N18K4M7TS

For products with high strength with sufficient ductility and toughness, high resistance to small plastic deformations, brittle and fatigue failure, used in mechanical engineering, instrument engineering and tool industry; martensitic-aging steel.

Classification

Country	Section	Category
Country	Section	Category
CIS, Russia, Ukraine	Structural steel	High strength high alloy structural steel

Chemical composition

Standard	Fe, %	Si, %	Co, %	Ti, %	Ni, %	Mo, %
Standard	Fe, %	Si, %	Co, %	Ti, %	Ni, %	Mo, %
GOST 2591-2006	68.5	0.7	4.5	0.6	18	7.7

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Physical characteristics

Temperature, °C	$\rho$ , $\frac{kg}{m^3}$
Temperature, °C	$\rho$ , $\frac{kg}{m^3}$
20	8230

Mechanical properties at 20 °C

Rolling	Standard	Size, mm	Tension	Classifiers	$\sigma _{U}$ , $MPa$	$\sigma_{Y}$ , $MPa$	$\psi$ , %	$KCU\cdot 10^{3}$ , $\frac{J}{m^2}$	d5, %	Treatment
Rolling	Standard	Size, mm	Tension	Classifiers	$\sigma _{U}$ , $MPa$	$\sigma_{Y}$ , $MPa$	$\psi$ , %	$KCU\cdot 10^{3}$ , $\frac{J}{m^2}$	d5, %	Treatment
Alloy	GOST 2591-2006				2180	2060	34	0.35	7	After aging 480-510 ° C

Standards

Standard	Description
Standard	Description
GOST 2591-2006	GOST 2591-2006

Description of chemical elements

Element	Units of measurement	Description
Element	Units of measurement	Description
Fe	%	Iron
Si	%	Silicon
Co	%	Cobalt
Ti	%	Titan
Ni	%	Nickel
Mo	%	Molybdenum

Description of physical characteristics

Parameter	Units of measurement	Description
Parameter	Units of measurement	Description
$\rho$	$\frac{kg}{m^3}$	The density of the material

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
$\psi$	%	Reduction in cross section on fracture
$KCU\cdot 10^{3}$	$\frac{J}{m^2}$	Impact toughness