Steel 15KH6SJU (ЭИ428)
Designation
| Name |
The value |
| Designation GOST Cyrillic |
15Х6СЮ |
| Designation GOST Latin |
15X6CJu |
| Transliteration |
15H6SYu |
| The chemical elements |
15Cr6СAl |
| Name |
The value |
| Designation GOST Cyrillic |
ЭИ428 |
| Designation GOST Latin |
EI428 |
| Transliteration |
EhI428 |
| The chemical elements |
- |
Description
15KH6SJU steel is used: for the manufacture of parts of boilers and pipes.
Note
Temperature intense scaling in air +800 °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 |
≤0.03 |
≤0.5 |
5.5-7 |
1.2-1.8 |
≤0.6 |
The rest |
0.3 |
0.7-1.1 |
≤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 750-780 °C, cooling in air or in oil |
|
≥245 |
≥440 |
≥20 |
≥40 |
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 |
