Name	The value
Name	The value
Designation GOST Cyrillic	06Х14Н6Д2МБТ
Designation GOST Latin	06X14H6D2MBT
Transliteration	06H14N6D2MBT
By chemical elements	06Cr14Н6Cu2MoNbTi

Name	The value
Name	The value
Designation GOST Cyrillic	ЭП817
Designation GOST Latin	EP817
Transliteration	EhP817
By chemical elements	-

Description

06Х14Н6Д2МБТ steel is used: for the production of long products and forgings; parts and components of special-purpose machinery; aircraft loaded assemblies operating at temperatures from -70 °C to +300 °C obsecenities conditions in contact with the fuel.

Note

Steel corrosion-resistant martensitic class.

Standards

Name	Code	Standards
Name	Code	Standards
Classification, nomenclature and General rules	В20	OST 1 90005-91
Blanks. Of the workpiece. Slabs	В31	TU 1-92-67-82
Bars and shapes	В32	TU 14-1-2407-78
Processing of metals by pressure. Forgings	В03	TU 14-1-2996-80

Chemical composition

Standard	C	S	P	Mn	Cr	Si	Ni	Fe	Cu	Ti	Mo	Nb	Ca	Ce	Co	La
Standard	C	S	P	Mn	Cr	Si	Ni	Fe	Cu	Ti	Mo	Nb	Ca	Ce	Co	La
TU 14-1-2996-80	0.05-0.08	≤0.02	≤0.02	0.1-1	13.5-15	0.05-0.7	5.05-6	Rest	1.8-2.2	0.02-0.15	0.8-1.6	0.03-0.45	0.002-0.1	0.02-0.2	-	0.01-0.1
TU 14-1-2407-78	0.01-0.07	≤0.018	≤0.02	≤1	13-14.8	≤0.7	5.8-6.8	Rest	1.8-2.5	0.03-0.1	1.4-1.7	0.25-0.4	≤0.005	≤0.05	≤0.3	≤0.05

Fe is the basis.
According to TU 14-1-2407-78 the chemical composition is given for steel grade 06H14N6D2MBT-III. Cerium, lanthanum and calcium are introduced by calculation and their sum is Ce + La + Ca ≤ 0.10%.
According to TU 14-1-2996-80 the chemical composition is given for steel grade 06H14N6D2MBT.

Mechanical properties

Section, mm	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %	y, %	KCU, kJ/m²	HB, MPa	HRC
Section, mm	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %	y, %	KCU, kJ/m²	HB, MPa	HRC
Gradation of performance properties of the finished heat-treated parts for OST 1 90005-91
-	-	1230-1370	-	-	-	363-401	36-40
Stamping of steel grade 06Х14Н6Д2МБТ-W on the other 1-92-67-82. Quenching in water or in air 1000±10 °C (aging of 0.5-1.0 h) + cold Treatment (-70 °C) 2 hours or (-50 °C) - 4 hours + aged at 505-525 °C (exposure 1-2 hours)
	≥930	≥1230	≥8	≥45	≥587	-	-
	≥930	≥1230	≥10	≥55	≥785	-	-

Description mechanical marks

Name	Description
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
y	The relative narrowing
KCU	Toughness
HB	Brinell hardness number
HRC	Rockwell hardness (indenter diamond spheroconical)

Technological properties

Name	The value
Name	The value
Microstructure	Introduction to steel ~1.5 % Mo, the inhibitory diffusion processes along the grain boundaries move the selection start carbide mesh higher temperatures, which causes the separation of these areas in the heat affected zone in a welded connection. Control of the microstructure on the other 1-92-67-82 on the content of Delta-ferrite is carried out in accordance with the standards developed by VIAM and agreed with the metal suppliers and consumers of forgings.
Features of heat treatment	On the other 1-92-67-82 stamping are delivered after a single or double annealing at a temperature of 660±10 °With not less than 6 hours. By agreement of the parties allowed the annealing at a temperature of 660±20 °C. By agreement of the parties it is possible to supply forgings in obezvojennom state, thus obezvrezivate annealing is performed according to the mode: step 1 - extract 3 hours at a temperature of 850 °C, air cooling; 2nd stage - exposure depending on the cross section at 500 °C (exposure time depending on the cross section of forgings: mm -8 21-30 hours; 31-40 mm, 12 hours; 41-50 mm - 16 hours; 51-60 mm to 20 hours; 61-70 mm - 25 hours; 71-80 mm - 32 hours).
Corrosion resistance	Steel has a high resistance of welded joints to stress corrosion cracking under tension.
Frost	Steel in comparison with analogues has a much higher viscosity at low temperatures (to -70 °C).

Steel 06Х14Н6Д2МБТ (ЭП817)

Designation