OT4, OT4-0, OT4-1, OT4sv & OT4-1sv / ОТ4-1св Titanium Alloys
Russian Metals supplies OT4 / ОТ4, OT4-0 / ОТ4-0, OT4-1 / ОТ4-1, OT4sv / ОТ4св and OT4-1sv / ОТ4-1св Titanium Alloys for sheet products, formed parts, welded parts, tubes, bars, rods and titanium welding wire applications.
These Russian titanium alloy grades are used where good formability, corrosion resistance, weldability, high plasticity and reliable fabrication performance are required for sheet metal parts, complex-shape components and welded assemblies.
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Russian Grade Name and Product Name
| Product Name | Russian Grade | Russian Product Name | Product Type |
|---|---|---|---|
| OT4 Titanium Alloy | ОТ4 | Титановый сплав ОТ4 | Ti-Al-Mn titanium wrought alloy |
| OT4-0 Titanium Alloy | ОТ4-0 | Титановый сплав ОТ4-0 | Low-strength, high-plasticity titanium alloy |
| OT4-1 Titanium Alloy | ОТ4-1 | Титановый сплав ОТ4-1 | Weldable Ti-Al-Mn titanium alloy |
| OT4sv Titanium Welding Wire | ОТ4св | Сварочная проволока ОТ4св | Titanium welding wire / filler wire |
| OT4-1sv Titanium Welding Wire | ОТ4-1св | Сварочная проволока ОТ4-1св | Titanium welding wire / filler wire |
Material Overview
OT4-type titanium alloys are known for good technological plasticity, corrosion resistance, weldability and suitability for fabricated titanium components. These grades are useful for cold forming, hot forming, stamping, deep drawing, sheet metal forming, thin-wall parts, welded assemblies, chemical equipment, marine components, heat exchangers and pressure equipment.
Russian Metals supplies OT4 / ОТ4, OT4-0 / ОТ4-0, OT4-1 / ОТ4-1, OT4sv / ОТ4св and OT4-1sv / ОТ4-1св in project-ready forms with material certificate, heat number traceability, chemical analysis, dimensional inspection and export-safe packaging.
Grade Classification
| Grade | Russian Name | Classification | Main Performance Focus |
|---|---|---|---|
| OT4 | ОТ4 | Titanium wrought alloy | Pseudo-alpha Ti-Al-Mn titanium alloy |
| OT4-0 | ОТ4-0 | Titanium wrought alloy | Low strength and high plasticity |
| OT4-1 | ОТ4-1 | Titanium wrought alloy | Weldability, formability and sheet applications |
| OT4sv | ОТ4св | Titanium wrought alloy wire | Titanium welding wire and filler wire |
| OT4-1sv | ОТ4-1св | Titanium wrought alloy wire | Welding wire based on OT4-1-type chemistry |
OT4 / ОТ4 Titanium Alloy Overview
OT4 / ОТ4 Titanium Alloy is a Russian titanium wrought alloy connected with Ti-Al-Mn chemistry and pseudo-alpha titanium alloy structure. It is used for welded parts, formed parts, cold forming, stamping, sheet products, plates, bars, rods, tubes and industrial fabrication applications.
OT4 titanium alloy is selected where corrosion resistance, good fabrication behavior and controlled mechanical properties are needed for titanium alloy sheet, titanium alloy plate, titanium alloy tube and titanium alloy bar products.
OT4-0 / ОТ4-0 Titanium Alloy Overview
OT4-0 / ОТ4-0 Titanium Alloy is a low-strength, high-plasticity titanium alloy grade suitable for formed parts, welded parts, complex-shape parts, sheet metal forming, pipes, plates, bars and corrosion-resistant fabricated components.
OT4-0 is useful where easy forming, high ductility and weldability are more important than high tensile strength. It is commonly used for stamped parts, thin-wall parts, tubes, welded assemblies and industrial titanium fabrication.
