VT22

The hardness of the rod VT22 after annealing HB 10 ^-1 = 285 MPa

for highly loaded components and structures, long-term operating temperatures up to 350−400 ° C. (Power parts of the fuselage, wings, stamping, parts management, fasteners such as bolts Ushkova); class structure of α + β

Classification

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

Chemical composition

Standard	Fe, %	Si, %	Cr, %	Ti, %	V, %	Zr, %	Al, %	C, %	O, %	Mo, %	N, %	H, %
GOST 19807-91	0.5–1.5	< 0.15	0.5–1.5	79.4–86.3	4–5.5	< 0.3	4.4–5.7	< 0.1	< 0.18	4–5.5	< 0.05	< 0.015

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Physical characteristics

Temperature, °C	$\alpha\cdot 10^{6}$ , $K^{-1}$	$\varkappa$ , $\frac{W}{m\cdot K}$	$\rho$ , $\frac{kg}{m^3}$	$c\cdot 10^{-3}$ , $\frac{J}{kg\cdot K}$	$R\cdot 10^{-6}$ , $\Omega\cdot m$
20		8.32	4620		1.53
100	8	9.21
200	8.2	10.5		0.565
300	8.4	11.7		0.586
400	8.6	13.4		0.649
500	8.8	14.6		0.712
600		15.9

Mechanical properties at 20 °C

Rolling	Standard	Classifiers	$\sigma _{U}$ , $MPa$	$\epsilon_L$ , %	$\psi$ , %	$KCU\cdot 10^{3}$ , $\frac{J}{m^2}$
Round	GOST 26492-85		1030	6–8	14–20	200–250
Round	GOST 26492-85	enhanced quality	1080–1280	7–10	17–30	250–300
Round	GOST 26492-85	enhanced quality	1280	6–7	16–18	180–200

Brinell hardness number

Rolling	Standard	Classifiers	Value, HBW
Round		annealing	285

Standards

Standard	Description
GOST 19807-91

Description of chemical elements

Element	Units of measurement	Description
Fe	%	Iron
Si	%	Silicon
Cr	%	Chrome
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
$\alpha\cdot 10^{6}$	$K^{-1}$	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