VT5

Hardness VT5 HB 10 -1 = 229 — 321 MPa. Weldability s without restriction.

Welded parts operating at temperatures from -253 to 400 ° C; good corrosion resistance; α class structure

Classification

Country Section Category
CIS, Russia, Ukraine Titanium, titanium alloys Wrought Titanium Alloys

Chemical composition

Standard Fe, % Si, % Ti, % V, % Zr, % Al, % C, % O, % Mo, % N, % H, %
GOST 19807-91 < 0.3 < 0.12 90.63–95.2 < 1.2 < 0.3 4.5–6.2 < 0.1 < 0.2 < 0.8 < 0.05 < 0.015

Information on suppliers

Physical characteristics

Temperature, °C $$E\cdot 10^{9}$$, $$MPa$$ $$\alpha\cdot 10^{6}$$, $$K^{-1}$$ $$\varkappa$$, $$\frac{W}{m\cdot K}$$ $$\rho$$, $$\frac{kg}{m^3}$$ $$c\cdot 10^{-3}$$, $$\frac{J}{kg\cdot K}$$ $$R\cdot 10^{-6}$$, $$\Omega\cdot m$$
20 105 4400 1.08
100 8.3
200 8.9 10.47 0.586 1.15
300 9.5 11.3 0.628 1.18
400 10.4 12.56 0.67
500 10.6 14.24 0.712 1.2
600 10.8 15.49 0.754 1.23

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ $$\epsilon_L$$, % $$\psi$$, % $$KCU\cdot 10^{3}$$, $$\frac{J}{m^2}$$ Treatment
Round GOST 26492-85 enhanced quality 715–930 6–10 18–25 300–500
Round GOST 26492-85 annealing 685–735 6–8 15–20 300

Brinell hardness number

Rolling Standard Classifiers Value, HBW
229–321

Technological Properties

Weldability
no limits

Analogues

Germany USA Japan France United Kingdom
3.7114 5Al-2.5Sn KS-5-2.5 Ti-P.65 IMI317

Standards

Standard Description
GOST 19807-91

Description of chemical elements

Element Units of measurement Description
Fe % Iron
Si % Silicon
Ti % Titan
V % Vanadium
Zr % Zirconium
Al % Aluminium
C % Carbon
O % Oxygen
Mo % Molybdenum
N % Nitrogen
H % Hydrogen

Description of physical characteristics

Parameter Units of measurement Description
$$E\cdot 10^{9}$$ $$MPa$$ Elastic modulus
$$\alpha\cdot 10^{6}$$ $$K^{-1}$$ 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
$$c\cdot 10^{-3}$$ $$\frac{J}{kg\cdot K}$$ The specific heat of the material (range 20°C–T)
$$R\cdot 10^{-6}$$ $$\Omega\cdot m$$ Electrical resistivity

Description of mechanical properties

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

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