Steel 03Н15К10М5Ф5 (ЭК169)

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