VT20-2 sv titanium welding wire
International Equivalent
| Mark | Analogue | W. Nr. | Aisi Uns | En | Order |
|---|---|---|---|---|---|
| VT20-2 | Delivery from the stock, in stock |
Relevance
Titanium welding wire of ВТ20−2св sold by Evek GmbH meets the most stringent domestic and foreign standards. The popularity of this wire is due to the highest quality, various assortment, optimal price.
| Mark of the alloy: | Classification: | Industrial use: |
|---|---|---|
| VT20−2sv. | Wrought titanium alloy | welding wire production |
Percentage composition of alloy VT20−2sv according to GOST 27 265−87
| Si | C | Fe | Mo | Ti | N | V | Al | H | O | Zr | Impurities |
|---|---|---|---|---|---|---|---|---|---|---|---|
| ≤0.1 | ≤0.05 | ≤0.15 | 0.5 — 1.5 | 89.86 — 94.2 | ≤0.04 | 0.5 — 1.5 | 3.5 — 4.5 | ≤0.003 | ≤0.12 | 1 — 2 | others 0.3 |
Note: Titanium is the basis; its percentage is about 89.86 to 94.2%.
Mechanical characteristics of VT20−2sv titanium welding wire (temperature 20°C).
| Range | Size | Size Range. |
|---|---|---|
| Wire GOST 27 265−87 | 10 | 635−835 |
Physical characteristics of alloy VT20−2sv.
| W/(m-grad) | 1/Grad | MPa | Grad | kg/m3 | Ohm-m | J/(kg-grad) |
|---|---|---|---|---|---|---|
| l | a 10 6 | 100 | 540 | |||
| 8.2 | 1.12 | 20 | 4505 | |||
| 18.85 | E 10- 5 | T | r | R 10 9 | C |
Marking of physical properties:
| Description | Designation |
|---|---|
| — Alloy data acquisition temperature [Grad] | — T |
| — Modulus of elasticity of the 1st kind, [MPa] | — E |
| — Coefficient of thermal linear expansion (at 20°C), [1/Grad] | -a |
| — Specific electrical resistance [Ohm-m] -R | -R |
| — Specific gravity [g/cm3] -r | -r |
| — Heat transfer coefficient [W/(m-grad)] -l | -l |
| — Specific heat capacity (at 20°C), [J/(kg-cold)] -C | -C |
Marking of mechanical properties:
| Description | Designation |
|---|---|
| — Limit of proportionality (yield strength for permanent deformation) [MPa] | sT |
| — Tensile strength [MPa] | sT |
| — Ratio constriction [ % ] | y |
| — Tensile elongation [ % ] | d5 |
| — Brinell hardness, in [MPa] | HB |
| — Impact toughness [ kJ/m2 ] | KCU |
| Designation | Description |
|---|---|
| limited weldable | — Must be preheated to 100−120°C with subsequent heat treatment |
| no restrictions | — No need for preheating and final heat treatment |
| Difficult to weld | — need for preliminary heating up to t° 200−300°C with final heat treatment |
Basic properties
Titanium welding wire is produced in degassed and pickled condition. Its ovality shall not exceed the limiting deviation. Its surface shall be clean, light-colored, without any undertones, unetching or dark spots. Traces of broaching, small risks, rolls of depth not more than specified in the table are allowed.
| Diameter of VT20−2 wire | The depth of penetration of defects in VT20−2 wire should not exceed |
|---|---|
| 1,0 | - |
| 1,2 | - |
| 1,4 | - |
| 1,6 | - |
| 1,8 | - |
| 2,0 | 0,4 |
| 2,5 | 0,5 |
| 3,0 | 0,5 |
| 3,5 | 0,6 |
| 4,0 | 0,6 |
| 5,0 | 0,7 |
| 6,0 | 0,8 |
| 7,0 | 0,8 |
Note. Small defects on the surface are allowed for wire diameter ≤ 3 mm — less than 0.1 mm. At Ø > 3 mm — up to 0.2 mm. The number of macro-depth defects should be within 10%. Dressing of wire coils with re-degassing is allowed.
Delivery
The introduced BT20−2 wire is certified. The technical documentation includes data on the chemical composition, the limiting percentage of impurities and mechanical properties. From us you can buy in bulk any semi-finished products for large-scale productions. We also offer optimum conditions for retail buyers. High level of service and promptness of the service is the face of our company.
The wire is supplied in coils with the outer diameter of up to 900 mm. Such wire should have no sticky coils or bends over 100°. Curliness of the wire after annealing is not considered a defect. The weight of the coil is up to 50 kg. If the coil consists of separate parts, length of each part should be more than 10 m.
The coil is tied up tightly with a soft titanium wire in 3 places and wrapped into clean paper, and then into a synthetic cloth or polyethylene film 0,1−0,2 mm thick — according to GOST 10 354−82 without paper wrapping. Such coil is tied up with twine according to the normative documentation.
Mechanical characteristics of the welding wire should comply with requirements of the table above.
| Material | GOST | σ at | ψ | δ5 |
|---|---|---|---|---|
| VT20−2 wire vs. | 27 265−87 | 635−835 | 35 |
σc — Ultimate short-time strength, [MPa]
δ5, — Tensile elongation at break, [ % ]
ψ — Relative narrowing, [ % ]
Marking
The coil label indicates:
— Wire grade;
— The manufacturer and his trade mark:
— No. of melting and batch;
— date of manufacture;
— GOST designation.
— availability of technical control;
Buy at the best price
All titanium alloys sold by Evek GmbH meet GOST and international quality standards. We deliver titanium rolled products of standard and non-standard sizes in the shortest terms. The high quality, reasonable prices and wide range of products determine the face of our company. Becoming our regular client you can count on a system of discount discounts. Cooperation with us will help you realize any engineering plans. We are waiting for your orders on our site.