EP612

Classification

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

Chemical composition

Standard Fe, % Si, % B, % Mn, % Cr, % Ti, % Ni, % Al, % P, % C, % S, % Nb, % Mo, %
33.66–45.4 < 0.6 < 0.01 < 0.6 12–16 2.3–3.4 37–40 0.5–1.4 < 0.03 < 0.08 < 0.02 1.3–2 1.5–2.2

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 12–17 56–69 8000 450

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ Treatment
The tape is hardcore. GOST 10994-74 0.5 Transverse half-firm, cold rolling, cold-work, thin < 780

Твёрдость по Роквеллу

Rolling Standard Classifiers Value, HRC
The tape is hardcore. GOST 10994-74 half-firm, cold rolling, cold-work, thin 40–45

Technological Properties

Weldability Flake Susceptibility Propensity to temper brittleness
Boundedly welded insensitive loathsome

Limit operating modes

Standard Температура, °C
GOST 10994-74 < 500

Description of chemical elements

Element Units of measurement Description
Fe % Iron
Si % Silicon
B % Bor
Mn % Manganese
Cr % Chrome
Ti % Titan
Ni % Nickel
Al % Aluminium
P % Phosphorus
C % Carbon
S % Sulfur
Nb % Niobium
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
$$\sigma _{U}$$ $$MPa$$ 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