Steel 08KH17N13M2T (0Х17Н13М2Т; ЭИ448)

Designation

Name	The value
Designation GOST Cyrillic	08Х17Н13М2Т
Designation GOST Latin	08X17H13M2T
Transliteration	08H17N13M2T
By chemical elements	08Cr17Н13Mo2Ti

Name	The value
Designation GOST Cyrillic	0Х17Н13М2Т
Designation GOST Latin	0X17H13M2T
Transliteration	0H17N13M2T
By chemical elements	0Cr17Н13Mo2Ti

Name	The value
Designation GOST Cyrillic	ЭИ448
Designation GOST Latin	EI448
Transliteration	EhI448
By chemical elements	-

Description

08KH17N13M2T steel is used: for the manufacture of welded structures, and fastening devices operating in the conditions with a boiling phosphoric, sulfuric, 10% acetic acid and sulfuric acid environments, designed for long service life at the operating temperature to 600 °C, for connections of equipment installed in radioactive environments and do not come in contact with aggressive environment.

Note

Steel romancelatina corrosion resistant austenitic class.

Standards

Name	Code	Standards
Steel pipes and fittings to them	В62	GOST 11068-81, TU 14-159-165-87, TU 14-158-135-2003, TU 14-158-137-2003
Bars and shapes	В22	GOST 1133-71, GOST 2590-2006, GOST 2591-2006, GOST 2879-2006
Sheets and strips	В23	GOST 19903-74, GOST 19904-90, GOST 103-2006, GOST 19903-90
Sheets and strips	В33	GOST 4405-75, GOST 7350-77, TU 14-1-394-72, TU 14-1-4364-87
Classification, nomenclature and General rules	В30	GOST 5632-72
Bars and shapes	В32	GOST 5949-75, GOST 7417-75, GOST 8559-75, GOST 8560-78, GOST 14955-77, TU 14-11-245-88
Blanks. Of the workpiece. Slabs	В31	OST 3-1686-90, TU 14-1-790-73
Welding and cutting metals. Soldering, riveting	В05	OST 95 10441-2002
Thermal and thermochemical treatment of metals	В04	STP 26.260.484-2004

Chemical composition

Standard	C	S	P	Mn	Cr	Si	Ni	Fe	Cu	V	Mo	W
GOST 5632-72	≤0.08	≤0.02	≤0.035	≤2	16-18	≤0.8	12-14	Rest	≤0.3	≤0.2	2-3	≤0.2
TU 14-158-137-2003	≤0.08	≤0.02	≤0.035	≤2	16-18	≤0.8	12-14	Rest	-	-	2-3	-

Fe is the basis.
According to GOST 5632-72, the content of Ti% = 5С% - 0,7%.
According to TU 14-158-137-2003 the content of Ti% = 5С% - 0,7%. It is permissible to introduce cerium and other rare-earth metals according to the calculation by 0.2-0.3%, which are not determined by chemical analysis.

Mechanical properties

Section, mm	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %	y, %
Hot rolled sheet (4,0-50,0 mm) and cold rolled (4,0-5,0 mm) steel according to GOST 7350-77. Quenching in water or air from 1030-1080 °C
-	≥196	≥510	≥40	-
Bars hot rolled and forged according to GOST 5949-75. Quenching in air, oil or water from 1050-1100 °C
	≥196	≥490	≥40	≥50
Bars hot rolled and forged at STP 26.260.484-2004. Quenching in water or air from 1050-1100 °C
	≥200	≥500	≥35	≥45
Bars hot rolled and forged at STP 26.260.484-2004. A stabilizing anneal at 890-910 °C, air cooling or Annealing at 1020-1060 °C, air cooling or furnace or Annealing at 1100-1140 °C, cooling with the furnace
	≥200	≥500	≥30	≥40
Cold-rolled tubes after austenization on delivery
	-	≥500	≥35	-

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
y	The relative narrowing

Physical characteristics

Temperature	r, kg/m³
20	8000

A description of the physical symbols

Name	Description
Е	The normal elasticity modulus
r	Density
l	Coefficient of thermal conductivity
R	UD. the resistivity

Technological properties

Name	The value
Weldability	steel is good welded by manual and automatic arc and gas welding. For manual welding it is recommended to use electrodes EA-400/10U, and VAW-13, providing resistance of welded joints to intergranular corrosion. For automatic welding using wire SV-04Х19Н11 and SV-06Х19Н10М3Т in combination with fluxes an-26, ANF-14, ANF-6. For joints of NPP equipment recommended automatic arc welding auto-crimp and manual arc welding with coated electrodes.
The temperature of forging	Start - 1180 °C, the end - 850 °C. the Cooling stacks on the air.
Features of heat treatment	Products hromonikelevoj steel stabilized with titanium, to remove residual stresses and prevent stress corrosion cracking may be subjected to heat treatment according to the requirement stipulated in the draft mode which should be agreed with specialized organization. Steel products are subjected to hardening in order to improve the overall corrosion resistance and ductility, to eliminate the tendency to intergranular corrosion. Hardening is carried out according to mode: heating to 1050-1100 °C, cooling in water or air. The holding time at the heating for hardening to products with a wall thickness up to 10 mm - 30 min, over 10 mm - 20 min + 1 min per 1 mm maximum thickness. Products with wall thickness up to 10 mm is to be cooled in the air, more than 10 mm in water. Welded parts of complex configuration in order to avoid the leash is to be cooled in the air. To give steel the greatest plasticity and the elimination of the structure of the Sigma phase quenching is recommended when heated to the upper limit. Heat treatment nesvorny products to relieve internal stresses and prevent stress corrosion cracking should be carried out in the following mode: heating up to 900±10°C, exposure time of 2-3 h, air cooling. Welded components manufactured from steel hromonikelevoj with the use of unregulated electrodes, to remove residual stresses and prevent stress corrosion cracking should be subjected to heat treatment regime: heating to a 1020-1060 °C, exposure 2 h, air cooling. Products for welded low carbon pure austenitic electrodes, heat-treated to relieve residual stresses and prevent stress corrosion cracking should be carried out according to mode: heating to a 1020-1060 °C, exposure 2 h, cooling with the furnace to 300 °C, then in air. Products, welded electrodes, stabilized by niobium, should be termoobrabotki to relieve residual stresses and prevent stress corrosion cracking according to the mode: heating up to 1100-1140 °C, exposure 2 h, cooling with the furnace to 300 °C, then in air.