Steel 08KH15N24V4TR (ЭП164)
Designation
| Name |
The value |
| Designation GOST Cyrillic |
08Х15Н24В4ТР |
| Designation GOST Latin |
08X15H24B4TP |
| Transliteration |
08H15N24V4TR |
| The chemical elements |
08Cr15Н24W4TiB |
| Name |
The value |
| Designation GOST Cyrillic |
ЭП164 |
| Designation GOST Latin |
EP164 |
| Transliteration |
EhP164 |
| The chemical elements |
- |
Description
08KH15N24V4TR steel is used: for the manufacture of blades and vanes, fasteners, discs of gas turbines with long life at temperatures of 650−700 °C; blanks, parts and welded Assembly of pipe fittings with the use of heat treatment.
Note
Steel complexly alloyed heat-resistant austenitic class.
The recommended maximum operating temperature for a very long time +700 °C.
The temperature of beginning of intensive scaling in air +900 °C.
Standards
| Name |
Code |
Standards |
| Classification, nomenclature and general norms |
В30 |
GOST 5632-72 |
| Sectional and shaped rolling |
В32 |
GOST 5949-75, TU 14-1-1139-74, TU 14-11-245-88 |
| Bulls. Blanks. Slabs |
В31 |
OST 3-1686-90 |
| Metal forming. Forgings |
В03 |
ST ЦКБА 010-2004 |
| 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 |
B |
Ti |
Mo |
W |
Ce |
| GOST 5632-72 |
≤0.08 |
≤0.02 |
≤0.035 |
0.5-1 |
14-16 |
≤0.6 |
22-25 |
The rest |
≤0.3 |
≤0.2 |
≤0.005 |
1.4-1.8 |
≤0.3 |
4-5 |
≤0.03 |
| TU 14-1-1139-74 |
≤0.08 |
≤0.02 |
≤0.035 |
0.5-1 |
14-16 |
≤0.6 |
22-25 |
The rest |
≤0.3 |
≤0.2 |
≤0.005 |
1.4-1.8 |
≤0.3 |
4-5 |
≤0.03 |
Fe is the basis.
According to TU 14-1-1139-74, the settlement boron up to 0.020% is allowed at the request of the customer.
Mechanical characteristics
| Section, mm |
sT|s0,2, MPa |
σB, MPa |
d5, % |
y, % |
kJ/m2, кДж/м2 |
Brinell hardness number, MPa |
| Blank pieces of pipe fittings according to ST CKBA 016-2005. Aging at 690-710 °C (16 h exposure) |
| ≤200 |
≥490 |
≥735 |
≥18 |
≥35 |
≥784 |
≥229 |
| Bars on the other 14-1-1139-74. Vacation at 670-730 °C, air cooling. Allowed to leave to subject the workpiece to hardening in air, 1000-1100°C. |
| - |
≥440 |
≥740 |
≥18 |
≥35 |
≥785 |
- |
| Bars hot rolled and forged at STP 26.260.484-2004. Annealing in air 1130-1150 °C + Aging at 700 °C, exposure time 16 h, air cooling |
|
≥440 |
≥730 |
≥18 |
≥35 |
- |
- |
| Bars on the other 14-1-1139-74. Vacation at 670-730 °C, air cooling. Allowed to leave to subject the workpiece to hardening in air, 1000-1100°C. |
| - |
≥392 |
≥590 |
≥10 |
≥16 |
- |
- |
| Rolled steel. Annealing in air 1130-1150 °C (exposure 2 hours) + Aging at 730-750 °C (aging 16 h), air cooling |
|
≥442 |
≥736 |
≥18 |
≥35 |
≥784 |
- |
| Rolled steel. Vacation at 700°C (aging 16 h), air cooling |
|
≥490 |
≥736 |
≥20 |
≥30 |
≥1176 |
- |
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 |
| kJ/m2 |
Toughness |
Physical characteristics
| Temperature |
Е, ГПа |
r, кг/м3 |
l, Вт/(м · °С) |
a, 10-6 1/°С |
| 20 |
223 |
8230 |
122 |
- |
| 100 |
215 |
- |
- |
145 |
| 200 |
209 |
- |
- |
155 |
| 300 |
200 |
- |
- |
163 |
| 400 |
191 |
- |
- |
168 |
| 500 |
182 |
- |
- |
172 |
| 650 |
169 |
- |
- |
175 |
| 700 |
165 |
- |
- |
178 |
| 750 |
161 |
- |
- |
179 |
| 800 |
156 |
- |
- |
- |
| 600 |
- |
- |
- |
174 |
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 |
Difficult weldability of the steel. |
| Features of heat treatment |
Steel products 08KH15N24V4TR for equipment chemical industry preferably termoobrabotki regime: hardening with 1130-1150 °C With air cooling and aging at 700 °C duration 16 hours with air cooling. |
