Designation
| Name |
The value |
| Designation GOST Cyrillic |
03Н15К10М5Ф5 |
| Designation GOST Latin |
03H15K10M5F5 |
| Transliteration |
03N15K10M5F5 |
| By chemical elements |
03Н15Co10Mo5V5 |
| Name |
The value |
| Designation GOST Cyrillic |
ЭК169 |
| Designation GOST Latin |
EK169 |
| Transliteration |
EhK169 |
| By chemical elements |
- |
Description
03Н15К10М5Ф5 steel is used: for the production of large high-speed flywheels, heavy duty parts, shafts, axles, bolts, tires rotors.
Note
Batticaloa Maraging steel with high resistance to thermal embrittlement, delayed brittle fracture.
Standards
| Name |
Code |
Standards |
| Bars |
В55 |
TU 14-1-5201-93 |
| Processing of metals by pressure. Forgings |
В03 |
TU 14-1-5268-94 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Si |
Ni |
Fe |
Al |
V |
Mo |
Co |
| TU 14-1-5268-94 |
≤0.03 |
≤0.01 |
≤0.01 |
≤0.1 |
≤0.1 |
14.5-15.5 |
Rest |
≤0.15 |
5-5.7 |
4.6-5.3 |
9-9.7 |
Fe is the basis.
According to TU 14-1-5201-93, TU 14-1-5268-94, the chemical composition is given for steel grade 03N15K10M5F5-VI.
Mechanical properties
| Section, mm |
sT|s0,2, MPa |
σU, MPa |
y, % |
KCU, kJ/m2 |
| Forging as supplied on the other 14-1-5268-94 (samples) |
| 300-450 |
1900-2000 |
2000-2100 |
40-45 |
343-392 |
| The bars as supplied on the other 14-1-5201-93 (longitudinal samples) |
|
2000-2300 |
2100-2400 |
45-55 |
343-441 |
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 |
| y |
The relative narrowing |
| KCU |
Toughness |
Physical characteristics
| Temperature |
Е, HPa |
r, kg/m3 |
R, Mr. · m |
a, 10-6 1/°C |
| 20 |
190-200 |
8100 |
380-400 |
≤10 |
A description of the physical symbols
| Name |
Description |
| Е |
The normal elasticity modulus |
| r |
Density |
| l |
Coefficient of thermal conductivity |
