12H18N12M3TL

for details, stable when exposed to boiling sulphurous, phosphoric, formic, acetic acid, etc., as well as details for a long time running under load at temperatures up to 800 degrees centigrade.; corrosion-resistant austenitic steel

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, % P, % C, % S, % Mo, %
GOST 977-88 60.115–68.8 0.2–1 1–2 16–19 < 0.7 11–13 < 0.035 < 0.12 < 0.03 3–4

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 977-88 441 216 25 30 590 Hardening of 1100-1150 ° C, cooling water

Heat Treatment Modes

Treatment
Quenching 1100 - 1150 ° C, cooling in water

Analogues

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
P % Phosphorus
C % Carbon
S % Sulfur
Mo % Molybdenum

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