SPT-2 SV titanium welding wire
|Mark||Analogue||W. Nr.||Aisi Uns||En||Order|
|СПТ-2||Delivery from the stock, in stock|
Titanium welding wire SPT-2sv produced in degassed and etched condition. Ovality should not exceed the limit deviation. Its surface should be clean, bright, no shades of tint, reproterol or dark spots. Allowed traces of broach, small risks, sunsets a depth given in the table.
|SPT-2 SV.||Titanium alloys||production of welding wire|
The percentage composition of the alloy SPT-2sv according to GOST 27265−87
|≤0.1||≤0.05||≤0.15||2.5 — 3.5||3.5 — 4.5||89.36 — 92.7||≤0.04||≤0.003||≤0.12||1 — 2||other 0.3|
Note: the substrate 5 is titanium, its content is about 89.36 — 92.7%.
The mechanical characteristics of titanium welding wire SPT-2sv (20°C).
|The titanium welding wire, GOST 27265−87||13||645−845|
Physical characteristics of the alloy SPT-2sv.
|540||100||l||a 10 6|
|r||R 10 9||C||T||18.85||E 10 — 5|
Marking physical properties:
|Temperature obtain information about the alloy [Hail]||— T|
|— The modulus of elasticity of the 1st kind [MPa]||— E|
|— Coefficient of thermal linear expansion (at 20°C) [1/Deg]||-a|
|— Electrical resistivity [Ohm·m]||-R|
|— Specific gravity [g/cm3]||-r|
|— Thermal conductivity coefficient [W/(m·deg)]||-l|
|— Specific heat (at 20°C) [j/(kg·deg)]||-C|
Marking mechanical properties:
|— The limit of proportionality (yield strength for permanent deformation) [MPa]||sT|
|— Short-term strength [MPa]||blower SB|
|Contraction ratio [ % ]||y|
|The elongation at break [ % ]||d5|
|— Brinell hardness number, [MPa]||HB|
|— Impact strength [ kJ / m2]||KCU|
|limited weldability||— required pre-heating to a temperature of 100−120°C with the final heat treatment|
|without restrictions||— no need for pre-heating and the final heat treatment|
|Difficult weldability||— required pre-heating to a temperature of 200−300°C with the final heat treatment|
Oval titanium wire must not exceed the limit deviation.
|The diameter of the wire SPT-2sv||The wire grade SPT-2sv depth of defect should be no more than|
Note. On the surface there are isolated defects in the wire diameter to 3 mm down to 0.1 mm At Ø > 3 mm — up to 0.2 mm. During metallographic control the number of macrosections exceeding the depth of defects shall not exceed 10%. Correct defects or surface contamination etching Pets etching separate bays with re-degassing.
Wire comes bays with outer diameter up to 900 mm. This wire should not be stuck coils or bends more than 100°. The waviness of the wire after annealing is not considered a marriage. Mass Bay — up to 50 kg If the Bay is made up of several parts, each of them shall not be less than 10 m.
The Bay is tightly tied soft titanium wire in three places and Packed in clean paper, wrapped with burlap, synthetic fabric, or plastic film, thickness according to GOST 10 354−82 100 — 200 µm without paper packaging. Packed Bay tied with twine respectively normative documentation.
Mechanical characteristics of welding wire shall be as specified in table requirements.
|Grade titanium alloy||Yield strength b MPa (kgf\mm sq)||Wire diameter, mm||B elongation, % not less|
|SPT-2sv||from 1.6 to 7.0 incl.||645−845 (66−86)||13,0|
On the label of the Bay States:
— grade wire;
— manufacturer and its trademark:
no heat and lot numbers;
— date of production;
— the designation of GOST.
— availability of technical control;
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