Steel 09KH14N19V2BR1 (ЭИ726)
Designation
| Name |
The value |
| Designation GOST Cyrillic |
09Х14Н19В2БР1 |
| Designation GOST Latin |
09X14H19B2BP1 |
| Transliteration |
09H14N19V2BR1 |
| The chemical elements |
09Cr14Н19W2NbB1 |
| Name |
The value |
| Designation GOST Cyrillic |
ЭИ726 |
| Designation GOST Latin |
EI726 |
| Transliteration |
EhI726 |
| The chemical elements |
- |
Description
09KH14N19V2BR1 steel is used: for the manufacture of rotors, disks, turbine blades with a long service life at temperature 650−700 °C.
Note
Steel 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 +850 °C.
Standards
| Name |
Code |
Standards |
| Classification, nomenclature and general norms |
В30 |
GOST 5632-72 |
| Sectional and shaped rolling |
В32 |
GOST 5949-75, TU 14-1-2865-80, TU 14-11-245-88 |
| Bulls. Blanks. Slabs |
В31 |
OST 3-1686-90 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Cu |
V |
B |
Ti |
Mo |
Nb |
W |
Ce |
Y |
| GOST 5632-72 |
0.07-0.12 |
≤0.02 |
≤0.035 |
≤2 |
13-15 |
0.6 |
18-20 |
The rest |
≤0.3 |
≤0.2 |
≤0.03 |
≤0.2 |
≤0.3 |
0.9-1.3 |
2-2.8 |
≤0.02 |
≤0.2 |
Fe is the basis.
Mechanical characteristics
| Section, mm |
sT|s0,2, MPa |
σB, MPa |
d5, % |
y, % |
| Bars hot rolled and forged according to GOST 5949-75. Annealing in air 1120-1140 °C + Vacation at 740-760 °C (maintained for 5 h), air cooling |
|
≥215 |
≥510 |
≥30 |
≥44 |
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 |
Е, ГПа |
r, кг/м3 |
l, Вт/(м · °С) |
a, 10-6 1/°С |
| 20 |
202 |
8120 |
154 |
- |
| 100 |
199 |
- |
163 |
152 |
| 200 |
193 |
- |
163 |
163 |
| 300 |
186 |
- |
18 |
169 |
| 400 |
178 |
- |
192 |
175 |
| 500 |
169 |
- |
213 |
178 |
| 600 |
160 |
- |
234 |
181 |
| 700 |
152 |
- |
251 |
186 |
| 750 |
148 |
- |
- |
- |
| 800 |
- |
- |
276 |
186 |
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. |
