Steel 55KH18G14S2TL

Designation

Name The value
Designation GOST Cyrillic 55Х18Г14С2ТЛ
Designation GOST Latin 55X18G14C2TL
Transliteration 55H18G14S2TL
By chemical elements 55Cr18Mn14С2Ti

Description

55KH18G14S2TL steel is used: for the manufacture of castings of parts operating at high temperature and pressure (compressors and blades of the nozzle apparatus, furnace conveyors, screws, fasteners, etc.); hinged cast chains for rotary kilns, consisting of high-temperature or heat-resistant parts applied in the middle area when the temperature of the gas stream from 500−950 °C.

Note

Steel corrosion resistant, heat resistant up to +950 °C austenitic.
Steel is not resistant to exposure to sulfuric acid.

Standards

Name Code Standards
Castings with special properties (iron and steel) В83 GOST 2176-77, TU 4112-07507311-010-02
Steel castings В82 GOST 977-88

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu Ti
GOST 977-88 0.45-0.65 ≤0.03 ≤0.04 12-16 16-19 1.5-2.5 - Rest - 0.1-0.3
GOST 2176-77 0.45-0.65 ≤0.03 ≤0.04 12-16 16-19 1.5-2.5 ≤0.5 Rest ≤0.3 0.1-0.3
Fe is the basis.
According to GOST 2176-77 the chemical composition is given for steel grade 55Kh18G14S2TL. 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 σU, MPa d5, % KCU, kJ/m2
Casting. Without heat treatment
100 ≥638 ≥6 ≥147

Description mechanical marks

Name Description
σU Limit short-term strength
d5 Elongation after rupture
KCU Toughness