OT4-1 / ОТ4-1 Titanium Alloy Overview
OT4-1 / ОТ4-1 Titanium Alloy is a Ti-Al-Mn titanium alloy with good technological plasticity, weldability and formability. It is used for titanium sheet, titanium plate, titanium bar, titanium strip, titanium tube and formed titanium parts.
OT4-1 is suitable for cold stamping, hot forming, deep drawing, welded parts, sheet metal components, thin-wall parts and fabricated titanium assemblies.
OT4sv / ОТ4св Titanium Welding Wire Overview
OT4sv / ОТ4св Titanium Welding Wire is a Russian titanium welding wire and filler wire grade used for titanium welding, TIG welding, argon welding, titanium sheet welding, titanium plate welding and titanium fabrication.
OT4sv titanium wire is supplied for welding applications where clean surface condition, controlled chemistry, wire diameter accuracy and weld metal compatibility are important.
OT4-1sv / ОТ4-1св Titanium Welding Wire Overview
OT4-1sv / ОТ4-1св Titanium Welding Wire is a related Russian titanium filler wire grade based on OT4-1-type chemistry. It is used for welding, filler wire, titanium welding rod, argon welding, TIG welding and fabricated titanium assemblies.
OT4-1sv titanium wire is supplied in clean, etched, degassed or pickled condition depending on wire standard, project requirement and welding application.
Difference Between OT4, OT4-0 and OT4-1
| Grade | Russian Name | Chemistry Focus | Main Character | Common Use |
|---|---|---|---|---|
| OT4 | ОТ4 | Higher Al-Mn range | Pseudo-alpha Ti-Al-Mn alloy | Welded parts, sheet, plate, tube and forming applications |
| OT4-0 | ОТ4-0 | Lower Al-Mn range | Low strength and high plasticity | Complex-shape parts, formed parts and welded parts |
| OT4-1 | ОТ4-1 | Medium Al-Mn range | High technological plasticity and weldability | Thin-wall parts, stamping, sheet and tube products |
OT4 is the broader Ti-Al-Mn Russian titanium alloy grade. OT4-0 has lower alloying content and is useful where high plasticity is required. OT4-1 has higher aluminium and manganese ranges than OT4-0 and is commonly selected for formed, welded and sheet-based titanium components.
Difference Between OT4sv and OT4-1sv Welding Wire
| Wire Grade | Russian Name | Aluminium Range | Manganese Range | Main Use |
|---|---|---|---|---|
| OT4sv | ОТ4св | Higher aluminium range | Ti-Al-Mn welding wire chemistry | Titanium welding wire and filler wire |
| OT4-1sv | ОТ4-1св | Lower aluminium range than OT4sv | OT4-1-type welding wire chemistry | Titanium filler wire and welding rod |
Both OT4sv and OT4-1sv are titanium welding wire grades. OT4sv has a higher aluminium range, while OT4-1sv follows the OT4-1-type chemistry and is used as filler wire for compatible titanium welding applications.
Available Product Forms
| Product Form | Available Grades | Common Use |
|---|---|---|
| Sheet | OT4 / ОТ4, OT4-0 / ОТ4-0, OT4-1 / ОТ4-1 | Forming, fabrication, stamping and thin-wall parts |
| Strip | OT4-0 / ОТ4-0, OT4-1 / ОТ4-1 | Thin-gauge fabrication and precision components |
| Plate | OT4 / ОТ4, OT4-0 / ОТ4-0, OT4-1 / ОТ4-1 | Machined parts, fabricated sections and corrosion-resistant components |
| Bar | OT4 / ОТ4, OT4-0 / ОТ4-0, OT4-1 / ОТ4-1 | Machining, shafts, pins and engineered parts |
| Rod | OT4 / ОТ4, OT4-1 / ОТ4-1 | Precision machining and fabricated components |
| Tube | OT4 / ОТ4, OT4-0 / ОТ4-0, OT4-1 / ОТ4-1 | Heat exchangers, chemical equipment and fabricated assemblies |
