σU
MPa
σY
MPa
ϵL

A

Classification

Country	Section	Category
Country	Section	Category
CIS, Russia, Ukraine	Steels for special purposes	Steels for shipbuilding

Chemical composition

Standard	Fe, %	Si, %	Mn, %	As, %	P, %	C, %	S, %	N, %
Standard	Fe, %	Si, %	Mn, %	As, %	P, %	C, %	S, %	N, %
GOST 5521-93	< 98	0.15–0.37	0.4–1	< 0.08	< 0.04	< 0.22	< 0.04	< 0.008

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Mechanical properties at 20 °C

Rolling	Standard	Size, mm	Tension	Classifiers	$\sigma _{U}$ , $MPa$	$\sigma_{Y}$ , $MPa$	$\epsilon_L$ , %	d5, %	Treatment
Rolling	Standard	Size, mm	Tension	Classifiers	$\sigma _{U}$ , $MPa$	$\sigma_{Y}$ , $MPa$	$\epsilon_L$ , %	d5, %	Treatment
Hire	GOST 5521-93				400–490	235	22
Hire	GOST 52927-2008				400–520	232		22

Standards

Standard	Description
Standard	Description
GOST 5521-93

Description of chemical elements

Element	Units of measurement	Description
Element	Units of measurement	Description
Fe	%	Iron
Si	%	Silicon
Mn	%	Manganese
As	%	Arsenic
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
$\epsilon_L$	%	Elongation at break (longitudinal)