High-structural steel alloyed medium carbon 40X24N12SL (30H24N12SL)

  • Chemical composition
Fe Iron Rest
Si Silicon 0.5 — 1.5
Mn Manganese 0.3 — 0.8
Ni Nickel 11.0 — 13.0
S Sulfur <0.03
C Carbon <0.4
P Phosphorus <0.035
Cr Chromium 22.0 — 26.0

Analogs in Germany

F 1.4837

CHRONIMO 1.4837

G 4837

Almenit 4837

4837.0 BOHLER G

Inox 1.4837

Hacotherm HBG 837

PK 12

PK 14

A 1153

HB 13 A

P 4837

ZGN 25

Pyrotherm G 25/12

4837

EW 4837

Dux G 4837

Guronit 25 N 12

GX 40 CrNiSi 25−12 DIN 17465

1.4837 DIN 17465

GX40CrNiSi25−12 DIN EN 10295: 2002

1.4837 DIN EN 10295: 2002

Marker G 4837 S + C

Analogs in the USA

Hi-35

HH ACI

Hi aci

SA 297 Grade HH ASME SA297

SA 297 Grade HI ASME SA297

SA 608 Grade HI35 ASME SA608

A 297 Grade HH ASTM A297

A 297 Grade HI ASTM A297

A 608 Grade HI35 ASTM A608

A 608 (J94013) ASTM A608

J93503 UNS

J94003 UNS

J94013 UNS

International analogues according to ISO standards

GX40CrNiSi25−12 ISO 11973: 1999

GX40CrNiSi25−12 ISO 11973: 2015

1.4837 ISO 11973: 2015

GX40CrNiSi25−12 ISO 13583−2: 2003

GX40CrNiSi25−12 ISO 13583−2: 2015

1.4837 ISO 13583−2: 2015

parts operating at high temperature and pressure (compressor blades and nozzle units, furnace conveyors, screws, fasteners, etc.); austenitic-ferritic steel. Technical requirements — according to GOST 4543−81, GOST 977−87 and GOST 5632−82

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 58.235–66.2 0.5–1.5 0.3–0.8 22–26 11–13 < 0.035 < 0.4 < 0.03

Information on suppliers

Physical characteristics

Temperature, °C $$E\cdot 10^{9}$$, $$MPa$$ $$\alpha\cdot 10^{6}$$, $$K^{-1}$$ $$\rho$$, $$\frac{kg}{m^3}$$ $$R\cdot 10^{-6}$$, $$\Omega\cdot m$$
20 196 7800 0.86
100 18.4
500 167
600 157
700 145

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ $$\sigma_{P}$$, $$MPa$$ $$\epsilon_L$$, % $$\psi$$, % Treatment
Castings GOST 977-88 < 100 491 245 20 28 Hardening 1050 ° C

Casting and technological parameters

linear shrinkage, %
2.7

Technological Properties

Weldability Flake Susceptibility Propensity to temper brittleness
no limits not sensitive not inclined

Heat Treatment Modes

Treatment
Quenching 1040 - 1060 ° C, cooled in water, oil or air

Analogues

Germany USA
1.4826 J94013

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
$$E\cdot 10^{9}$$ $$MPa$$ Elastic modulus
$$\alpha\cdot 10^{6}$$ $$K^{-1}$$ Coefficient of thermal (linear) expansion (range 20°C–T)
$$\rho$$ $$\frac{kg}{m^3}$$ The density of the material
$$R\cdot 10^{-6}$$ $$\Omega\cdot m$$ 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

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