| Pipe | OT4-0 / ОТ4-0, OT4-1 / ОТ4-1 | Industrial fabrication and pressure equipment |
| Wire | OT4sv / ОТ4св, OT4-1sv / ОТ4-1св | Titanium welding wire and filler wire |
| Welding Wire | OT4sv / ОТ4св, OT4-1sv / ОТ4-1св | TIG welding, argon welding and titanium sheet welding |
| Filler Wire | OT4sv / ОТ4св, OT4-1sv / ОТ4-1св | Welding rod and filler metal applications |
| Forging | OT4 / ОТ4, OT4-1 / ОТ4-1 | Shaped blanks and formed components |
| Stamping | OT4-0 / ОТ4-0, OT4-1 / ОТ4-1 | Complex-shape parts and formed sheet products |
| Machined Blank | OT4 / ОТ4, OT4-0 / ОТ4-0, OT4-1 / ОТ4-1 | CNC-ready titanium components |
Product Specification Table
| Specification Point | OT4 / ОТ4 | OT4-0 / ОТ4-0 | OT4-1 / ОТ4-1 | OT4sv / ОТ4св | OT4-1sv / ОТ4-1св |
|---|---|---|---|---|---|
| Alloy Type | Ti-Al-Mn titanium alloy | Low-strength Ti-Al-Mn alloy | Ti-Al-Mn titanium alloy | Welding wire alloy | Welding wire alloy |
| Classification | Titanium wrought alloy | Titanium wrought alloy | Titanium wrought alloy | Titanium wrought alloy wire | Titanium wrought alloy wire |
| Main Use | Sheet, plate, bar, tube, forming | High-plasticity formed parts | Welded and stamped parts | Titanium welding wire | Titanium filler wire |
| Product Forms | Sheet, plate, bar, rod, tube | Sheet, strip, bar, pipe, plate | Sheet, strip, plate, bar, tube | Wire, filler wire, rod | Wire, filler wire, rod |
| Weldability | Weldable | Weldable without limitations | Weldable without limitations | Welding consumable | Welding consumable |
| Certification | MTC available | MTC available | MTC available | MTC available | MTC available |
Product Form Details
OT4-0 / ОТ4-0 and OT4-1 / ОТ4-1 Titanium Sheet
OT4-0 and OT4-1 titanium sheets are used in forming, fabrication, stamping, deep drawing, complex-shape parts, thin-wall components and welded sheet metal assemblies. Sheets can be supplied with controlled thickness, width, length and surface condition.
OT4-0 / ОТ4-0 and OT4-1 / ОТ4-1 Titanium Strip
Titanium strip is used for thin-gauge fabrication, formed parts, precision components and sheet metal forming applications where good plasticity and corrosion resistance are important.
OT4 / ОТ4, OT4-0 / ОТ4-0 and OT4-1 / ОТ4-1 Titanium Plate
Titanium plate is used for machined parts, fabricated sections, corrosion-resistant components, industrial equipment and pressure-related titanium applications.
OT4 / ОТ4 and OT4-1 / ОТ4-1 Titanium Bar
OT4 titanium bar and OT4-1 titanium bar are used for machining, turning, pins, shafts, fastener stock, engineered parts and industrial titanium components.
OT4 / ОТ4 and OT4-1 / ОТ4-1 Titanium Rod
Titanium rod is used for precision machining, forming, fabrication work and custom titanium alloy components requiring reliable corrosion resistance and dimensional stability.
OT4 / ОТ4, OT4-0 / ОТ4-0 and OT4-1 / ОТ4-1 Titanium Tube and Pipe
OT4-type titanium tubes and pipes are used in fabricated assemblies, heat exchangers, chemical equipment, marine components, pressure equipment and corrosion-resistant industrial systems.
OT4 / ОТ4 Titanium Forging
OT4-type titanium materials can be processed into forgings, shaped blanks and formed parts where corrosion resistance, weldability and moderate mechanical strength are required.
OT4-0 / ОТ4-0 and OT4-1 / ОТ4-1 Titanium Stamping
OT4-0 and OT4-1 are suitable for stamping, cold forming, hot forming and deep drawing. These grades are useful for complex-shape parts, thin-wall parts and sheet metal components.
