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Steel 20ХЛ

Designation

Name The value
Designation GOST Cyrillic 20ХЛ
Designation GOST Latin 20XL
Transliteration 20HL
The chemical elements 20Cr

Description

20ХЛ steel is used: for the manufacture of castings 1, 2, 3 parts of pipe fittings high tensile strength in Northern performance test notch toughness at the operating temperature KCU-50≥200 kJ/m2 (2,0 kgf·m/cm2), the working environment temperature -50 to +450 °C without limitations nominal operating pressure.

Standards

Name Code Standards
Castings, steel В82 OST 26-07-402-83, TU 4112-091-00220302-2006, ST ЦКБА 014-2004

Chemical composition

Standard C S P Mn Cr Si Ni Fe
ST ЦКБА 014-2004 0.15-0.25 ≤0.035 ≤0.04 0.3-1.03 0.51-1.5 0.15-0.62 ≤0.8 The rest
Fe is the basis.

Mechanical characteristics

sT|s0,2, MPa σB, MPa d y, % kJ/m2, кДж/м2
Casting parts of pipe fittings. Normalization at 850-900 °C, air cooling + vacation at 650 °C, air cooling KCU+20/-50
≥250 ≥450 ≥18 ≥30 ≥600/200

Description mechanical marks

Name Description
sT|s0,2 Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σB Limit short-term strength
d Elongation after rupture
y The relative narrowing
kJ/m2 Toughness

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