Steel 45Х25Н20С2

Designation

Name The value
Designation GOST Cyrillic 45Х25Н20С2
Designation GOST Latin 45X25H20C2
Transliteration 45H25N20S2
By chemical elements 45Cr25Н20С2

Description

45Х25Н20С2 steel is used: for the manufacture of pipes tsentrobezhnolityh for the manufacture of the coils of the tubular furnace installations production of ammonia, hydrogen, ethylene, carbon disulphide, etc., operating in the temperature range 760−1060 °C and a pressure of 3.92 MPa (40 kgf/cm2).

Standards

Name Code Standards
Steel pipes and fittings to them В62 TU 1333-047-00220302-02

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu As V Ti Mo Zn Sn Pb
TU 1333-047-00220302-02 0.35-0.45 ≤0.03 ≤0.03 1.0005-1.51 24-27 1.8995-2.49 18-21 Rest ≤0.2 ≤0.01 0.0005-0.2 0.0005-0.1 ≤0.5 ≤0.01 ≤0.01 ≤0.01
Fe is the basis.

Mechanical properties

sT|s0,2, MPa σU, MPa d y, %
Tsentrobezhnolityh pipe outer diameter 85-320 mm. Quenching in water or air from 1100-1150 °C
≥245 ≥441 ≥10 ≥10

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