{"id":19187,"date":"2026-07-13T13:36:17","date_gmt":"2026-07-13T05:36:17","guid":{"rendered":"https:\/\/daxuns.com\/?p=19187"},"modified":"2026-07-13T13:36:17","modified_gmt":"2026-07-13T05:36:17","slug":"vt14-titanium-plate-%d0%b2%d1%8214-gost-composition-properties-and-supply-requirements","status":"publish","type":"post","link":"https:\/\/daxuns.com\/ja\/vt14-titanium-plate-%d0%b2%d1%8214-gost-composition-properties-and-supply-requirements\/","title":{"rendered":"VT14 Titanium Plate (\u0412\u042214): GOST Composition, Properties, and Supply Requirements"},"content":{"rendered":"

Direct answer: VT14, originally written \u0412\u042214, is a Russian high-strength alpha-beta titanium alloy in the Ti-Al-Mo-V system. For international purchasing, VT14 or VT-14 is the preferred English transliteration; BT-14 is only a common visual and search variant. GOST 19807-91 identifies the grade and chemistry, while the applicable plate standard, OST, TU, drawing, and purchase order define dimensions, condition, properties, inspection, and certification.<\/p>\n

\"\"<\/p>\n

If your drawing calls for \u0412\u042214 titanium plate, the first buying decision is not simply thickness and quantity. You need to confirm the exact alloy designation, plate product standard, delivery condition, required mechanical properties, and inspection scope.<\/p>\n

In English-language inquiries, this material is best written as VT14 or VT-14. The form BT-14 is common in online searches because the Cyrillic letter \u0412 looks like a Latin B, but it should not replace the original grade on contractual documents.<\/p>\n

VT14 is a Russian high-strength, heat-treatable alpha-beta titanium alloy in the Ti-Al-Mo-V system. It is often described nominally as Ti-4.5Al-3Mo-1V.<\/p>\n

GOST 19807-91 identifies the alloy and controls its chemistry. Meanwhile, the plate standard, sector standard, technical specification, drawing, and purchase order define the actual product the buyer will receive.<\/p>\n

That distinction matters. A certificate showing VT14 chemistry alone does not prove that a plate meets the required dimensions, heat-treatment condition, tensile properties, ultrasonic acceptance level, or industry qualification.<\/p>\n

 <\/p>\n

Is the Correct Name BT-14 or VT14 Titanium Plate?<\/h2>\n

The original Russian grade is \u0412\u042214<\/strong>. Its first character is the Cyrillic letter \u201c\u0412,\u201d which is transliterated as V<\/strong>, not B.<\/p>\n

Therefore, VT14 titanium plate<\/strong> is the preferred English wording. VT-14<\/strong> is also widely understood.<\/p>\n\n\n\n\n\n\n\n
\u6307\u5b9a<\/th>\nHow to use it<\/th>\nPurchasing note<\/th>\n<\/tr>\n
\u0412\u042214<\/td>\nOriginal Cyrillic grade<\/td>\nKeep this designation when it appears on the approved drawing or specification<\/td>\n<\/tr>\n
VT14<\/td>\nPreferred English transliteration<\/td>\nBest primary term for quotations, websites, and international communication<\/td>\n<\/tr>\n
VT-14<\/td>\nAccepted hyphenated form<\/td>\nConfirm that it refers to \u0412\u042214 in the purchase order<\/td>\n<\/tr>\n
BT-14<\/td>\nCommon visual or search variant<\/td>\nUseful as a secondary search term, but not the preferred contractual designation<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

When you send us an inquiry containing \u201cBT-14,\u201d we do not silently assume the grade.<\/p>\n

We confirm whether the drawing means Russian \u0412\u042214<\/strong>, because one character can change how a mill, laboratory, or third-party inspector interprets the order.<\/p>\n

What Is VT14 Titanium Alloy?<\/h2>\n

VT14 is a wrought, two-phase alpha + beta titanium alloy<\/strong> containing aluminum, molybdenum, and vanadium.<\/p>\n

Aluminum supports the alpha phase, while molybdenum and vanadium act as beta stabilizers. This balance allows the alloy to be supplied in an annealed condition or strengthened through a qualified solution-treatment, quenching, and aging route.<\/p>\n

The alloy is often summarized as Ti-4.5Al-3Mo-1V. However, a nominal formula is not an acceptance specification.<\/p>\n

The heat analysis must meet the chemistry limits required by the applicable edition of GOST 19807-91 and any tighter product or customer specification.<\/p>\n

VT14 is associated with high-strength welded parts, structural assemblies, pressure housings, and components that retain strength at moderately elevated temperatures.<\/p>\n

