09H14N19V2BR (EI695R, 1H14N18B2BR)

and conductivity of steam superheater tube ultra-high pressure systems with long service at temperatures up to 700 degrees C; 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, % Ni, % P, % C, % S, % Nb, % W, %
GOST 5632-72 58.12–66.03 < 0.6 < 0.005 < 2 13–15 18–20 < 0.035 0.07–0.12 < 0.02 0.9–1.3 2–2.8

Information on suppliers

Physical characteristics

Temperature, °C $$E\cdot 10^{9}$$, $$MPa$$ $$\alpha\cdot 10^{6}$$, $$K^{-1}$$ $$\varkappa$$, $$\frac{W}{m\cdot K}$$ $$\rho$$, $$\frac{kg}{m^3}$$ $$R\cdot 10^{-6}$$, $$\Omega\cdot m$$
20 207 8100 0.816
100 15.9 13.7 8070 0.873
200 16.5 16.2 8030 0.934
300 17.2 18.6 7980 0.988
400 16.6 20.5 7940 1.036
500 18 22.6 7890 1.078
600 158 18.3 24.4 7850 1.114
700 151 18.6 7800 1.115
800 18.7 26.4 7750 1.172
900 19 28 1.198

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 GOST 5949-75 510 215 35 50 Hardening of 1140-1160 ° C, air
Pipe billet 500 220 38 50 1400 Hardening 1100 ° C, the water

Technological Properties

Weldability
Difficult to weld

Standards

Standard Description
GOST 5632-72

Description of chemical elements

Element Units of measurement Description
Fe % Iron
Si % Silicon
B % Bor
Mn % Manganese
Cr % Chrome
Ni % Nickel
P % Phosphorus
C % Carbon
S % Sulfur
Nb % Niobium
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
$$R\cdot 10^{-6}$$ $$\Omega\cdot m$$ Electrical resistivity

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