Steel 09KH14N16B (ЭИ694)
Designation
| Name |
The value |
| Designation GOST Cyrillic |
09Х14Н16Б |
| Designation GOST Latin |
09X14H16B |
| Transliteration |
09H14N16B |
| The chemical elements |
09Cr14Н16Nb |
| Name |
The value |
| Designation GOST Cyrillic |
ЭИ694 |
| Designation GOST Latin |
EI694 |
| Transliteration |
EhI694 |
| The chemical elements |
- |
Description
09KH14N16B steel is used: for the manufacture of pipes of superheaters and pipelines installations of ultra-high pressure.
Note
Steel heat-resistant austenitic class.
The recommended maximum operating temperature for a long time +650 °C. the Temperature 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 14-11-245-88 |
| Bulls. Blanks. Slabs |
В31 |
OST 3-1686-90 |
| Metal forming. Forgings |
В03 |
ST ЦКБА 010-2004 |
| Thermal and thermochemical treatment of metals |
В04 |
ST ЦКБА 016-2005 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Cu |
V |
B |
Ti |
Mo |
Nb |
W |
Ce |
| GOST 5632-72 |
0.07-0.12 |
0.02 |
≤0.035 |
1-2 |
13-15 |
≤0.6 |
14-17 |
The rest |
≤0.3 |
≤0.2 |
≤0.005 |
≤0.2 |
≤0.3 |
0.9-1.3 |
≤0.2 |
≤0.02 |
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 1110-1130 °C (aging of 1.0 to 1.5 min/mm of maximum cross section but not less than 0.5 h) |
| ≤60 |
≥196 |
≥490 |
≥35 |
≥50 |
131-156 |
| Bars hot rolled and forged according to GOST 5949-75. Annealing in air from 1110-1130 °C |
|
≥196 |
≥490 |
≥35 |
≥50 |
- |
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 |
l, Вт/(м · °С) |
R, НОм · м |
a, 10-6 1/°С |
| 20 |
7940 |
159 |
774 |
- |
| 100 |
- |
- |
- |
152 |
| 200 |
- |
- |
- |
165 |
| 300 |
- |
- |
- |
171 |
| 400 |
- |
- |
- |
1755 |
| 500 |
- |
- |
- |
1796 |
| 600 |
- |
- |
- |
1841 |
| 700 |
- |
- |
- |
1891 |
| 800 |
- |
- |
- |
206 |
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 |
In the case of welding electrodes type e-08Х19Н10Г2МБ (stamps EA 898/21 B, etc.) to relieve residual stresses in welded assemblies: a) working at 350 °C and above; b) operating at temperatures above 350 °C, if the hardening is impractical to apply a stabilizing annealing at 850-920 °C (extract after heating the batch for at least 2 hours). To improve the overall corrosion resistance relieve residual stresses in welded assemblies used annealing welded assemblies at the air 1110-1130 °C. |
