Wire, circle, rod
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The circle, wire, rod of grade VT1−0 are made of light high-temperature titanium. They retain their strength properties in the temperature range from -253 ° C to + 650 ° C. They have a minimal coefficient of thermal expansion, low density (4.5 g / cm 3), plasticity allowing to produce parts of any shape. Surface oxide film gives the material a corrosion and chemical resistance equal to noble metals. In sea water, the rate of corrosion of titanium does not exceed 0.002 mm / year. The circle, wire, rod of grade VT1−0 are resistant to acids, alkalis, ammonia, hydrogen sulphide. This material is not known for «metal fatigue».
|Thickness of semi-finished product (mm)||Name||Heat treatment||Plasticity δ%||Strength (MPa)||KCU J / cm³|
|10 — 100 D||Bar||Annealing||> 20%||395 — 540||> 100|
|101 — 150 P||— «-||— «-||> 17%||395 — 540||> 50|
|150 — 250 P||— «-||— «-||> 15%||355 — 540||> 50|
|140 — 250 T||— «-||— «-||> 17%||375 — 540||> 70|
|Ø 80||— «-||Hot-rolled||28||450||200|
|Ø 100||— «-||— «-||27.2||470||140|
|Ø 80||— «-||Annealing||29||450||185|
|Ø 100||— «-||— «-||23.7||455||175|
N — transverse direction of cutting of bars, T — high, D — longitudinal.
High labor intensity of production. Hot titanium reacts actively with atmospheric gases. Therefore, it melts only in inert gases or in a vacuum, VT1−0 is difficult to cut hard, its strength (400−500 MPa), is not considered high enough. For comparison, the strength of VT20 is more than 1000 MPa.
The standard is GOST 27265−87. The surface of a circle, wire, rod of mark VT1−0 must be clean without oil stains, breaks, burrs, pure and light color, without hints of tarnish. The alpha alloy VT1−0 is saturated with α-stabilizers (aluminum, gallium, indium) and non-metals (N, O, C). They increase the temperature of the polymorphic transformation. Up to 882.5 ° C, Ti retains the α-structure, and above this temperature it acquires a β-structure up to the melting point.
|The temperature at which these characteristics were obtained t ° C||20 ° С|
|Coefficient of linear thermal expansion α [1 / degree]||8.2 x 10 -6|
|Density [g / cm 3 ]||4.45|
|Modulus of elasticity of the first kind, E [MPa] x10 -5||1.12|
|Specific heat at 20 ° C С [kJ / (kg · deg)]||0.54|
|Thermal conductivity K [W / (m · K)]||307.3|
|Coefficient of thermal conductivity), l [W / (m · deg)]||18.85|
Industrial chemistry, pulp and paper and oil and gas. Wire, circle and rod of grade VT1−0 are exceptionally resistant to corrosion, biologically inert, due to this they are used in medicine, pharmaceutics, and non-magnetic material makes this material relevant for the installation of electrical engineering. Titanium rolling, very light and strong, is in demand with modern shipbuilding and aviation, where low weight and reliability play a decisive role. Today, titanium wire is used to produce exclusive jewelry.
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