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


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

Chemical composition

Standard Fe, % Co, % Ni, % Mo, %
GOST 2591-2006 74 15 9 2

Information on suppliers

Physical characteristics

Temperature, °C $$\rho$$, $$\frac{kg}{m^3}$$
20 8170

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ $$\sigma_{P}$$, $$MPa$$ $$\psi$$, % $$KCU\cdot 10^{3}$$, $$\frac{J}{m^2}$$ d5, % Treatment
Alloy GOST 2591-2006 2600 2400 30 0.2 6 After aging 480-510 ° C


Standard Description
GOST 2591-2006 GOST 2591-2006

Description of chemical elements

Element Units of measurement Description
Fe % Iron
Co % Cobalt
Ni % Nickel
Mo % Molybdenum

Description of physical characteristics

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

Description of mechanical properties

Parameter Units of measurement Description
d5 % Elongation at break
$$\sigma _{U}$$ $$MPa$$ Ultimate tensile strength
$$\sigma_{P}$$ $$MPa$$ Proportionality limit
$$\psi$$ % Reduction in cross section on fracture
$$KCU\cdot 10^{3}$$ $$\frac{J}{m^2}$$ Impact toughness