EP619 (46NHT)

Classification

Country Section Category
CIS, Russia, Ukraine Heat resistant steels and alloys Heat resistant high alloy steel

Chemical composition

Standard Fe, % Si, % Mn, % Cr, % Ti, % Ni, % Al, % P, % C, % S, % Mo, %
TU 14-1-3075-80 41.21–46.4 0.3–0.7 0.3–0.7 4.5–5.5 2.9–3.5 41.81–50.19 0.5–1 < 0.02 < 0.05 < 0.02 0.1–0.3

Information on suppliers

Physical characteristics

Temperature, °C $$\alpha\cdot 10^{6}$$, $$K^{-1}$$ $$\varkappa$$, $$\frac{W}{m\cdot K}$$ $$\rho$$, $$\frac{kg}{m^3}$$ Cp, Дж/кг·К
20 11.1–17.1 56–74.5 8000 456

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ $$\sigma_{Y}$$, $$MPa$$ Treatment
Round TU 14-1-3075-80 40 Transverse raw, hot rolling, fat, Transverse > 1260 > 760

Твёрдость по Роквеллу

Rolling Standard Classifiers Value, HRC
Round TU 14-1-3075-80 raw, hot rolling, fat, Transverse 45–50

Technological Properties

Weldability Flake Susceptibility Propensity to temper brittleness
Difficult to weld insensitive loathsome

Limit operating modes

Standard Температура, °C
TU 14-1-3075-80 < 740

Long-term strength

Standard Treatment Постоянно приложенное напряжение, МПа
TU 14-1-3075-80 < 650

Properties

Property
Dispersion hardening austenitic steel

Standards

Standard Description
TU 14-1-3075-80 TU 14-1-3075-80

Description of chemical elements

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

Description of physical characteristics

Parameter Units of measurement Description
Cp Дж/кг·К Specific heat of material
$$\alpha\cdot 10^{6}$$ $$K^{-1}$$ 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
$$\sigma_{Y}$$ $$MPa$$ Yield strength
$$\sigma _{U}$$ $$MPa$$ Ultimate tensile strength

Designation of types of weldability

Parameter Units of measurement Description
no limits Welding is performed without heating and without subsequent heat treatment
Boundedly welded Welding is possible with heating up to 100–120 °C and subsequent heat treatment
Difficult to weld For obtaining quality welded joints, additional operations are required: heating up to 200–300 °C for welding, heat treatment after welding — annealing
Not applicable for welded structures