VT14

Hardness of stamping VT14 after annealing HB 10 -1 = 255 — 341 MPa. Hardness of VT14 punching after quenching and aging HB 10 -1 = 302 — 388 MPa. Weldability without restrictions.

parts, long operating at temperatures up to 400 ° C; class structure of α + β

Classification

Country	Section	Category
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, %
Standard	Fe, %	Si, %	Ti, %	V, %	Zr, %	Al, %	C, %	O, %	Mo, %	N, %	H, %
GOST 19807-91	< 0.25	< 0.15	86.85–92.8	0.9–1.9	< 0.3	3.5–6.3	< 0.1	< 0.15	2.5–3.8	< 0.05	< 0.015

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Physical characteristics

Temperature, °C	$E\cdot 10^{9}$ , $MPa$	$\alpha\cdot 10^{6}$ , $K^{-1}$	$\varkappa$ , $\frac{W}{m\cdot K}$	$\rho$ , $\frac{kg}{m^3}$	$c\cdot 10^{-3}$ , $\frac{J}{kg\cdot K}$
Temperature, °C	$E\cdot 10^{9}$ , $MPa$	$\alpha\cdot 10^{6}$ , $K^{-1}$	$\varkappa$ , $\frac{W}{m\cdot K}$	$\rho$ , $\frac{kg}{m^3}$	$c\cdot 10^{-3}$ , $\frac{J}{kg\cdot K}$
20	110		8.37	4520
100		8	9.21
200		8.2	10.47		0.544
300		8.5	11.72		0.586
400		8.8	12.92		0.628
500		8.9	13.82		0.67
600		8.7			0.712

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
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				1080–1180	4–6
Sheet	GOST 22178-76				835–885	8
Round	GOST 26492-85				1080	4	8	200
Round	GOST 26492-85				865–1080	8–10	25–35	450–500
Round	GOST 26492-85			enhanced quality	865–1080	8–10	25–35	450–500
Round	GOST 26492-85			enhanced quality	1080	4–6	8–12	200–250
Stamping					850–900	10–15
Stamping					1250–1300	6–15	20–40	500
The plate is annealed.	GOST 23756-79	11–100		annealing	835–1030	6–7	14–20

Brinell hardness number

Rolling	Standard	Classifiers	Value, HBW
Rolling	Standard	Classifiers	Value, HBW
Metal rolling		annealing	255–341
Metal rolling		Hardening, aging	302–388

Technological Properties

Weldability
Weldability
no limits

Analogues

USA	France
USA	France
4Al-3Mo-1V	T-A4D3V

Standards

Standard	Description
Standard	Description
GOST 19807-91

Description of chemical elements

Element	Units of measurement	Description
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
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)

Description of mechanical properties

Parameter	Units of measurement	Description
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
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