Designation
| Name |
The value |
| Designation GOST Cyrillic |
Р9К5 |
| Designation GOST Latin |
P9K5 |
| Transliteration |
R9K5 |
| By chemical elements |
- |
Description
R9K5 steel is used: for the manufacture of tools used when machining high strength, stainless and heat resistant steels and alloys, steels high hardness.
Note
The steel has a reduced tendency to overheat during hardening.
Standards
| Name |
Code |
Standards |
| Bars and shapes |
В22 |
GOST 1133-71, GOST 2590-2006, GOST 2591-2006 |
| Sheets and strips |
В33 |
GOST 4405-75 |
| Bars and shapes |
В32 |
GOST 7417-75, GOST 14955-77, GOST 19265-73 |
| Steel wire medium and high carbon |
В72 |
TU 14-1-2783-79 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Cu |
V |
Mo |
W |
Co |
| GOST 19265-73 |
0.9-1 |
≤0.03 |
≤0.03 |
0.2-0.5 |
3.8-4.4 |
0.2-0.5 |
≤0.6 |
Rest |
≤0.25 |
2.3-2.7 |
≤1 |
9-10 |
5-6 |
Fe is the basis.
Technological properties
| Name |
The value |
| Sanding behaviour |
Reduced |
| Viscosity |
reduced |
| Wear resistance |
increased |
