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

Country	Section	Category
Country	Section	Category
CIS, Russia, Ukraine	Steels and alloys for castings	Steel for casting with special properties

Standard	Fe, %	Si, %	Mn, %	Cr, %	Ni, %	P, %	C, %	S, %
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

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

Rolling	Standard	Size, mm	Tension	Classifiers	$\sigma _{U}$ , $MPa$	$\sigma_{P}$ , $MPa$	$\epsilon_L$ , %	$\psi$ , %	$KCU\cdot 10^{3}$ , $\frac{J}{m^2}$	Treatment
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

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

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

Standard	Температура, °C
Standard	Температура, °C
GOST 977-88	< 500

Treatment
Treatment
Hardening 1050 - 1100 ° C, cooling in water

Germany
Germany
1.4840 (GX15CrNi25-20)

Standard	Description
Standard	Description
GOST 977-88

Parameter	Units of measurement	Description
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

Parameter	Units of measurement	Description
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