OT4sv / ОТ4св and OT4-1sv / ОТ4-1св Titanium Welding Wire
OT4sv and OT4-1sv titanium welding wires are supplied for TIG welding, argon welding, titanium sheet welding, titanium plate welding and general titanium fabrication work.
OT4sv / ОТ4св and OT4-1sv / ОТ4-1св Titanium Filler Wire
Filler wire can be supplied as straight wire, coil wire, cut-length wire or welding rod form depending on diameter, packing requirement and welding process.
OT4 / ОТ4 Machined Blank
OT4-type machined blanks are CNC-ready titanium alloy pieces prepared for milling, turning, drilling, grinding and finished component production.
Wire Diameter Range
| Wire Grade | Common Diameter Range | Common Form |
|---|---|---|
| OT4sv / ОТ4св | 1.2 mm to 7.0 mm where applicable | Wire, filler wire, welding rod |
| OT4-1sv / ОТ4-1св | 1.2 mm to 7.0 mm where applicable | Wire, filler wire, welding rod |
Wire diameter, tolerance, surface condition and packing should be confirmed according to GOST 27265-87, stock condition and project requirement.
Surface Condition and Finish Options
| Product Type | Surface / Finish Options |
|---|---|
| Sheet and Strip | Bright, pickled, polished, ground, clean finish |
| Plate | Black, pickled, machined, ground, sand-blasted |
| Bar and Rod | Black, bright, peeled, polished, ground, machined |
| Tube and Pipe | Pickled, polished, machined, clean finish |
| Forging | Black, machined, ground, shot-blasted |
| Stamping | Clean, formed, pickled or project-specific finish |
| OT4sv Welding Wire | Bright, etched, degassed, clean, pickled |
| OT4-1sv Welding Wire | Bright, etched, degassed, clean, pickled |
| Machined Blank | Machined, ground, polished or custom finish |
Dimensional Range Overview
| Product Form | Common Dimensional Details |
|---|---|
| Sheet | Thickness, width and length as per project requirement |
| Strip | Controlled thickness and width, coil or cut-length options |
| Plate | Medium thickness or project-specific cut-to-size plate |
| Bar | Diameter and length according to machining requirement |
| Rod | Precision diameter and cut-length options |
| Tube | Outside diameter, wall thickness and length as required |
| Pipe | Pipe size, wall thickness and length based on project need |
| Wire | 1.2 mm to 7.0 mm where applicable |
| Welding Rod | Straight cut length for manual welding |
| Forging | Drawing-based forged shape, section and weight |
| Stamping | Project-based shape, thickness and tolerance |
| Machined Blank | Custom size, tolerance and finish based on drawing |
Chemical Composition Overview
OT4-type alloys mainly use titanium with aluminium and manganese as key alloying elements. Titanium remains the base element, while aluminium, manganese and controlled impurities support strength, plasticity, weldability, corrosion resistance and fabrication behavior.
