Titanium Alloy 27B

No foreign analogues

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

Classification

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, %
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

Information on suppliers

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
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
Forgings GOST 19807-91 450 Transverse raw, deformation, fat, Transverse 420–450 200–250 15–20

Brinell hardness number

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

Heat Treatment Modes

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

Analogues

Russia
Сплав 27

Standards

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

Description of chemical elements

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
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
d5 % Elongation at break
$$\sigma_{Y}$$ $$MPa$$ Yield strength
$$\sigma _{U}$$ $$MPa$$ Ultimate tensile strength