |
CuИ38V |
Description
90Г29Ю9ВБМ steel is used: for the manufacture of forged rods and strips, rolled sections and tubes; parts of aircraft.
Note
Steel corrosion resistant austenitic class with special physical properties.
Standards
| Name |
Code |
Standards |
| Classification, nomenclature and general norms |
В20 |
OST 1 90005-91 |
| Sectional and shaped rolling |
В32 |
TU 14-1-2190-77, TU 14-1-4991-91 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Cu |
Al |
Mo |
Nb |
Ca |
W |
Ce |
Mg |
| TU 14-1-2190-77 |
0.85-0.95 |
≤0.02 |
≤0.02 |
28-30 |
≤0.3 |
≤0.3 |
≤0.5 |
The rest |
≤0.3 |
8.3-9.3 |
0.3-0.5 |
0.3-0.6 |
0.05-0.1 |
0.6-0.9 |
≤0.05 |
0.05-0.1 |
Fe is the basis.
According to TU 14-1-2190-77, the chemical composition is given for steel grade 90Г29Ю9ВМБ-Ш (D38-Ш). The following deviations from the chemical composition are allowed: for aluminum ± 0.15%; for manganese -1.00%; for silicon +0.15%, for phosphorus + 0.005%. Cerium, magnesium and calcium are introduced into the metal by calculation and chemical analysis is not determined.
According to TU 14-1-4991-91, the chemical composition of 90G29YU9VMBF-SH steel (D3838F-III) should comply with Appendix 2, which is sent by the company NPO Temp (or TsNIICHM named after Bardin) upon request. The following deviations from the chemical composition in% are allowed: for manganese - minus 1.0; on aluminum - ± 0,15; for silicon - plus 0,15; on phosphorus - plus 0,005. The content of residual elements in the steel should be: chromium - no more than 0.30%, nickel - no more than 0.50%, copper - no more than 0.30%. Cerium, calcium and magnesium are introduced into the metal from the calculation of the content: cerium - 0.05%, magnesium - 0.05%, calcium - 0.05%. The content of cerium, calcium and magnesium is not determined by chemical analysis.
Mechanical characteristics
| Section, mm |
sT|s0,2, MPa |
σB, MPa |
d5, % |
y, % |
kJ/m2, кДж/м2 |
Brinell hardness number, MPa |
| Gradation of performance properties of the finished heat-treated parts for OST 1 90005-91 |
| - |
- |
830-980 |
- |
- |
- |
- |
| - |
- |
1080-1230 |
- |
- |
- |
311-341 |
| Bars and strip hot rolled and forged on the other 14-1-4991-91, THE 14-1-2190-77. Quenching in oil or water with 1040-1060 °C + Aging at 540-560 °C (aging 16 h), air cooling (longitudinal samples) |
|
≥834 |
≥981 |
≥25 |
≥50 |
≥490 |
285-331 |
| Bars and strips of wrought iron on the other 14-1-4991-91. Quenching in water from 940-960 °C (for longitudinal samples) |
|
≥540 |
≥932 |
≥50 |
≥60 |
≥1770 |
241-302 |
Description mechanical marks
| Name |
Description |
| Section |
Section |
| sT|s0,2 |
Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2% |
| σB |
Limit short-term strength |
| d5 |
Elongation after rupture |
| y |
The relative narrowing |
| kJ/m2 |
Toughness |
