15H23N18L

Steel is produced in Russia according to GOST 5632−72. Analogs in Germany:

F 1.4840

CHRONIMO 1.4840

4840.1 BOHLER G

PK 19 S

A 1200

HB 20 ASo

GX 15 CrNi 25 20

P 4840

Marker G 4840

ZGN 12 S

Pyrotherm G 25/20

Dux G 4840

Guronit X 15 CrNi 25 20

GX 15 CrNi 25−20 SEW 595

1.4840 SEW 595

for corrosion-resistant parts, not pipes high mechanical strength, heat-resistant up to 900 degrees C; 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, % Ni, % P, % C, % S, %
GOST 977-88 51.44–59.7 0.2–1 1–2 22–25 17–20 < 0.03 0.1–0.2 < 0.03

Information on suppliers

Physical characteristics

Temperature, °C $$E\cdot 10^{9}$$, $$MPa$$ $$\rho$$, $$\frac{kg}{m^3}$$ Cp, Дж/кг·К
20 204 7860 506

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 977-88 540 294 25 30 981 Hardening of 1050-1100 ° C, cooling water

Brinell hardness number

Rolling Standard Classifiers Value, HBW
Rod GOST 4543-71 raw, rolling, fat, Transverse 250–270

Technological Properties

Weldability Flake Susceptibility Propensity to temper brittleness
Difficult to weld insensitive loathsome

Limit operating modes

Standard Температура, °C
GOST 977-88 < 500

Heat Treatment Modes

Treatment
Hardening 1050 - 1100 ° C, cooling in water

Analogues

Germany
1.4840 (GX15CrNi25-20)

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 physical characteristics

Parameter Units of measurement Description
Cp Дж/кг·К Specific heat of material
$$E\cdot 10^{9}$$ $$MPa$$ Elastic modulus
$$\rho$$ $$\frac{kg}{m^3}$$ The density of the material

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

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