15HMFKR

the forging of turbine components operating at a temperature of 580−600 deg .; conductivity of steam pipes, collector, superheater

Classification

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

Chemical composition

Standard Fe, % Si, % B, % Mn, % Co, % Cr, % V, % P, % C, % S, % Mo, %
94.36–95.904 0.17–0.37 0.006–0.01 0.4–0.7 1.3–1.5 1–1.3 0.2–0.32 < 0.03 0.12–0.18 < 0.03 0.9–1.2

Information on suppliers

Physical characteristics

Temperature, °C $$E\cdot 10^{9}$$, $$MPa$$ $$\alpha\cdot 10^{6}$$, $$K^{-1}$$ $$\varkappa$$, $$\frac{W}{m\cdot K}$$ $$\rho$$, $$\frac{kg}{m^3}$$
20 219 7850
100 215 12.1 32.2
200 208.5 13.1 31.8
300 200 14.1 31.4
400 192.5 15.1 31
600 171 15.4 28.9

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
Alloy Longitudinal 600 450 15 40 600
Alloy Tangential 575 425 11 32 450

Critical point temperatures

Ac3(Acm), K
980–990

Description of chemical elements

Element Units of measurement Description
Fe % Iron
Si % Silicon
B % Bor
Mn % Manganese
Co % Cobalt
Cr % Chrome
V % Vanadium
P % Phosphorus
C % Carbon
S % Sulfur
Mo % Molybdenum

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

Description of temperatures of critical points

Parameter Units of measurement Description
Ac3(Acm) K