12H18N12BL (10H18N12BL)

cast parts for power plants with long life at 600−650 degrees C and 700 degrees C during limited; austenitic steel, corrosion-resistant, heat-resistant up to 650 degrees C

Classification

Country Section Category
CIS, Russia, Ukraine Steels and alloys for castings Steel for casting with special properties

Chemical composition

Standard Fe, % Si, % Mn, % Cr, % Ni, % P, % C, % S, % Nb, %
GOST 977-88 65.185–70.8 < 0.55 0.5–1 17–19 11–13 < 0.02 < 0.12 < 0.025 0.7–1.1

Information on suppliers

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
Castings GOST 977-88 392 196 13 18 196 Hardening 1180 ° C, air cooling, Aging 800 ° C, 10 hours aging 750 ° C, 16 h

Heat Treatment Modes

Treatment
Hardening 1170 - 1190 ° C, air cooling. Aging 790 - 810 ° C, 10 h., Aging 740 - 760 ° C, 16 h.,

Analogues

Germany USA
F 1.4552 CF8C

Standards

Standard Description
GOST 977-88

Description of chemical elements

Element Units of measurement Description
Fe % Iron
Si % Silicon
Mn % Manganese
Cr % Chrome
Ni % Nickel
P % Phosphorus
C % Carbon
S % Sulfur
Nb % Niobium

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