08H15N24V4TR (EP164, X15H24V4T)

Work and guide vanes, fasteners, gas turbine disks.

working and guide blades, fasteners, drives a gas turbine with a long service life at a temperature of 650−700 degrees.; austenitic steel

Classification

Country Section Category
CIS, Russia, Ukraine Heat resistant steels and alloys Heat resistant high alloy steel

Chemical composition

Standard Fe, % Si, % B, % Mn, % Cr, % Ti, % Ni, % Ce, % P, % C, % S, % W, %
GOST 5632-72 50.435–58.1 < 0.6 < 0.005 0.5–1 14–16 1.4–1.8 22–25 < 0.025 < 0.035 < 0.08 < 0.02 4–5

Information on suppliers

Physical characteristics

Temperature, °C $$E\cdot 10^{9}$$, $$MPa$$ $$\alpha\cdot 10^{6}$$, $$K^{-1}$$ $$\varkappa$$, $$\frac{W}{m\cdot K}$$ $$\rho$$, $$\frac{kg}{m^3}$$
20 223 12.2 8230
100 215 14.5
200 209 15.5
300 200 16.3
400 191 16.8
500 182 17.2
600 17.4
650 169 17.5
700 165 17.8
750 161 17.9
800 156

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ $$\sigma_{P}$$, $$MPa$$ $$\epsilon_L$$, % $$\psi$$, % $$KCU\cdot 10^{3}$$, $$\frac{J}{m^2}$$ Treatment
Rod 750 450 18 35 800 Hardening of 1130-1150 ° C, 2 hours, air cooling, aging of 730-750 ° C, 16 hours, air cooled
Rod 750 500 20 30 1200 Accommodation 700 ° C, 16 hours, air cooled

Technological Properties

Weldability
Difficult to weld

Standards

Standard Description
GOST 5632-72
TU 14-1-1139-74

Description of chemical elements

Element Units of measurement Description
Fe % Iron
Si % Silicon
B % Bor
Mn % Manganese
Cr % Chrome
Ti % Titan
Ni % Nickel
Ce % Cerium
P % Phosphorus
C % Carbon
S % Sulfur
W % Tungsten

Description of physical characteristics

Parameter Units of measurement Description
$$E\cdot 10^{9}$$ $$MPa$$ Elastic modulus
$$\alpha\cdot 10^{6}$$ $$K^{-1}$$ Coefficient of thermal (linear) expansion (range 20°C–T)
$$\varkappa$$ $$\frac{W}{m\cdot K}$$ Coefficient of thermal conductivity (the heat capacity of the material)
$$\rho$$ $$\frac{kg}{m^3}$$ The density of the material

Description of mechanical properties

Parameter Units of measurement Description
$$\sigma _{U}$$ $$MPa$$ Ultimate tensile strength
$$\sigma_{P}$$ $$MPa$$ Proportionality limit
$$\epsilon_L$$ % Elongation at break (longitudinal)
$$\psi$$ % Reduction in cross section on fracture
$$KCU\cdot 10^{3}$$ $$\frac{J}{m^2}$$ Impact toughness

Designation of types of weldability

Parameter Units of measurement Description
no limits Welding is performed without heating and without subsequent heat treatment
Boundedly welded Welding is possible with heating up to 100–120 °C and subsequent heat treatment
Difficult to weld For obtaining quality welded joints, additional operations are required: heating up to 200–300 °C for welding, heat treatment after welding — annealing
Not applicable for welded structures