20H13L

for the manufacture of castings parts subjected to impact loads (turbine blades, valves, hydraulic presses, fixtures crackers, nozzle segments and forms for glass, frames box-boxes, household items, etc.), as well as the products subjected to the action of relatively weak corrosive media (precipitation, wet steam, aqueous solutions of organic acid salts at room temperature); 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, % P, % C, % S, %
GOST 977-88 84.095–87.34 0.2–0.8 0.3–0.8 12–14 < 0.03 0.16–0.25 < 0.025

Information on suppliers

Physical characteristics

Temperature, °C $$E\cdot 10^{9}$$, $$MPa$$ $$\alpha\cdot 10^{6}$$, $$K^{-1}$$ $$\varkappa$$, $$\frac{W}{m\cdot K}$$ $$\rho$$, $$\frac{kg}{m^3}$$ $$c\cdot 10^{-3}$$, $$\frac{J}{kg\cdot K}$$ $$R\cdot 10^{-6}$$, $$\Omega\cdot m$$
20 222 21 7740 0.645
100 216 10 23 0.47 0.695
200 211 10.8 24 0.491 0.775
300 203 11.3 25 0.512 0.859
400 195 11.7 26 0.533 0.931
500 184 12.1 27 0.563 0.985
600 167 12.4 27 0.596 1.055
700 149 12.6 27 0.643 1.115
800 140 12.8 28 0.68 1.125
900 10.8 28 0.693 1.16

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 < 100 589 441 16 40 392

Casting and technological parameters

linear shrinkage, %
2.2–2.3

Technological Properties

Weldability
Boundedly welded

Heat Treatment Modes

Treatment
Annealing 940 - 960 ° C, Hardening 1040 - 1060 ° C, cooling in oil or in air, Release 740 - 760 ° C, air cooling

Analogues

USA Germany
J91153 1.4027 (GX20Cr14)

Standards

Standard Description
GOST 977-88

Description of chemical elements

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

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
$$c\cdot 10^{-3}$$ $$\frac{J}{kg\cdot K}$$ The specific heat of the material (range 20°C–T)
$$R\cdot 10^{-6}$$ $$\Omega\cdot m$$ 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

Description of the casting and technological parameters

Parameter Units of measurement Description
linear shrinkage % The difference between model dimensions and the model casting

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