12DHN1MFL
weldments responsible loaded parts, which are requirements of sufficient strength and toughness, operating under the influence of static and dynamic loads
Classification
| Country |
Section |
Category |
| CIS, Russia, Ukraine |
Steels and alloys for castings |
Ordinary steel for castings |
Chemical composition
| Standard |
Fe, % |
Si, % |
Mn, % |
Cr, % |
Cu, % |
Ni, % |
V, % |
P, % |
C, % |
S, % |
Mo, % |
|---|
| GOST 977-88 |
94.21–96.12 |
0.2–0.4 |
0.3–0.55 |
1.2–1.7 |
0.4–0.65 |
1.4–1.8 |
0.08–0.15 |
< 0.03 |
0.1–0.18 |
< 0.03 |
0.2–0.3 |
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 |
|
|
|
785 |
638 |
12 |
20 |
294 |
|
| Castings |
GOST 977-88 |
|
|
|
981 |
735 |
10 |
20 |
294 |
Tempering 890-910 ° C, 520-630 ° C and Holidays |
Brinell hardness number
| Rolling |
Standard |
Classifiers |
Value, HBW |
| Alloy |
|
|
217–269 |
Режимы термической обработки
| Обработка |
|---|
| Нормализация 940 - 960 ° C, или Нормализация 890 - 910 ° C, Отпуск 520 - 630 ° C |
| Закалка 890 - 910 ° C, Отпуск 520 - 630 ° C |
Standards
Description of chemical elements
| Element |
Units of measurement |
Description |
| Fe |
% |
Iron |
| Si |
% |
Silicon |
| Mn |
% |
Manganese |
| Cr |
% |
Chrome |
| Cu |
% |
Copper |
| Ni |
% |
Nickel |
| V |
% |
Vanadium |
| P |
% |
Phosphorus |
| C |
% |
Carbon |
| S |
% |
Sulfur |
| Mo |
% |
Molybdenum |
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 |