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
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 |
|