Steel 20KHGSFL

Designation

Name The value
Designation GOST Cyrillic 20ХГСФЛ
Designation GOST Latin 20XGCFL
Transliteration 20HGSFL
By chemical elements 20CrMnСV

Description

20KHGSFL steel is used: for the manufacture of cast, welded-cast machine components in North; the hydraulic ducts; responsible welded-cast structures of large sections of career and draglines.

Note

Cold-resistant steel.

Standards

Name Code Standards
Castings with special properties (iron and steel) В83 GOST 21357-87
Steel castings В82 TU 24-1-12-181-75

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu V
GOST 21357-87 0.14-0.22 ≤0.02 ≤0.02 0.9-1.3 0.3-0.6 0.5-0.7 ≤0.4 Rest ≤0.3 0.07-0.13
Fe is the basis.

Mechanical properties

sT|s0,2, MPa σU, MPa d y, % KCU, kJ/m2
Casting. Quenching in water from 900-920 °C + vacation at 650-670 °C, air cooling (KCU-60)
≥450 ≥600 ≥14 ≥25 ≥3
Casting. Normalization at 900-920 °C + vacation at 630-650 °C, air cooling (KCU-60)
≥320 ≥500 ≥18 ≥30 ≥3

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

Technological properties

Name The value
Склонность к отпускной хрупкости inclined