However, the alloy name does not approve a finished part for aerospace, pressure-equipment, defense, or another regulated service. The designer and end user must approve the standard, product form, heat treatment, manufacturing route, and finished-component qualification.<\/p>\n

Which Standards Apply to VT14 Plate?<\/h2>\n

This question prevents some of the most expensive purchasing misunderstandings.<\/p>\n

GOST 19807-91 is a grade and chemical-composition standard. It is not, by itself, a complete titanium plate purchase specification.<\/strong><\/p>\n\n\n\n\n\n\n\n\n
Document<\/td>\nMain role<\/td>\nWhat the buyer should confirm<\/td>\n<\/tr>\n
GOST 19807-91<\/td>\nWrought titanium grade designation and chemical composition<\/td>\nEdition and amendment, VT14 chemistry, and the special aluminum rule for thin flat-rolled product<\/td>\n<\/tr>\n
GOST 23755-79<\/td>\nTechnical specifications for titanium and titanium-alloy plates<\/td>\nCurrent amendment and correction level, dimensions, tolerances, condition, surface, testing, marking, and acceptance<\/td>\n<\/tr>\n
OST 1 90024-94<\/td>\nSector standard for titanium-alloy plate, including VT14 plate data<\/td>\nWhether the drawing or end user requires this OST and which amendments apply<\/td>\n<\/tr>\n
OST 1 90218-76<\/td>\nSector standard for titanium-alloy sheet<\/td>\nRelevant to thin sheet, not a substitute for plate requirements<\/td>\n<\/tr>\n
Customer drawing, TU, or approved specification<\/td>\nProject-specific technical contract<\/td>\nExact size, condition, properties, NDT, sampling, certification, and approval requirements<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Change No. 4 to GOST 23755-79 was put into effect in the Russian Federation on February 1, 2024. Subsequent corrections to the change were also published in 2024.<\/p>\n

Buyers should therefore confirm the consolidated current text rather than relying on an older standalone copy.<\/p>\n

For the same reason, writing only \u201cGOST 23755\u201d on an RFQ is not enough. The parties should identify the applicable amendment and correction level, together with any project-specific departures, before quotation.<\/p>\n

If your legacy drawing cites an OST or TU that is difficult to obtain, send the complete designation and amendment level.<\/p>\n

We can review the sourcing route, but the design authority must decide whether another standard is acceptable.<\/p>\n

\"\"<\/p>\n

VT14 Chemical Composition According to GOST 19807-91<\/h2>\n

The following table summarizes the VT14 limits in GOST 19807-91.<\/p>\n

Titanium is the balance. A single value represents a maximum unless the standard provides a range.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u30a8\u30ec\u30e1\u30f3\u30c8<\/td>\nMass fraction, %<\/td>\nPurchasing significance<\/td>\n<\/tr>\n
Titanium, Ti<\/td>\n\u30d0\u30e9\u30f3\u30b9<\/td>\nBase metal<\/td>\n<\/tr>\n
Aluminum, Al<\/td>\n3.5-6.3*<\/td>\nAlpha stabilizer; see the flat-product rule below<\/td>\n<\/tr>\n
Vanadium, V<\/td>\n0.9-1.9<\/td>\nBeta stabilizer<\/td>\n<\/tr>\n
Molybdenum, Mo<\/td>\n2.5-3.8<\/td>\nBeta stabilizer and strength contributor<\/td>\n<\/tr>\n
Tungsten, W<\/td>\n0.30 max when substituting for Mo<\/td>\nPartial substitution is permitted; combined Mo + W must not exceed the specified upper limit for Mo<\/td>\n<\/tr>\n
Zirconium, Zr<\/td>\n0.30 max<\/td>\nControlled limit<\/td>\n<\/tr>\n
Silicon, Si<\/td>\n0.15 max<\/td>\nControlled limit<\/td>\n<\/tr>\n
Iron, Fe<\/td>\n0.25 max<\/td>\nControlled impurity<\/td>\n<\/tr>\n
Oxygen, O<\/td>\n0.15 max<\/td>\nInterstitial element with a strong effect on strength and ductility<\/td>\n<\/tr>\n
Hydrogen, H<\/td>\n0.015 max*<\/td>\nProduct-level testing and reporting are controlled by the applicable semi-finished-product document<\/td>\n<\/tr>\n
Nitrogen, N<\/td>\n0.05 max<\/td>\nControlled interstitial element<\/td>\n<\/tr>\n
Carbon, C<\/td>\n0.10 max<\/td>\nControlled interstitial element<\/td>\n<\/tr>\n
Total other impurities<\/td>\n0.30 max<\/td>\nAggregate limit under the standard<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Molybdenum and Tungsten Substitution Rule<\/h3>\n

