16H18N12S4TYUL (EI654LK)

welded products, in aggressive environments, in particular with concentrated nitric acid at a temperature up to 105 degrees C .; steel corrosion-resistant austenitic — ferritic class

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, % Ti, % Ni, % Al, % P, % C, % S, %
GOST 977-88 61.2–67.04 3.8–4.5 0.5–1 17–19 0.4–0.7 11–13 0.13–0.35 < 0.03 0.13–0.19 < 0.03

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 977-88 491 245 15 30 275 Hardening of 1150-1200 ° C, cooling water

Heat Treatment Modes

Treatment
Quenching 1150 - 1200 ° C, air cooling

Standards

Standard Description
GOST 977-88

Description of chemical elements

Element Units of measurement Description
Fe % Iron
Si % Silicon
Mn % Manganese
Cr % Chrome
Ti % Titan
Ni % Nickel
Al % Aluminium
P % Phosphorus
C % Carbon
S % Sulfur

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