Designation
| Name |
The value |
| Designation GOST Cyrillic |
4Х4Н5МК |
| Designation GOST Latin |
4X4H5MK |
| Transliteration |
4H4N5MK |
| By chemical elements |
4Cr4Н5Mo |
| Name |
The value |
| Designation GOST Cyrillic |
ВКЛ-4М |
| Designation GOST Latin |
BKL-4M |
| Transliteration |
VKL-4M |
| By chemical elements |
WCoBe-4Mo |
Description
4Х4Н5МК steel is used: for the manufacture of casting parts of aviation, accurate methods of casting in ceramic form of constant models.
Note
High-strength structural alloy steel.
Standards
| Name |
Code |
Standards |
| Classification, nomenclature and General rules |
В20 |
OST 1 90005-91 |
Mechanical properties
| σU, MPa |
HRC |
| Gradation of performance properties of the finished heat-treated parts for OST 1 90005-91 |
| 1720-1810 |
49-53 |
Description mechanical marks
| Name |
Description |
| σU |
Limit short-term strength |
| HRC |
Rockwell hardness (indenter diamond spheroconical) |