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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

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