Steel 4Х4Н5МК (on-4M)

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)