Steel 20Х21Н46В8Л

Designation

Name The value
Designation GOST Cyrillic 20Х21Н46В8Л
Designation GOST Latin 20X21H46B8L
Transliteration 20H21N46V8L
By chemical elements 20Cr21Н46W8

Description

20Х21Н46В8Л steel is used: for the manufacture of castings of aircraft engine parts; working and nozzle blades of gas turbines.

Note

Heat resistant up to +1000 °C heat-resistant up to +800 °C austenitic steel.

Standards

Name Code Standards
Castings with special properties (iron and steel) В83 GOST 2176-77

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu B W
GOST 2176-77 0.1-0.25 ≤0.035 ≤0.04 0.3-0.8 19-22 0.2-0.8 43-48 Rest ≤0.3 0.06 7-9
Ni is the basis.
According to GOST 2176-77, the chemical composition is given for steel grade 20Х21Н46В8Л. Boron is introduced into the metal by calculation. 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

σU, MPa d5, % y, % KCU, kJ/m2
Casting. Aging at 900 °C (maintained for 5 h), air cooling
≥441 ≥6 ≥8 ≥294

Description mechanical marks

Name Description
σU Limit short-term strength
d5 Elongation after rupture
y The relative narrowing
KCU Toughness