EP648 (XH50VMTYUB)

Classification

Country Section Category
CIS, Russia, Ukraine Corrosion-resistant alloys and steels Corrosion-resistant heat-resistant steel

Chemical composition

Standard Fe, % Si, % B, % Mn, % Cr, % Ti, % Ni, % Al, % Ce, % P, % C, % S, % Nb, % Mo, % W, %
TU 14-3-1462-87 < 4 < 0.4 < 0.008 < 0.5 32–35 0.5–1.1 48.037–59.9 0.5–1.1 < 0.03 < 0.015 < 0.1 < 0.01 0.5–1.1 2.3–3.3 4.3–5.3

Information on suppliers

Physical characteristics

Temperature, °C $$E\cdot 10^{9}$$, $$MPa$$ $$\alpha\cdot 10^{6}$$, $$K^{-1}$$ $$\rho$$, $$\frac{kg}{m^3}$$ Cp, Дж/кг·К
20 204 11.5–14.5 8050 456

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ $$\sigma_{Y}$$, $$MPa$$ d5, % Treatment
Round TU 14-1-3046-80 25 Transverse annealing, cold rolling, calibrated, fat, Transverse 850–950 340–380 30–40

Brinell hardness number

Rolling Standard Classifiers Value, HBW
Round TU 14-1-3046-80 annealing, cold rolling, calibrated, Transverse 250–300

Technological Properties

Weldability Flake Susceptibility Propensity to temper brittleness
Boundedly welded insensitive not inclined

Standards

Standard Description
TU 14-3-1462-87

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
Ce % Cerium
P % Phosphorus
C % Carbon
S % Sulfur
Nb % Niobium
Mo % Molybdenum
W % Tungsten

Description of physical characteristics

Parameter Units of measurement Description
Cp Дж/кг·К Specific heat of material
$$E\cdot 10^{9}$$ $$MPa$$ Elastic modulus
$$\alpha\cdot 10^{6}$$ $$K^{-1}$$ Coefficient of thermal (linear) expansion (range 20°C–T)
$$\rho$$ $$\frac{kg}{m^3}$$ The density of the material

Description of mechanical properties

Parameter Units of measurement Description
d5 % Elongation at break
$$\sigma_{Y}$$ $$MPa$$ 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