a density of just 4.505 kg per cubic metre, but combines this
metallic "lightness" with a strength, especially in
titanium alloys, considerably higher than aluminium alloys and
comparable to the best structural steel. Conductivity of heat and
electricity is low, and titanium retains its' properties in a range
of approximately -270oC
+400oC. At near absolute zero titanium
becomes superconductive. At the higher temperature limit, strength
diminishes and oxidisation increases, limiting the range of
applications at high temperatures. Titanium melts at about 1660 oC,
boils at about 3287 oC.
weight of titanium is 47.9.
α phase: Close-packed hexagonal; a = 0.295030 nm, c =
c/a = 1.5873.
β phase: Body-centered cubic, a = 0.332 nm at 900 oC.
α phase: 4.507 g/cm3 at 20 oC.
β phase: 4.35 g/cm3 at 885 oC.
Properties (Typical, at Room Temperature):
Yield Strength: 140 MPa
in 50 mm: 54%
Bend Radius: <1t
Melted From Electrolytic Titanium: 70 to 74 HB
Melted From Iodide Titanium:
65 to 72 HB
of Sound: 4970 m/s
Point: 1668 + 10 oC
Point: 3260 oC (estimated)
Vapor Pressure (From 1587 to 1698 K):
log P = 7.7960 - (24,644/T) - 0.000227 T
(where P is in Pa and T is in K).
α to β, 882.5 oC
of Thermal Expansion: At 20
oC: 8.41 x 10-6/ oC.
At 1000 oC: 10.1 x
10-8/ oC (estimated).
13 K: Cp = 0.0706 + 5.43 x 10-4 T3
Room Temperature: Cp = 669.0 - 0.037188 T - 1.080 x
(where Cp is in J/kg
⋅ K and T is in K)
Cp, kJ/kg ⋅ K
Heat of Fusion: 440 kJ/kg (estimated)
Heat of Transformation: 91.8
Heat of Vaporization: 9.83 MJ/kg
Conductivity: 11.4 W/k .
K at -240 oC
Resistivity: 420 nΩ .
m at 20 oC
(Critical Temperature): 0.37 to
Susceptibility (Volume, at Room Temperature): 180 (+ 1.7) x 10-6 mks
Hemispherical Emittance: 0.30 at