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Steel 10KH13SJU (ЭИ404)

Designation

Name The value
Designation GOST Cyrillic 10Х13СЮ
Designation GOST Latin 10X13CJu
Transliteration 10H13SYu
The chemical elements 10Cr13СAl
Name The value
Designation GOST Cyrillic ЭИ404
Designation GOST Latin EI404
Transliteration EhI404
The chemical elements -

Description

10KH13SJU steel is used: for the manufacture of valves of automotive engines.

Note

Heat-resistant steel of the ferritic class.
Temperature intense scaling in air +950 °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 0.07-0.12 ≤0.025 ≤0.03 ≤0.8 12-14 1.2-2 ≤0.6 The rest ≤0.3 1-1.8 ≤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, air cooling
≥345 ≥490 ≥15 ≥60

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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