Titanium Alloy 27B

No foreign analogues

Used for the manufacture of long products, ingots and semi-finished products

Classification

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

Chemical composition

Standard	Fe, %	Si, %	B, %	Ti, %	V, %	Zr, %	Al, %	O, %	Nb, %	N, %	H, %	ET, %
Standard	Fe, %	Si, %	B, %	Ti, %	V, %	Zr, %	Al, %	O, %	Nb, %	N, %	H, %	ET, %
GOST 19807-91	< 0.25	< 0.12	< 0.003	88.841–93.6	0.7–1.5	2–3	3–4.2	< 0.14	0.7–1.5	< 0.04	< 0.006	< 0.4

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Physical characteristics

Temperature, °C	$\alpha\cdot 10^{6}$ , $K^{-1}$	$\varkappa$ , $\frac{W}{m\cdot K}$	$\rho$ , $\frac{kg}{m^3}$	Cp, Дж/кг·К
Temperature, °C	$\alpha\cdot 10^{6}$ , $K^{-1}$	$\varkappa$ , $\frac{W}{m\cdot K}$	$\rho$ , $\frac{kg}{m^3}$	Cp, Дж/кг·К
20	8.1	9.2	4500	0.48

Mechanical properties at 20 °C

Rolling	Standard	Size, mm	Tension	Classifiers	$\sigma _{U}$ , $MPa$	$\sigma_{Y}$ , $MPa$	d5, %	Treatment
Rolling	Standard	Size, mm	Tension	Classifiers	$\sigma _{U}$ , $MPa$	$\sigma_{Y}$ , $MPa$	d5, %	Treatment
Forgings	GOST 19807-91	450	Transverse	raw, deformation, fat, Transverse	420–450	200–250	15–20

Brinell hardness number

Rolling	Standard	Classifiers	Value, HBW
Rolling	Standard	Classifiers	Value, HBW
Forgings	GOST 19807-91	raw, deformation, fat, Transverse	190–210

Heat Treatment Modes

Treatment
Treatment
Isothermal annealing at 660-860 degrees. C, air-cooled

Analogues

Russia
Russia
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Standards

Standard	Description
Standard	Description
GOST 19807-91
OST 1-92077-91	OST

Description of chemical elements

Element	Units of measurement	Description
Element	Units of measurement	Description
ET	%	Total other items
Fe	%	Iron
Si	%	Silicon
B	%	Bor
Ti	%	Titan
V	%	Vanadium
Zr	%	Zirconium
Al	%	Aluminium
O	%	Oxygen
Nb	%	Niobium
N	%	Nitrogen
H	%	Hydrogen

Description of physical characteristics

Parameter	Units of measurement	Description
Parameter	Units of measurement	Description
Cp	Дж/кг·К	Specific heat of material
$\alpha\cdot 10^{6}$	$K^{-1}$	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

Description of mechanical properties

Parameter	Units of measurement	Description
Parameter	Units of measurement	Description
d5	%	Elongation at break
$\sigma_{Y}$	$MPa$	Yield strength
$\sigma _{U}$	$MPa$	Ultimate tensile strength