Steel 10KH18N3G3D2L (0Х18Н3Г3Д2Л)

Designation

Name The value
Designation GOST Cyrillic 10Х18Н3Г3Д2Л
Designation GOST Latin 10X18H3G3D2L
Transliteration 10H18N3G3D2L
By chemical elements 10Cr18Н3Mn3Cu2
Name The value
Designation GOST Cyrillic 0Х18Н3Г3Д2Л
Designation GOST Latin 0X18H3G3D2L
Transliteration 0H18N3G3D2L
By chemical elements 0Cr18Н3Mn3Cu2

Description

10KH18N3G3D2L steel is used: for the manufacture of castings of blades and welded cavitation-resistant parts of the working parts of hydraulic turbines, operating at pressures not exceeding 80 l/h cross sections up to 300 mm; casting parts, steam, gas turbines and axial compressors.

Note

Kavitatsionnogo steel, corrosion resistant austenitic-ferritic class. Steel 10KH18N3G3D2L has a high resistance to sand erosion in comparison with steel stamps 10KH12NDL.

Standards

Name Code Standards
Castings with special properties (iron and steel) В83 GOST 2176-77
Steel castings В82 GOST 977-88, TU 108-978-80
Welding and cutting metals. Soldering, riveting В05 RTM 108.020.122-78

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu
GOST 2176-77 ≤0.1 ≤0.03 ≤0.03 2.3-3 17-19 ≤0.6 3-3.5 Rest 1.8-2.2
Fe is the basis.
According to GOST 2176-77, the chemical composition is given for steel grade 10Х18Н3Г3Д2Л (0Х18Н3Г3Д2Л). 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. Normalization at 1070-1100 °C, air cooling + First vacation at 790-810 °C, cooled to 20 °C, + Second vacation at 590-610 °C, air cooling
100 ≥491 ≥687 ≥12 ≥25 ≥294

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

Technological properties

Name The value
Weldability Limited weldability.
Welding defects Welding defects of castings after cutting is usually carried out without heating. Welding defects of manual welding is done with electrodes type e-06Х22Н9 (GOST 10052) brand TSL-33. After welding and repair of defects by welding is applied heat treatment.