Steel 08KH17N15M3T (ЭИ580)
Designation
| Name |
The value |
| Designation GOST Cyrillic |
08Х17Н15М3Т |
| Designation GOST Latin |
08X17H15M3T |
| Transliteration |
08H17N15M3T |
| The chemical elements |
08Cr17Н15Mo3Ti |
| Name |
The value |
| Designation GOST Cyrillic |
ЭИ580 |
| Designation GOST Latin |
EI580 |
| Transliteration |
EhI580 |
| The chemical elements |
- |
Description
08KH17N15M3T steel is used: for the manufacture of welded structures operating under conditions of boiling phosphoric, sulfuric, 10% acetic acid and sulfuric acid media intended for long-term service at operating temperatures to +600 °C; the urea synthesis urea; as a cladding layer in the manufacture of hot-rolled dual-layer corrosion-resistant sheets.
Note
Steel romancelatina corrosion resistant austenitic class.
Steel 08KH17N15M3T contains practically no ferrite phase, has higher resistance to pitting than steel of the brand 10X17H13M2T in environments containing chloride ions.
Standards
| Name |
Code |
Standards |
| Metal forming. Forgings |
В03 |
GOST 25054-81, OST 26-01-135-81, TU 14-1-1530-75, ST ЦКБА 010-2004 |
| Sheets and stripes |
В33 |
GOST 5582-75, GOST 7350-77, GOST 10885-85, TU 14-132-175-89, TU 14-1-4364-87, TU 14-1-4212-87 |
| Classification, nomenclature and general norms |
В30 |
GOST 5632-72 |
| Sectional and shaped rolling |
В32 |
GOST 5949-75, TU 14-11-245-88 |
| Pipes steel and connecting parts to them |
В62 |
GOST 9940-81, GOST 9941-81, TU 14-3-504-76, TU 14-3-1654-89 |
| Bulls. Blanks. Slabs |
В31 |
OST 3-1686-90, TU 14-1-565-84, TU 14-136-274-79 |
| Thermal and thermochemical treatment of metals |
В04 |
STP 26.260.484-2004, ST ЦКБА 016-2005 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Cu |
V |
Ti |
Mo |
W |
| GOST 5632-72 |
≤0.08 |
≤0.02 |
≤0.035 |
≤2 |
16-18 |
≤0.8 |
14-16 |
The rest |
≤0.3 |
≤0.2 |
0.3-0.6 |
3-4 |
≤0.2 |
Fe is the basis.
Mechanical characteristics
| Section, mm |
sT|s0,2, MPa |
σB, MPa |
d5, % |
y, % |
Brinell hardness number, MPa |
| Blank pieces of pipe fittings according to ST CKBA 016-2005. Quenching in water or air with 1020-1100 °C (aging of 1.0 to 1.5 min/mm of maximum cross section but not less than 0.5 h) |
| ≤500 |
≥196 |
≥490 |
≥35 |
≥45 |
121-200 |
| Hot rolled sheet (of 1.5-3.9 mm) and cold rolled (0,7-3,9 mm) steel according to GOST 5582-75. Quenching in water or air from 1050-1080 °C |
| - |
≥205 |
≥530 |
≥35 |
- |
- |
| Hot rolled sheet (4,0-25,0 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 GOST 5949-75 + Forgings. Quenching in air, oil or water from 1050-1100 °C |
|
≥196 |
≥490 |
≥35 |
≥45 |
- |
| Bars hot rolled and forged at STP 26.260.484-2004. Quenching in water or air from 1050-1100 °C |
|
≥200 |
≥500 |
≥35 |
≥40 |
- |
| 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 |
≥520 |
≥30 |
≥40 |
- |
| Pipe. Annealing in air from 1050-1100 °C |
| - |
- |
≥510 |
≥35 |
- |
- |
| - |
- |
≥549 |
≥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 |
Technological properties
| Name |
The value |
| Weldability |
Without restrictions. To relieve residual stresses, welding in the event welding electrodes type e-07Х19Н1 1М3Г2Ф (grade EA-400/10U, EA-400 S, St. 04Х19Н11МЗ wire, etc.), welded assemblies are subjected to tempering in air 970-1020 °C (aged for at least 2.5 minutes/mm of maximum wall thickness, but not less than 1 hour). In the case of welding wire SV 04Х19Н11М3 or electrodes type e-07Х19Н11М3Г2Ф (grade EA-400/10U, EA-400/10T, wire St 04Х19Н11М3, etc.) applied annealing in air from 950-1050 °C (aged for at least 2.5 minutes/mm of maximum wall thickness, but not less than 1 hour). |
| 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. |
