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
Blanks. Of the workpiece. Slabs	В31	TU 14-1-1214-75
Sheets and strips	В33	TU 14-1-1454-75
Bars and shapes	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	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	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 properties

Section, mm	s_T\|s_0,2, MPa	σ_U, 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
s_T\|s_0,2	Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σ_U	Limit short-term strength
d₅	Elongation after rupture
d₄	Elongation after rupture
y	The relative narrowing

Technological properties

Name	The value
Macrostructure and pollution	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.
Particularities of production of goods	Bars hot rolled and forged on the other 14-1-912-74 are supplied without heat treatment.

Steel 07Х25Н16АГЦ (ЭП781)

Designation

Description