OT4 / ОТ4 Chemical Composition
| Element | Typical Range / Limit |
|---|---|
| Titanium | Balance, approx. 91.83–95.40% |
| Aluminium | 3.5–5.0% |
| Manganese | 0.8–2.0% |
| Zirconium | Max 0.30% |
| Iron | Max 0.30% |
| Silicon | Max 0.12% |
| Carbon | Max 0.10% |
| Nitrogen | Max 0.05% |
| Oxygen | Max 0.15% |
| Hydrogen | Max 0.012% |
| Other Impurities | Max 0.30% |
OT4-0 / ОТ4-0 Chemical Composition
| Element | Typical Range / Limit |
|---|---|
| Titanium | Balance, approx. 96.13–98.80% |
| Aluminium | 0.4–1.4% |
| Manganese | 0.5–1.3% |
| Zirconium | Max 0.30% |
| Iron | Max 0.30% |
| Silicon | Max 0.12% |
| Carbon | Max 0.10% |
| Nitrogen | Max 0.05% |
| Oxygen | Max 0.15% |
| Hydrogen | Max 0.012% |
| Other Impurities | Max 0.30% |
OT4-1 / ОТ4-1 Chemical Composition
| Element | Typical Range / Limit |
|---|---|
| Titanium | Balance, approx. 94.33–97.50% |
| Aluminium | 1.5–2.5% |
| Manganese | 0.7–2.0% |
| Zirconium | Max 0.30% |
| Iron | Max 0.30% |
| Silicon | Max 0.12% |
| Carbon | Max 0.10% |
| Nitrogen | Max 0.05% |
| Oxygen | Max 0.15% |
| Hydrogen | Max 0.012% |
| Other Impurities | Max 0.30% |
OT4sv / ОТ4св Chemical Composition
| Element | Typical Range / Limit |
|---|---|
| Titanium | Balance, approx. 91.83–95.40% |
| Aluminium | 3.5–5.0% |
| Manganese | 0.8–2.0% |
| Zirconium | Max 0.30% |
| Iron | Max 0.30% |
| Silicon | Max 0.12% |
| Carbon | Max 0.10% |
| Nitrogen | Max 0.05% |
| Oxygen | Max 0.15% |
| Hydrogen | Max 0.006% |
| Other Impurities | Max 0.30% |
OT4-1sv / ОТ4-1св Chemical Composition
| Element | Typical Range / Limit |
|---|---|
| Titanium | Balance, approx. 94.33–97.50% |
| Aluminium | 1.5–2.5% |
| Manganese | 0.7–2.0% |
| Zirconium | Max 0.30% |
| Iron | Max 0.30% |
| Silicon | Max 0.12% |
| Carbon | Max 0.10% |
| Nitrogen | Max 0.05% |
| Oxygen | Max 0.15% |
| Hydrogen | Max 0.006% |
| Other Impurities | Max 0.30% |
Titanium Balance Note
Titanium is the base element in OT4 / ОТ4, OT4-0 / ОТ4-0, OT4-1 / ОТ4-1, OT4sv / ОТ4св and OT4-1sv / ОТ4-1св. The remaining chemistry is controlled through aluminium, manganese and impurity limits to support formability, weldability and corrosion-resistant performance.
Role of Alloying Elements
Aluminium
Aluminium improves strength, thermal stability and lightweight performance in titanium alloys. In OT4-type grades, aluminium content changes the balance between strength and plasticity.
Manganese
Manganese improves technological behavior, hot workability and alloy processing performance. It supports forming, fabrication and Ti-Al-Mn alloy performance in OT4-type titanium materials.
Controlled Impurities
| Controlled Element | Importance |
|---|---|
| Iron | Controlled for consistent mechanical behavior |
| Carbon | Limited to maintain titanium alloy quality |
| Silicon | Controlled for chemistry consistency |
| Nitrogen | Controlled because it affects titanium alloy performance |
| Oxygen | Controlled for strength, ductility and formability |
| Hydrogen | Controlled because hydrogen can affect titanium quality |
| Zirconium | Limited according to grade chemistry |
| Other Impurities | Limited for MTC compliance and grade consistency |
Mechanical Properties
| Grade | Product Form / Condition | Tensile Strength | Elongation | Reduction of Area | Hardness / Notes |
|---|---|---|---|---|---|
| OT4 / ОТ4 | Sheet, annealed | Approx. 685 MPa | 10–20% | As per MTC | HB 207–285 annealed |
| OT4 / ОТ4 | Bar, annealed | Approx. 635–885 MPa | 8–11% | 20–30% | As per MTC |
| OT4 / ОТ4 | Plate | Approx. 685–885 MPa | 6–8% | 10–15% | As per MTC |
| OT4-0 / ОТ4-0 | Sheet, annealed | Approx. 470 MPa | 20–30% | As per MTC | HB around 200 sheet |
| OT4-0 / ОТ4-0 | Pipe | Approx. 490–637 MPa | 15% | As per MTC | As per MTC |
| OT4-0 / ОТ4-0 | Bar, annealed | Approx. 440–635 MPa | 13–20% | 30–40% | HB 156–207 bar |
| OT4-0 / ОТ4-0 | Plate | Approx. 490–635 MPa | 10–12% | Approx. 18% | As per MTC |
| OT4-1 / ОТ4-1 | Sheet / bar / plate | As per product form and MTC | As per MTC | As per MTC | As per MTC |
| OT4sv / ОТ4св | Wire, GOST 27265-87 | Approx. 590–835 MPa | 7–10.5% | As per MTC | Welding wire grade |
| OT4-1sv / ОТ4-1св | Wire, GOST 27265-87 | Approx. 540–785 MPa | 7.5–12% | As per MTC | Welding wire grade |
OT4-0 / ОТ4-0 Mechanical Properties
OT4-0 / ОТ4-0 is known for low strength and high plasticity. It is useful for sheet, pipe, bar and plate products where forming, bending, stamping and fabrication are important.
