A rod, a welded wire, an electrode made of titanium gost 2V alloy
Characteristics of alloy grade titanium gost 2V
|Grade of titanium alloy||Titanium gost 2V|
|Alloy classification||Titanium deformable alloy|
|Industrial usage of alloy||Manufacture of ingots, semi-finished products, titanium wire, rolled sections, details of special equipment, details for instrument engineering and aviation|
Percentage composition according to GOST 27265−87
|1 — 2||1.5 — 2.5||94.79 — 97.2||≤0.1||≤0,07||≤ 0.2||≤0,12||≤0,002||≤0,04||total 0,3|
Alloying increases strength characteristics and corrosion resistance of titanium 2−3 times as much. One of the main alloying elements of industrial titanium alloys is aluminium. Vanadium, molybdenum are the most important alloying components after aluminium. Heat-resisting alloys are based on a ternary system — titanium-aluminium-molybdenum. Extra-high tensile titanium alloys are based on titanium-aluminium-vanadium. Due to well-established trend of multicomponent alloying, most of modern titanium alloys contain aluminium, vanadium, molybdenum at the same time in their composition.
Mechanical characteristics (temperature is 20°С).
|Range of sizes||F.e.||Size||%||MPa||MPa||
|Wire, GOST 27265−87||16−20||490−635|
sv — Short-time strength limit
d5 — Elongation on failure
Physical characteristics of titanium alloy 2V
|C||R 10 9||r||a 10 6||E 10- 5||T||l|
Titanium grade gost 2V has high strength-to-density ratio, corrosion resistance, paramagnetism. It can be easy welded, but it poorly conducts heat.
|Description of mechanical characteristics||Identification|
|Flow limit at permanent deformation (proportional limit) [MPa]||sT|
|Brinell hardness [MPa]||HB|
|Contraction ratio (%)||y|
|Short resistance to rupture [MPa]||sv|
|Percent elongation at fracture [ % ]||d5|
|Impact hardness [ kJ/m2]||KCU|
Products are manufactured under an absolute control at all production stages. Thus, this provides 100% guarantee of quality.
|Description of physical characteristics||Identification|
|Temperature at which are obtained actual characteristics||20°С|
|Lineal expansion coefficient α x 106 at 100 °C [1/ °С]||8.2|
|Module of elasticity 1 sort Е [MPa] x 10-5||1.12|
|Specific heat of alloy at 200 °C [J (kg/deg)]||0.586|
|Heat conduction coefficient, l [V/(m/deg)]||8.37|
|Specific electric resistance Оhm-mm2/m||1.6|
|weldable without limits||— welding is done without previous heating of parts and without final heat treatment. High affinity of hot titanium to oxygen and nitrogen requires inert gas protection of not only a welding zone, but a reverse side of a seam, and all those zones of metal that are heated to 400 degrees as well|
|limitedly weldable||— qualitative welding requires pre-heating of parts to a temperature of 100−120°C and a final heat treatment|
|hardly weldable||— in order to obtain a qualitative welded joints, it is necessary to perform the following operations: to heat parts up to 200−300°C before welding; to do a heat treatment (annealing) after welding|
Titanium gost 2V has great prospects for applications in those spheres where are required high strength-to-density ratio, heat resistance in combination with high corrosion resistance. It is popular in food, chemical industries; in aviation, shipbuilding, rocket engineering, high-speed transport, sports equipment. Extraordinary characteristics of titanium are of the utmost interest in spacecraft engineering in the capacity of a structural material.
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