Steel 15KH18SJU (ЭИ484)
Designation
| Name |
The value |
| Designation GOST Cyrillic |
15Х18СЮ |
| Designation GOST Latin |
15X18CJu |
| Transliteration |
15H18SYu |
| The chemical elements |
15Cr18СAl |
| Name |
The value |
| Designation GOST Cyrillic |
ЭИ484 |
| Designation GOST Latin |
EI484 |
| Transliteration |
EhI484 |
| The chemical elements |
- |
Description
15KH18SJU steel is used: for the manufacture of parts and tubes of pyrolysis plants, equipment.
Note
Heat-resistant steel of the ferritic class.
Temperature intense scaling in air +1050 °C.
Stable in sulfur-containing environments.
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 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Cu |
Al |
V |
Ti |
Mo |
W |
| GOST 5632-72 |
≤0.15 |
≤0.025 |
≤0.035 |
≤0.8 |
17-20 |
1-1.5 |
≤0.6 |
The rest |
≤0.3 |
0.7-1.2 |
≤0.2 |
≤0.2 |
≤0.3 |
≤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 at 800-850 °C, cooling in air or in water |
|
≥295 |
≥490 |
≥20 |
≥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 |