Its high elongation and lower strength make it suitable for complex-shape components and parts that require strong formability.
OT4-1 / ОТ4-1 Mechanical Properties
OT4-1 / ОТ4-1 mechanical properties depend on product form, thickness, annealing condition and final specification. It is selected where good technological plasticity, weldability and formability are required for sheet, plate, bar, tube and stamped products.
OT4sv / ОТ4св and OT4-1sv / ОТ4-1св Wire Mechanical Properties
OT4sv / ОТ4св welding wire is commonly referenced with tensile strength around 590–835 MPa and elongation around 7–10.5% for GOST 27265-87 wire.
OT4-1sv / ОТ4-1св welding wire is commonly referenced with tensile strength around 540–785 MPa and elongation around 7.5–12% for GOST 27265-87 wire.
Final values should be confirmed from the MTC, wire diameter, surface condition and applicable welding wire standard.
Hardness
Hardness values depend on grade, product form and heat treatment condition. OT4 / ОТ4 annealed material is commonly referenced around HB 207–285, while OT4-0 / ОТ4-0 bar is commonly referenced around HB 156–207.
Hardness testing helps verify machining behavior, forming suitability and finished component performance.
Density
OT4-type titanium alloys offer titanium’s lightweight advantage compared with many steel alloys. OT4 / ОТ4 density is commonly around 4550 kg/m³, while OT4-0 / ОТ4-0 is commonly around 4514 kg/m³ depending on composition and condition.
This low density supports lightweight fabricated parts, aircraft components, chemical equipment and marine titanium assemblies.
Annealing and Heat Treatment
OT4-type titanium alloys are commonly supplied in annealed or project-specific processed condition. Annealing helps improve ductility, forming response, stress relief and stability before fabrication or machining.
| Process | Purpose |
|---|---|
| Annealing | Improves ductility and stabilizes material condition |
| Incomplete Annealing | Used where partial stress relief is required |
| Full Annealing | Used for sheet, bar, forging or stamping forms where required |
| Stress Relief | Reduces residual stress after forming or machining |
| Project-Specific Heat Treatment | Selected according to product form and application |
Weldability
OT4 / ОТ4, OT4-0 / ОТ4-0 and OT4-1 / ОТ4-1 are used for welded parts and welded assemblies. OT4-0 and OT4-1 are suitable for titanium alloy fabrication where weldability, formability and corrosion resistance are required.
OT4sv / ОТ4св and OT4-1sv / ОТ4-1св are used as titanium welding wire and titanium filler wire for TIG welding, argon welding, titanium sheet welding, titanium plate welding and welded fabrication. Wire cleanliness, inert gas shielding and surface preparation are important for titanium welding quality.
Machinability, Formability and Corrosion Resistance
OT4 / ОТ4, OT4-0 / ОТ4-0 and OT4-1 / ОТ4-1 can be processed by cutting, turning, milling, drilling, grinding, cold forming, hot forming, stamping and deep drawing. Proper titanium tooling, coolant and process control are recommended for machining.
These grades provide corrosion-resistant titanium alloy performance for chemical equipment, marine components, heat exchangers, pressure equipment, industrial fabrication and welded assemblies.
