Steel 16KH18N12S4TJUL (ЭИ654ЛК)

Designation

Name The value
Designation GOST Cyrillic 16Х18Н12С4ТЮЛ
Designation GOST Latin 16X18H12C4TJuL
Transliteration 16H18N12S4TYuL
By chemical elements 16Cr18Н12С4TiAl
Name The value
Designation GOST Cyrillic ЭИ654ЛК
Designation GOST Latin EI654LK
Transliteration EhI654LK
By chemical elements -

Description

16KH18N12S4TJUL steel is used: for the manufacture of castings, and a molten-welded components operating in corrosive environments, in particular concentrated nitric acid at temperatures up to +105 °C; casting of the 3rd group of parts of valves and actuators to it, working in concentrated nitric acid at temperatures up to +80 °C and in less aggressive environments when the working environment temperature from -70 to +300 °C without limitation of the rated working pressure.

Note

Steel corrosion resistant austenitic-ferritic class.

Standards

Name Code Standards
Castings with special properties (iron and steel) В83 GOST 2176-77
Steel castings В82 GOST 977-88, OST 26-07-402-83, OST 3-4365-79, ST ЦКБА 014-2004

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu Al Ti
GOST 977-88 0.13-0.19 ≤0.03 ≤0.03 0.5-1 17-19 3.8-4.5 11-13 Rest - 0.13-0.35 0.4-0.7
GOST 2176-77 0.13-0.19 ≤0.03 ≤0.03 0.5-1 17-19 3.8-4.5 11-13 Rest ≤0.3 0.13-0.35 0.4-0.7
Fe is the basis.
According to GOST 2176-77 the chemical composition is given for steel grade 16H18N12S4TYL (EI654LK). Deviations from the norms of chemical composition are allowed: for carbon ± 0.020%; for silicon ± 0.10%; on manganese, copper, chromium and nickel ± 0.10% each; by titanium and tungsten ± 0.050% each; by vanadium, molybdenum and niobium ± 0.020% each.

Mechanical properties

Section, mm sT|s0,2, MPa σU, MPa d5, % y, % KCU, kJ/m2
Casting. Quenching in water from 1150-1200 °C
100 ≥245 ≥491 ≥15 ≥30 ≥275

Description mechanical marks

Name Description
sT|s0,2 Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σU Limit short-term strength
d5 Elongation after rupture
y The relative narrowing
KCU Toughness