N17K12M5T (EP845-IL)

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
CIS, Russia, Ukraine Structural steel High strength high alloy structural steel

Chemical composition

Standard Fe, % Si, % Mn, % Ti, % Ni, % P, % C, % S, % Mo, %
TU 14-1-1846-76 75.47–77.17 < 0.1 < 0.1 1.1–1.3 17–18 < 0.01 < 0.01 < 0.01 4.5–5

Information on suppliers

Physical characteristics

Temperature, °C $$\alpha\cdot 10^{6}$$, $$K^{-1}$$ $$\varkappa$$, $$\frac{W}{m\cdot K}$$ $$\rho$$, $$\frac{kg}{m^3}$$
20 10–11.4 56–61 8119

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ $$\psi$$, % $$KCU\cdot 10^{3}$$, $$\frac{J}{m^2}$$ Treatment
Alloy TU 14-1-1846-76 2162 40 0.19 Aging

Standards

Standard Description
TU 14-1-1846-76

Description of chemical elements

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

Description of physical characteristics

Parameter Units of measurement Description
$$\alpha\cdot 10^{6}$$ $$K^{-1}$$ Coefficient of thermal (linear) expansion (range 20°C–T)
$$\varkappa$$ $$\frac{W}{m\cdot K}$$ Coefficient of thermal conductivity (the heat capacity of the material)
$$\rho$$ $$\frac{kg}{m^3}$$ The density of the material

Description of mechanical properties

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