Steel 15KH23N18L

Designation

Name The value
Designation GOST Cyrillic 15Х23Н18Л
Designation GOST Latin 15X23H18L
Transliteration 15H23N18L
By chemical elements 15Cr23Н18

Description

15KH23N18L steel is used: for the manufacture of castings of parts of installations for the chemical, oil and automotive industries, gas pipelines, combustion chamber nozzle apparatus; parts, furnace fittings, requiring high mechanical strength (can be applied to the heating resistance elements).

Note

Austenitic steel, heat-resistant up to +900 °C.
At a temperature of 600−800 °C 15KH23N18L steel is prone to embrittlement due to the formation of Sigma phase.

Standards

Name Code Standards
Castings with special properties (iron and steel) В83 GOST 2176-77
Steel castings В82 GOST 977-88, OST 24.920.01-80

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu
GOST 977-88 0.1-0.2 ≤0.03 ≤0.03 1-2 22-25 0.2-1 17-20 Rest -
GOST 2176-77 0.1-0.2 ≤0.03 ≤0.03 1-2 22-25 0.2-1 17-20 Rest ≤0.3
Fe is the basis.
According to GOST 2176-77 the chemical composition is given for steel grade 15H23N18L. 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 1050-1100 °C
100 ≥294 ≥540 ≥25 ≥30 ≥981

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