Steel 07Х25Н16АГЦ (ЭП781)
Designation
| Name |
The value |
| Designation GOST Cyrillic |
07Х25Н16АГЦ |
| Designation GOST Latin |
07X25H16AGTs |
| Transliteration |
07H25N16AGTs |
| The chemical elements |
07Cr25Н16NMnZn |
| Name |
The value |
| Designation GOST Cyrillic |
ЭП781 |
| Designation GOST Latin |
EP781 |
| Transliteration |
EhP781 |
| The chemical elements |
- |
Description
07Х25Н16АГЦ steel is used: for the manufacture of rolled products; hot-rolled and forged bars with a diameter of 35−180 mm; extruded bars (pressestelle) diameter 80−150 mm; parts of burners; thermocouple sheaths; parts of furnaces of various technological purposes.
Note
High-temperature steel.
Standards
| Name |
Code |
Standards |
| Bulls. Blanks. Slabs |
В31 |
TU 14-1-1214-75 |
| Sheets and stripes |
В33 |
TU 14-1-1454-75 |
| Sectional and shaped rolling |
В32 |
TU 14-1-912-74 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
N |
Ce |
Zr |
| TU 14-1-912-74 |
≤0.07 |
≤0.015 |
≤0.035 |
5-7 |
23-26 |
≤0.6 |
15-18 |
The rest |
0.3-0.45 |
0.01-0.15 |
0.01-0.1 |
| TU 14-1-1454-75 |
≤0.07 |
≤0.02 |
≤0.035 |
5-7 |
23-26 |
≤0.6 |
15-18 |
The rest |
0.3-0.45 |
0.01-0.15 |
0.01-0.1 |
Fe is the basis.
According to TU 14-1-1454-75 the chemical composition is given for steel grade 07Х25Н16АГЦ-Ш. Cerium and zirconium are introduced into the metal by calculation and chemical analysis are not determined.
According to TU 14-1-912-74, the chemical composition is given for steel grade 07Х25Н16АГЦ-Ш. Deviations in chemical composition are allowed: for carbon +0.010%, for silicon +0.10%, for nitrogen -0.030%. Cerium and zirconium are introduced into the metal by calculation and chemical analysis are not determined.
Mechanical characteristics
| Section, mm |
sT|s0,2, MPa |
σB, MPa |
d5, % |
d4 |
y, % |
| Flats on the other 14-1-1454-75. Quenching in water or air from 1050-1100 °C |
| 0.8-3.9 |
- |
≤981 |
- |
≥30 |
- |
| Bars hot rolled and forged steel 07Х25Н16АГЦ-sh (ЭП781-W) on the other 14-1-912-74. The longitudinal samples. Annealing in air or in water 1050-1150 °C (exposure for 0.5-1.0 hours) |
| 20-25 |
≥345 |
≥740 |
≥40 |
- |
≥45 |
| 20-25 |
- |
≥170 |
≥13 |
- |
≥17 |
Description mechanical marks
| Name |
Description |
| Section |
Section |
| sT|s0,2 |
Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2% |
| σB |
Limit short-term strength |
| d5 |
Elongation after rupture |
| d4 |
Elongation after rupture |
| y |
The relative narrowing |
Technological properties
| Name |
The value |
| Macrostructure and contamination |
Macrostructure of steel hot rolled, forged and extruded bars on the other 14-1-912-74 on the etched templeto should not be visible without using the magnifying devices of the traces of shrinkage, bubbles, captivity, cracks, fistulas, slag inclusions. The defects allowed for Central porosity, spot inhomogeneity, phase separation and to the square of podsadecki segregation should not exceed 1.0 points for each parameter in accordance with GOST 10243. |
| Features of production |
Bars hot rolled and forged on the other 14-1-912-74 are supplied without heat treatment. |
