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VT3-1 circle, rod

VT3-1 circle, rod

General characteristics

Titanium alloys are classified according to the configuration of the crystal lattice in the form hexahedron — α-lattice in the shape of a cube — β, mixed state — α+β. Grade of titanium VT3−1 belongs to a+ß alloys containing such alloying elements as aluminium and 6.3%, copper — 1.5%, molybdenum — 2.5%, silicon — 0.3%, iron — 0.5 per cent. Aluminum is the primary alloying element in titanium alloys almost all brands. It is relatively cheap, readily available, and its density less than the density of titanium, so the amount of specific strength of the material is enhanced, in this case — without loss of ductility. With increasing aluminum content increases the modulus of elasticity and heat resistance, and also decreases the tendency to hydrogen embrittlement. Supplements of molybdenum increase corrosion and chemical resistance, heat resistance, suppress in the hardening of the formation of α-phase. When a fairly large amount of β-stabilizers reduces the formation of α-phase without neutral reinforcers and α-stabilizers.

W 3−1 Heat treatment Wall thickness Strength (MPa) KCU j/cm3 Plasticity of δ%
Rod Annealing 10 — 60 1000 — 1200 More than 30 More than 10%
Rod Annealing 65 — 100 1000 — 1200 More than 30 More than 10%
Rod   101−130 950 — 1200 More than 30 More than 8%
Bars forged

Annealing

Isothermal annealing

Hardening-aging

101−250 950 — 1200 More than 30 More than 8%
Rod   1080 — 1130 --- 12 — 15
Rod   1270 --- 8 — 11
Rod Annealing до25 mm 980 — 1230 More than 30 More than 10%
Rod   14x14 mm 1053 — 2027 47,3 — 62,0 14 — 16,54
Rod Isothermal annealing 14x14 mm 1020 — 1160 30 — 40 14 — 20
Rod   5 — 10 1050 45 14
Rod   25 1030 — 1176 34 15
Rod   30 1058 — 1176 34 — 44 12 — 15
Rod   50 980 — 1030 41 — 51 14 — 18
Rod

Annealing 850 °C — aging

Annealing 870 °C — aging

25 1274 30 10
  1323 — 1373 20 — 30 7
Rod forged Annealing 879 °C — 650°C 35 1093 42 18,5
Extruded under isothermal conditions Annealing 870 °C — 650°C 17 1152 42 16,8
Rod extruded

Annealing 870°C

Quenching 870 °C to + 500 °C 5 hours.

Vtmo 500 °C for 5 h.

15 1075 — 1175 --- 12 — 13
  1270 — 1282 --- 8 — 11
  1390 — 1460 --- 6 — 9
Bars rolled

Isothermal annealing

Double annealing

Hardening-aging

15 1166 --- 16,5
  1205 --- 14,8
  1352 --- 8,0

Bars with the original

coarse-grained lamellar structure

Annealing 870 °C, 1 h and 650 °C, 2 h. 15 1058 --- 8,0
  1009 --- 15

Manufacturing titanium wire, circle and bar is normalized to GOST 27265−87. The surface should be dark spots, places of narotra. The color of the products should be clean and bright, with no shades of tint. Formed during the annealing of waviness is not a marriage.

Dignity

Wire, rod, round VT3−1 have high corrosion and chemical resistance, heat resistance, negligible temperature coefficient of expansion, lightness and flexibility. Fatigue resistance depends on the external environment. Titanium alloys in vacuum have higher endurance than in air. On the cyclic endurance of the material is greatly influenced by the quality and condition of the surface. It means the macro — and micro-unevenness, roughness, structural physico-mechanical stability of the surface layers, dependent on the modes of machining. The endurance limit is influenced by the ultimate gentle mechanical treatment with removal of the thinnest shavings of 0.1 mm and further hand polished with a copper skin to 8−9 CL roughness.

Physical characteristics of the VT3−1
The temperature at which the received data characteristics, °C 20°C
Coefficient of linear thermal expansion αx106 at 100 °C [1/ °C] 8,5
Density [g/cm3] 4,5
The modulus of elasticity of 1 of the kind E [MPa]x10-5 1,15
Specific heat capacity at 200 °C [j/(kg·deg)] 0,502

Limit short-term strength sin [MPa] Rod, GOST 26492−85

930
Electrical resistivity, Mhmm2/m 1,36

Disadvantages

The main disadvantage is the high labour intensity of production. Titanium melts only in vacuum or inert gases, as a liquid melt actively interacts with any of the atmospheric gases. Wire, rod, round VT3−1 are difficult to machining, and their strength (390−540 MPa), is not the tallest.

Application

Wire, rod, round VT3−1 used for the production of the most critical parts that can withstand extreme conditions in aircraft, rocket production, shipbuilding. In the petrochemical, chemical, oil and gas industry is crucial acid resistance and corrosion resistance of the material, and in agriculture, medicine, food industry — biological inertness.

Buy at best price

A large range of products from alloy grade VT3−1 in stock LLC «AVEK global» is able to meet wholesale and retail buyers. The price is formed taking into account technological features of production without the inclusion of additional costs. All products are certified, if required, is an additional control. The timing of orders is minimal. In touch — our experienced managers who will advise you on any questions. For wholesale orders enjoy significant discounts.