Steel 08KH17N13M2T (0Х17Н13М2Т; ЭИ448)
Designation
| Name |
The value |
| Designation GOST Cyrillic |
08Х17Н13М2Т |
| Designation GOST Latin |
08X17H13M2T |
| Transliteration |
08H17N13M2T |
| The chemical elements |
08Cr17Н13Mo2Ti |
| Name |
The value |
| Designation GOST Cyrillic |
0Х17Н13М2Т |
| Designation GOST Latin |
0X17H13M2T |
| Transliteration |
0H17N13M2T |
| The chemical elements |
0Cr17Н13Mo2Ti |
| Name |
The value |
| Designation GOST Cyrillic |
ЭИ448 |
| Designation GOST Latin |
EI448 |
| Transliteration |
EhI448 |
| The 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 |
| Pipes steel and connecting parts to them |
В62 |
GOST 11068-81, TU 14-159-165-87, TU 14-158-135-2003, TU 14-158-137-2003 |
| Sectional and shaped rolling |
В22 |
GOST 1133-71, GOST 2590-2006, GOST 2591-2006, GOST 2879-2006 |
| Sheets and stripes |
В23 |
GOST 19903-74, GOST 19904-90, GOST 103-2006, GOST 19903-90 |
| Sheets and stripes |
В33 |
GOST 4405-75, GOST 7350-77, TU 14-1-394-72, TU 14-1-4364-87 |
| Classification, nomenclature and general norms |
В30 |
GOST 5632-72 |
| Sectional and shaped rolling |
В32 |
GOST 5949-75, GOST 7417-75, GOST 8559-75, GOST 8560-78, GOST 14955-77, TU 14-11-245-88 |
| Bulls. Blanks. Slabs |
В31 |
OST 3-1686-90, TU 14-1-790-73 |
| Welding and cutting of 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 |
The 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 |
The 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 characteristics
| Section, mm |
sT|s0,2, MPa |
σB, 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 |
| 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 |
| y |
The relative narrowing |
Physical characteristics
| Temperature |
r, кг/м3 |
| 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. |
| Forging temperature |
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. |
