40HN2SMA-VD (EI643-VD, EI-643-VD)

For the production of seamless pipes and parts of chemical engineering and special equipment.

Classification

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

Chemical composition

Standard	Fe, %	Si, %	Mn, %	Cr, %	Ni, %	P, %	C, %	S, %	Mo, %
Standard	Fe, %	Si, %	Mn, %	Cr, %	Ni, %	P, %	C, %	S, %	Mo, %
TU 14-3-674 - 78	94.18–95.54	0.9–1.2	0.25–0.5	0.8–1.1	1.8–2.1	< 0.025	0.36–0.44	< 0.005	0.35–0.45

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Mechanical properties at 20 °C

Rolling	Standard	Size, mm	Tension	Classifiers	$\sigma _{U}$ , $MPa$	$\psi$ , %	d5, %	Treatment
Rolling	Standard	Size, mm	Tension	Classifiers	$\sigma _{U}$ , $MPa$	$\psi$ , %	d5, %	Treatment
Alloy	TU 1-92-156-90				1860	35	6	Hardening 900oC, oil, Release 200 - 260oC, air,

Standards

Standard	Description
Standard	Description
TU 14-3-674 - 78

Description of chemical elements

Element	Units of measurement	Description
Element	Units of measurement	Description
Fe	%	Iron
Si	%	Silicon
Mn	%	Manganese
Cr	%	Chrome
Ni	%	Nickel
P	%	Phosphorus
C	%	Carbon
S	%	Sulfur
Mo	%	Molybdenum

Description of mechanical properties

Parameter	Units of measurement	Description
Parameter	Units of measurement	Description
d5	%	Elongation at break
$\sigma _{U}$	$MPa$	Ultimate tensile strength
$\psi$	%	Reduction in cross section on fracture