VT6

Weldability without restrictions. The hardness of the rod VT6 after quenching and aging HB 10 -1 = 293 — 361 MPa. Hardness of VT6 punching after annealing HB 10 -1 = 255 — 341 MPa,

for the manufacture of large welded structures and precast aircraft, for the manufacture of cylinders operating under internal pressure in a wide range of temperatures from 196 to 450 ° C, and a number of other structural elements; class structure of α + β

Classification

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

Chemical composition

Standard Fe, % Si, % Ti, % V, % Zr, % Al, % C, % O, % N, % H, %
GOST 19807-91 < 0.6 < 0.1 86.45–90.9 3.5–5.3 < 0.3 5.3–6.8 < 0.1 < 0.2 < 0.05 < 0.015

Information on suppliers

Physical characteristics

Temperature, °C $$E\cdot 10^{9}$$, $$MPa$$ $$\alpha\cdot 10^{6}$$, $$K^{-1}$$ $$\varkappa$$, $$\frac{W}{m\cdot K}$$ $$\rho$$, $$\frac{kg}{m^3}$$ $$c\cdot 10^{-3}$$, $$\frac{J}{kg\cdot K}$$ $$R\cdot 10^{-6}$$, $$\Omega\cdot m$$
20 115 8.37 4450 1.6
100 8.4 9.21 1.82
200 8.7 10.88 0.586 2.02
300 9 11.7 0.67 2.12
400 10 12.56 0.712 2.14
500 13.82 0.795
600 15.49 0.879

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
Sheet GOST 22178-76 annealing 885 8
Round GOST 26492-85 enhanced quality 835–1050 6–10 20–30 300–400
Round GOST 26492-85 1080 4 12 200
Round GOST 26492-85 835–885 6–8 15–20 250
Round GOST 26492-85 enhanced quality 1080 6 20 250–300
Stamping 950–1100 10–13 35–60 400–800
Plate GOST 23755-79 11–100 annealing 835–1080 6 12–16 300

Brinell hardness number

Rolling Standard Classifiers Value, HBW
Round Hardening, aging 293–361
Metal rolling annealing 255–341

Technological Properties

Weldability
no limits

Analogues

Germany USA Japan France United Kingdom
3.7164 6Al-4V SAT-64 T-A6V Ti-Al-V
3.7165 Grade5

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
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