Applications of OT4 / OT4-0 / OT4-1 / OT4sv / OT4-1sv Titanium Alloys
| Application | Suitable Grade |
|---|---|
| Complex-shape parts | OT4-0 / ОТ4-0, OT4-1 / ОТ4-1 |
| Thin-wall parts | OT4-0 / ОТ4-0, OT4-1 / ОТ4-1 |
| Stamped parts | OT4-0 / ОТ4-0, OT4-1 / ОТ4-1 |
| Welded assemblies | OT4 / ОТ4, OT4-0 / ОТ4-0, OT4-1 / ОТ4-1 |
| Sheet metal parts | OT4-0 / ОТ4-0, OT4-1 / ОТ4-1 |
| Titanium tubes and pipes | OT4 / ОТ4, OT4-0 / ОТ4-0, OT4-1 / ОТ4-1 |
| Chemical equipment | OT4 / ОТ4, OT4-0 / ОТ4-0, OT4-1 / ОТ4-1 |
| Heat exchangers | OT4-type tube and sheet products |
| Marine components | OT4-type corrosion-resistant titanium products |
| Pressure equipment | OT4-type sheet, plate, tube and pipe products |
| Titanium welding wire | OT4sv / ОТ4св, OT4-1sv / ОТ4-1св |
| TIG welding and argon welding | OT4sv / ОТ4св, OT4-1sv / ОТ4-1св |
| Titanium fabrication | OT4 / ОТ4, OT4-1 / ОТ4-1, OT4sv / ОТ4св |
Testing, Certification and Packaging
Russian Metals supplies OT4 / ОТ4, OT4-0 / ОТ4-0, OT4-1 / ОТ4-1, OT4sv / ОТ4св and OT4-1sv / ОТ4-1св titanium materials with inspection, documentation and export packing support.
| Testing / Certification Point | Details |
|---|---|
| Chemical Analysis | Confirms Ti, Al, Mn and controlled impurity limits |
| Mechanical Testing | Tensile strength, elongation, reduction of area and hardness where required |
| Hardness Testing | Available for sheet, bar, plate and formed components |
| Dimensional Inspection | Diameter, thickness, width, length and tolerance checks |
| Surface Inspection | Confirms finish, cleanliness and visible surface quality |
| Wire Cleanliness Inspection | Important for OT4sv and OT4-1sv welding wire |
| Material Certificate | MTC with grade, heat number and chemistry |
| Heat Number | Heat-level material traceability |
| Batch Traceability | Batch identification from supply to packing |
| Grade Marking | OT4 / ОТ4, OT4-0 / ОТ4-0, OT4-1 / ОТ4-1, OT4sv / ОТ4св or OT4-1sv / ОТ4-1св marking |
| Export Packaging | Wooden box, bundle packing, sealed wire packing, spool packing or project-specific packing |
Grade Comparison Table
| Grade | Russian Name | Alloy System | Product Focus | Key Benefit | Typical Application |
|---|---|---|---|---|---|
| OT4 | ОТ4 | Ti-Al-Mn | Sheet, plate, bar, tube, forging | Pseudo-alpha titanium alloy performance | Welded and formed parts |
| OT4-0 | ОТ4-0 | Lower Al-Mn Ti alloy | Sheet, strip, bar, pipe, plate | Low strength and high plasticity | Complex-shape and stamped parts |
| OT4-1 | ОТ4-1 | Ti-Al-Mn | Sheet, strip, plate, bar, tube | Weldability and technological plasticity | Thin-wall parts and welded assemblies |
| OT4sv | ОТ4св | Ti-Al-Mn welding wire | Welding wire and filler wire | Titanium welding compatibility | TIG welding and titanium fabrication |
| OT4-1sv | ОТ4-1св | OT4-1-type welding wire | Welding wire and filler rod | Controlled filler wire chemistry | Titanium sheet and plate welding |
Equivalent Grade Note
OT4 / ОТ4, OT4-0 / ОТ4-0, OT4-1 / ОТ4-1, OT4sv / ОТ4св and OT4-1sv / ОТ4-1св should not be assumed to have direct equivalent grades unless the material certificate and project specification confirm the match.
