Steel 05Г1Б

Designation

Name The value
Designation GOST Cyrillic 05Г1Б
Designation GOST Latin 05G1B
Transliteration 05G1B
By chemical elements 05Mn1Nb

Description

05Г1Б steel is used: for the manufacture of electrowelded pryamoshovny pipes of strength group K54 for the construction of gas pipelines, oil pipelines and oil product pipelines.

Standards

Name Code Standards
Steel pipes and fittings to them В62 TU 14-158-146-2004

Chemical composition

Standard C S P Mn Si Fe N Nb
TU 14-158-146-2004 ≤0.07 ≤0.005 ≤0.02 1.2-1.4 0.17-0.35 Rest ≤0.01 0.05-0.08
Fe is the basis.
According to TU 14-158-146-2004 the chemical composition is given for steel grade 05G1B for a ladle sample for the 1st level of the quality of the pipes. For pipes of the 2nd level of quality in the ladle sample, the mass fraction of phosphorus is ≤ 0.015%.

Mechanical properties

Section, mm sT|s0,2, MPa σU, MPa d5, %
Longitudinal electric-welded pipes of oil and gas in the state of delivery on the other 14-158-146-2004 (samples transverse; column cross section - outer diameter. wall thickness)
530, 720, 820 (7-12) ≥390 ≥530 ≥20

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

Technological properties

Name The value
Weldability Welded without any restrictions.
Microstructure Ferritic-banana structure.