Designation
| Name |
The value |
| Designation GOST Cyrillic |
ВКЛ-5 |
| Designation GOST Latin |
BKL-5 |
| Transliteration |
VKL-5 |
| By chemical elements |
WCoBe-5 |
Description
Steel on-5 is used: for the manufacture of casting parts of aviation, accurate methods of casting in ceramic form of constant models.
Note
Alloy structural steel case hardening steel.
Standards
| Name |
Code |
Standards |
| Classification, nomenclature and General rules |
В20 |
OST 1 90005-91 |
| Steel castings |
В82 |
OST 1 90093-82 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Cu |
N |
Al |
V |
Mo |
W |
Ce |
| OST 1 90093-82 |
0.14-0.2 |
≤0.02 |
≤0.02 |
0.6-1.2 |
1-1.8 |
1-1.5 |
0.8-1.2 |
Rest |
≤0.3 |
≤0.015 |
≤0.08 |
0.05-0.2 |
1.6-2.1 |
0.7-1.1 |
0.05-0.1 |
Fe is the basis.
Mechanical properties
| t отпуска, °C |
sT|s0,2, MPa |
σU, MPa |
d5, % |
y, % |
KCU, kJ/m2 |
HB, MPa |
HRC |
| Gradation of performance properties of the finished heat-treated parts for OST 1 90005-91 |
| - |
- |
830-980 |
- |
- |
- |
229-302 |
- |
| - |
- |
- |
- |
- |
- |
341-445 |
37-43 |
| Casting. Normalization at 1000-1050 °C, leave at 640-660 °C, air cooling + Tempering in oil 870-920 °C + Vacation |
| 340-360 |
≥880 |
≥1180 |
≥7 |
≥20 |
≥392 |
353-445 |
- |
| 670-690 |
≥735 |
≥835 |
≥10 |
≥30 |
≥490 |
229-302 |
- |
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 |
| HB |
Brinell hardness number |
| HRC |
Rockwell hardness (indenter diamond spheroconical) |
