EP617 (HN65KUVMR)

Classification

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

Chemical composition

Standard Fe, % Si, % B, % Mn, % Co, % Cr, % Ni, % Al, % Ce, % P, % C, % S, % Mo, % W, %
< 1 < 0.6 < 0.02 < 0.3 4–6 14–15.5 61.734–69.9 4.8–5.4 < 0.02 < 0.015 < 0.1 < 0.011 2.8–3.8 4.5–5.5

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 12.1–12.7 11.3–12.5 8250

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ $$\sigma_{0.2}$$, $$MPa$$ d5, % Treatment
Round TU 14-1-1442-75 40 Transverse hot rolling, fat, Transverse 570 220 7–10

Твёрдость по Роквеллу

Rolling Standard Classifiers Value, HRC
Round TU 14-1-1494-75 raw, hot rolling, hardness, Transverse 38–40

Technological Properties

Weldability Flake Susceptibility
Boundedly welded insensitive

Limit operating modes

Standard Температура, °C
TU 14-1-1494-75 650–720

Heat Treatment Modes

Treatment
quenching from 1220 ± 10 ° С (4-6 hours) in air, aging at 850 ± 15 ° С (24 hours)

Long-term strength

Standard Treatment Постоянно приложенное напряжение, МПа
TU 14-1-1494-75 > 530

Properties

Property
It is deformed in a hot state. The temperature range of stamping is 1180 ... 1050 ° C. Cooling after hot deformation in air

Description of chemical elements

Element Units of measurement Description
Fe % Iron
Si % Silicon
B % Bor
Mn % Manganese
Co % Cobalt
Cr % Chrome
Ni % Nickel
Al % Aluminium
Ce % Cerium
P % Phosphorus
C % Carbon
S % Sulfur
Mo % Molybdenum
W % Tungsten

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
d5 % Elongation at break
$$\sigma_{0.2}$$ $$MPa$$ Tensile stress required to produce a total elongation of 0.2%
$$\sigma _{U}$$ $$MPa$$ 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