09H17N3SL (10H17N3SL)

parts for increased strength for the aviation, chemical and other industries, working in high corrosive environments (nitric and weak organic acids, solutions, salts of organic and inorganic acids); martensitic steel grade

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, %
GOST 977-88 75.715–81.05 0.8–1.5 0.3–0.8 15–18 2.8–3.8 < 0.035 0.05–0.12 < 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 977-88 981 736 8 15 196 Annealing 660-670 ° C, Tempering 1040-1060 ° C, and Holidays 300-350 ° C, oil, air cooled

Heat Treatment Modes

Treatment
Annealing 660 - 670 ° C, Hardening 1040 - 1060 ° C, cooling in oil, Vacation 300 - 350 ° C, air cooling;
Tempering 1040 - 1060 ° C, cooling in oil, Vacation 540 - 560 ° C, air cooling;
Holiday 670 - 690 ° 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
Ni % Nickel
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