09ГНФБ steel is used: for the production of billets, sheet ingots used for the production of parts and welded longitudinal pipes of the main gas and oil pipelines strength group К56.

Standards

Name	Code	Standards
Sheets and strips	В33	TU 14-1-5386-99
Steel pipes and fittings to them	В62	TU 14-3-1698-2000, TU 14-158-153-05, TU 14-158-146-2004

Chemical composition

Standard	C	S	P	Mn	Si	Ni	Fe	N	Al	V	Nb
TU 14-1-5386-99	0.07-0.11	≤0.01	≤0.02	0.9-1.2	0.2-0.4	0.15-0.3	Rest	-	0.02-0.06	0.03-0.06	0.03-0.06
TU 14-158-146-2004	0.07-0.11	≤0.01	≤0.02	0.9-1.2	0.2-0.4	-	Rest	≤0.01	-	0.03-0.06	0.03-0.06

Fe is the basis.
According to TU 14-158-146-2004 the chemical composition is given for steel 09ГНФБ-ПЛ on a ladle sample for the 1st level of quality of pipes. For pipes of the 2nd level of quality in the ladle sample, the mass fraction of sulfur is ≤ 0.010%, phosphorus ≤ 0.015%, nitrogen ≤ 0.006%.

Mechanical properties

Section, mm	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %	KCU, kJ/m²
Longitudinal electric-welded pipes in the state of delivery on the other 14-3-1698-2000
	380-480	550-670	≥20	-
The strip 530-1020; 1220 mm in the delivery state on the other 14-1-5386-99 (KCU-60 °C)
	470-570	530-630	≥22	≥590

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 09ГНФБ

Designation

Description

Standards

Chemical composition

Mechanical properties

Description mechanical marks

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