σU
MPa
σY
MPa

20F (20FA)

for the manufacture of billets and seamless pipes of hot-OIL & GAS enhanced corrosion resistance and cold resistance

Classification

Country	Section	Category
Country	Section	Category
CIS, Russia, Ukraine	Structural steel	Alloyed structural steel

Chemical composition

Standard	Si, %	Mn, %	Cr, %	Cu, %	Ni, %	V, %	Al, %	P, %	C, %	S, %	N, %
Standard	Si, %	Mn, %	Cr, %	Cu, %	Ni, %	V, %	Al, %	P, %	C, %	S, %	N, %
TU 1468-018-48124013 - 2003	0.17–0.37	0.35–0.65	< 0.25	< 0.25	< 0.25	0.04–0.06	0.02–0.05	< 0.018	0.17–0.24	< 0.015	< 0.008

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Mechanical properties at 20 °C

Rolling	Standard	Size, mm	Tension	Classifiers	$\sigma _{U}$ , $MPa$	$\sigma_{Y}$ , $MPa$	d5, %	Treatment
Rolling	Standard	Size, mm	Tension	Classifiers	$\sigma _{U}$ , $MPa$	$\sigma_{Y}$ , $MPa$	d5, %	Treatment
Workpiece	TU 1468-018-48124013 - 2003				510	353	23

Standards

Standard	Description
Standard	Description
TU 1468-018-48124013 - 2003

Description of chemical elements

Element	Units of measurement	Description
Element	Units of measurement	Description
Si	%	Silicon
Mn	%	Manganese
Cr	%	Chrome
Cu	%	Copper
Ni	%	Nickel
V	%	Vanadium
Al	%	Aluminium
P	%	Phosphorus
C	%	Carbon
S	%	Sulfur
N	%	Nitrogen

Description of mechanical properties

Parameter	Units of measurement	Description
Parameter	Units of measurement	Description
d5	%	Elongation at break
$\sigma_{Y}$	$MPa$	Yield strength
$\sigma _{U}$	$MPa$	Ultimate tensile strength