Steel 20KH8VL

Designation

Name The value
Designation GOST Cyrillic 20Х8ВЛ
Designation GOST Latin 20X8BL
Transliteration 20H8VL
By chemical elements 20Cr8W

Description

20KH8VL steel is used: for the manufacture of casting parts of valves of oil refining units, furnace doubles, pump casings and other components operating in the hot oil much sulfur environments under pressure at temperatures up to +575 °C.

Note

Corrosion resistant steel heat-resistant martensitic class. Heat-resistant to more aggressive sulfur environments compared to steel stamps 20KH5ML, heat resistance to +600 °C.

Standards

Name Code Standards
Castings with special properties (iron and steel) В83 GOST 2176-77
Steel castings В82 GOST 977-88, TU 26-02-19-75, TU 4112-091-00220302-2006

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu W
GOST 977-88 0.15-0.25 ≤0.035 ≤0.04 0.3-0.5 7.5-9 0.3-0.6 - Rest - 1.25-1.75
GOST 2176-77 0.15-0.25 ≤0.035 ≤0.04 0.3-0.6 7.5-9 0.3-0.6 ≤0.5 Rest ≤0.3 1.25-1.75
Fe is the basis.
According to GOST 2176-77 the chemical composition is given for steel grade 20Х8ВЛ. 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

sT|s0,2, MPa σU, MPa d y, % KCU, kJ/m2
The castings are supplied according to GOST 2176-77
≥392 ≥589 ≥16 ≥30 ≥392

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
d Elongation after rupture
y The relative narrowing
KCU Toughness