20H1M1F1TR (EP182)

Fasteners turbines and flange connections of steam lines and valves.

Fasteners turbines and steam pipes and flanges equipment with an operating temperature up to 580 ° C

Classification

Country Section Category
CIS, Russia, Ukraine Heat resistant steels and alloys Heat-resistant relaxation-resistant steel

Chemical composition

Standard Fe, % Si, % B, % Mn, % Cr, % Ti, % Ni, % V, % P, % C, % S, % Mo, %
GOST 20072-74 94.705–97.38 < 0.37 < 0.005 < 0.5 0.9–1.4 0.05–0.12 < 0.5 0.7–1 < 0.03 0.17–0.24 < 0.03 0.8–1.1

Information on suppliers

Physical characteristics

Temperature, °C $$E\cdot 10^{9}$$, $$MPa$$ $$\alpha\cdot 10^{6}$$, $$K^{-1}$$ $$\varkappa$$, $$\frac{W}{m\cdot K}$$ $$\rho$$, $$\frac{kg}{m^3}$$
20 215 7850
100 212 42.3
200 208 12 40.6
300 202 12.3 40.2
400 194 12.85 39.8
500 183 13 39.4
600 174 13.5 38.9
700 153 13.55 38.5
800 38.1

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
Hire GOST 20072-74 780 665 15 50 590 Tempering 980 ° C, oil, leave 700 ° C, 5-7 h

Brinell hardness number

Rolling Standard Classifiers Value, HBW
Alloy GOST 20072-74 annealing, hot rolling 229

Critical point temperatures

Ac1, K Ac3(Acm), K
800–830 890–930

Analogues

Germany
20 CrMoVTiB 4-10

Standards

Standard Description
GOST 20072-74
TU 14-1-522-72

Description of chemical elements

Element Units of measurement Description
Fe % Iron
Si % Silicon
B % Bor
Mn % Manganese
Cr % Chrome
Ti % Titan
Ni % Nickel
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
Ac1 K
Ac3(Acm) K