Final material selection should be based on Russian grade name, chemical composition, mechanical properties, product form, welding requirement and MTC.
FAQs
What is OT4 titanium alloy?
▾
OT4 / ОТ4 is a Russian Ti-Al-Mn titanium wrought alloy used for sheet, plate, bar, tube, welded parts, formed parts and corrosion-resistant titanium applications.
What is the Russian name of OT4?
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The Russian grade name of OT4 is ОТ4, and the Russian product name is Титановый сплав ОТ4.
What is OT4-0 titanium alloy?
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OT4-0 / ОТ4-0 is a low-strength, high-plasticity Russian titanium alloy grade used for formed parts, welded parts, complex-shape components, sheet, pipe, bar and plate products.
What is OT4-1 titanium alloy?
▾
OT4-1 / ОТ4-1 is a Ti-Al-Mn titanium wrought alloy used for sheet, plate, bar, strip, tube, stamping, welded parts and thin-wall components.
What is the difference between OT4-0 and OT4-1?
▾
OT4-0 / ОТ4-0 has lower aluminium and manganese ranges and is more focused on high plasticity. OT4-1 / ОТ4-1 has higher aluminium and manganese ranges and is widely used for weldable and formed titanium components.
What is OT4sv titanium alloy?
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OT4sv / ОТ4св is a Russian titanium wrought alloy wire grade used as titanium welding wire and titanium filler wire.
Is OT4sv used as titanium welding wire?
▾
Yes, OT4sv / ОТ4св is used as titanium welding wire for TIG welding, argon welding, titanium sheet welding, titanium plate welding and fabrication applications.
What is OT4-1sv titanium welding wire?
▾
OT4-1sv / ОТ4-1св is a Russian titanium welding wire and filler wire grade based on OT4-1-type chemistry.
What is the Russian name of OT4-1sv?
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The Russian grade name of OT4-1sv is ОТ4-1св, and the Russian product name is Сварочная проволока ОТ4-1св.
What is the chemical composition of OT4-0?
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OT4-0 / ОТ4-0 contains titanium balance with approximately 0.4–1.4% aluminium, 0.5–1.3% manganese and controlled impurity limits.
What is the chemical composition of OT4-1?
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OT4-1 / ОТ4-1 contains titanium balance with approximately 1.5–2.5% aluminium, 0.7–2.0% manganese and controlled impurity limits.
What is the chemical composition of OT4sv?
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OT4sv / ОТ4св contains titanium balance with approximately 3.5–5.0% aluminium, 0.8–2.0% manganese and controlled impurity limits.
What wire diameter is available in OT4sv / OT4-1sv?
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OT4sv and OT4-1sv titanium welding wire may be supplied in common wire diameter ranges such as 1.2 mm to 7.0 mm, depending on standard, stock condition and project requirement.
Are OT4-0 and OT4-1 weldable?
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Yes, OT4-0 / ОТ4-0 and OT4-1 / ОТ4-1 are suitable for welded parts and welded assemblies. Final welding procedure should match the base metal, filler wire, shielding gas and service requirement.
What product forms are available in OT4 / OT4-0 / OT4-1 / OT4sv / OT4-1sv?
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Russian Metals supplies OT4-type grades in sheet, strip, plate, bar, rod, tube, pipe, wire, welding wire, filler wire, forging, stamping and machined blank forms.
OT4 / ОТ4, OT4-0 / ОТ4-0, OT4-1 / ОТ4-1, OT4sv / ОТ4св & OT4-1sv / ОТ4-1свs Titanium Alloys with MTC and Export Support
Send the required alloy designation, product form, dimensions, quantity, standard, delivery condition, testing, certificate requirements and destination for a technically correct quotation.
OT4 / ОТ4, OT4-0 / ОТ4-0, OT4-1 / ОТ4-1, OT4sv / ОТ4св & OT4-1sv / ОТ4-1свs supply support.
Chemical, mechanical, heat-treatment and inspection documentation.
Product-form, cut-to-size, forging and drawing-based supply support.
Export packaging and international delivery assistance.