13Г1СБ steel is used: for the manufacture of electrowelded pryamoshovny pipes of strength group К58 for construction of gas pipelines, oil pipelines and oil product pipelines.

Standards

Name	Code	Standards
Sheets and strips	В33	TU 14-1-3636-96, TU 14-1-3636-83
Steel pipes and fittings to them	В62	TU 14-3-1573-96, TU У 27.2-00191135-016-2007

Chemical composition

Standard	C	S	P	Mn	Cr	Si	Ni	Fe	Cu	N	Al	Ti	Nb
TU 14-3-1573-96	0.12-0.15	≤0.007	≤0.025	1.3-1.6	≤0.3	0.4-0.6	≤0.3	Rest	≤0.3	≤0.012	0.02-0.05	0.015-0.035	≤0.045

Fe is the basis.
According to TU 14-3-1573-96 chemical composition is given for steel grade 13G1SB-U. Carbon equivalent of Se ≤ 0.43%. In steel, the total mass fraction of residual chromium, nickel and copper should not exceed 0.60%. It is allowed to introduce into the steel a technological additive silicocalcium or rare-earth materials (REM) at the rate of 0.5-2.0 kg per 1 ton of steel. In the steel 13G1SB-U, the mass fraction of vanadium is allowed up to 0.040%.

Mechanical properties

Section, mm	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %	KCU, kJ/m²
Longitudinal electric-welded pipes of oil and gas as delivered at TU 14-3-1573-96 (13Г1СБ; samples of a cross; in the column cross section - outer diameter. wall thickness; in the graph the value is KCU KCU-60 °C)
530, 630, 720 (12-15)	≥470	≥570	≥20	≥294
530, 630, 720 (>15)	≥470	≥570	≥20	≥392
820, 1020 (12-15)	≥470	≥570	≥20	≥294
820, 1020 (>15)	≥470	≥570	≥20	≥392

Description mechanical marks

Name	Description
s_T\|s_0,2	Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σ_U	Limit short-term strength
d₅	Elongation after rupture
KCU	Toughness

Steel 13Г1СБ (13Г1СБ -)

Designation

Description

Standards

Chemical composition

Mechanical properties

Description mechanical marks

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