Steel 01Х25М2Т (ЧС78)

Designation

Name The value
Designation GOST Cyrillic 01Х25М2Т
Designation GOST Latin 01X25M2T
Transliteration 01H25M2T
By chemical elements 01Cr25Mo2Ti
Name The value
Designation GOST Cyrillic ЧС78
Designation GOST Latin ChC78
Transliteration ChS78
By chemical elements ZrС78

Description

01Х25М2Т steel is used: for the manufacture of tubes of heat exchangers petrochemical equipment, parts and equipment, production of caustic soda, chlorine, petroleum refining and pulp and paper promyshlennosti operating temperature up to +300 °C; the welding wire.

Standards

Name Code Standards
Blanks. Of the workpiece. Slabs В31 TU 14-1-3547-83
Sheets and strips В33 TU 14-1-3622-83
Welding and cutting metals. Soldering, riveting В05 TU 14-1-3996-85
Steel pipes and fittings to them В62 TU 14-3-1275-83

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu N Ti Mo
TU 14-1-3547-83 ≤0.01 ≤0.015 ≤0.015 ≤0.7 24-26 ≤0.5 ≤0.4 Rest ≤0.15 ≤0.01 0.15-0.35 1.8-2.5
Fe is the basis.
According to TU 14-1-3547-83, the chemical composition is given for steel grade 01Х25М2Т-ВИ (ЧС78-ВИ).

Mechanical properties

Section, mm sT|s0,2, MPa σU, MPa d5, %
Pipe seamless in the delivery state after quenching on the other 14-3-1275-83 (DH = 25-75 mm, wall 2-3 mm)
≥225 ≥400 ≥25

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
d5 Elongation after rupture