GOST 19807-91 permits partial replacement of molybdenum by tungsten up to 0.3%, provided that the combined Mo + W content does not exceed the specified upper limit for molybdenum.<\/p>\n

Tungsten used under this rule should be assessed as an allowed substitution, rather than silently treated as an unspecified impurity.<\/p>\n

Hydrogen Reporting Note<\/h3>\n

The original 1991 text stated that the listed hydrogen mass fraction applied to ingots.<\/p>\n

Amendment No. 1 replaced that note and states that hydrogen is specified in the normative documentation for the particular type of semi-finished product.<\/p>\n

Product-level hydrogen testing, reporting, and acceptance should therefore follow the applicable plate standard, OST, TU, drawing, and purchase order.<\/p>\n

Special Aluminum Rule for VT14 Flat-Rolled Products<\/h3>\n

For VT14 flat-rolled products with a thickness up to 10 mm, the aluminum content shall be 3.5-4.5%<\/strong>.<\/p>\n

For other semi-finished products, it shall be 4.5-6.3%<\/strong>.<\/p>\n

This special rule is easy to miss when a buyer copies only the general composition row into an RFQ.<\/p>\n

For final acceptance, use the certified heat analysis and governing purchase specification.<\/p>\n

Handheld PMI can help confirm major alloying elements such as aluminum, molybdenum, and vanadium. Nevertheless, it cannot replace suitable laboratory methods for oxygen, hydrogen, nitrogen, and carbon.<\/p>\n

VT14 Plate and VT14 Sheet Are Not the Same Product Form<\/h2>\n

Buyers sometimes use \u201csheet\u201d and \u201cplate\u201d interchangeably.<\/p>\n

For VT14, that can connect an order to the wrong dimensional range and mechanical-property table. The governing document must identify the intended product form.<\/p>\n

The values below are published by the All-Russian Scientific Research Institute of Aviation Materials, VIAM, for the stated OST conditions at 20\u00b0C.<\/p>\n

They are specification-related reference values, not a promise for every VT14 item offered in the market.<\/p>\n\n\n\n\n\n\n\n
Product form and condition<\/td>\nThickness covered by the cited VIAM data<\/td>\nUltimate tensile strength<\/td>\n\u4f38\u3073<\/td>\n<\/tr>\n
Plate, annealed, OST 1 90024-94<\/td>\n11-60 mm<\/td>\n835-1030 MPa<\/td>\n7% min<\/td>\n<\/tr>\n
Plate, quenched and aged, OST 1 90024-94<\/td>\n11-60 mm<\/td>\n1080-1230 MPa<\/td>\n4% min<\/td>\n<\/tr>\n
Sheet, annealed, OST 1 90218-76<\/td>\n0.6-5.0 mm<\/td>\n883-1050 MPa<\/td>\n8% min<\/td>\n<\/tr>\n
Sheet, quenched and artificially aged, OST 1 90218-76<\/td>\nOver 1.5-5.0 mm<\/td>\n1180 MPa min<\/td>\n6% min<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

The plate values come from the public VIAM VT14 plate page<\/a>.<\/p>\n

The sheet values are separately published on the VIAM VT14 sheet page<\/a> for OST 1 90218-76 at 20\u00b0C.<\/p>\n

Even with these public values, the governing document and amendment level must control contractual acceptance.<\/p>\n

These rows should never be mixed. For example, a 20 mm plate cannot be certified by applying a thin-sheet tensile requirement.<\/p>\n

Likewise, a chemistry certificate cannot establish a quenched-and-aged condition without the required heat-treatment and mechanical-test evidence.<\/p>\n

The cited public VIAM plate data list tensile strength and elongation. Yield strength, hardness, impact properties, or additional acceptance values must be taken from the governing OST, TU, drawing, or purchase order when required.<\/p>\n

Annealed or Quenched and Aged: Which VT14 Plate Condition Do You Need?<\/h2>\n

The annealed condition generally offers a more forgiving balance of strength, ductility, machining, and fabrication.<\/p>\n

A quenched-and-aged condition raises tensile strength, but it can reduce elongation and narrow the processing window.<\/p>\n

Your choice should follow the approved drawing and design calculation, not a simple preference for the highest number in the tensile table.<\/p>\n

Before we quote, it helps to answer four questions:<\/p>\n

    \n
  1. Does the drawing require annealed plate or heat-strengthened plate?<\/li>\n
  2. Are the mechanical properties required in the supplied plate, after buyer processing, or in the finished component?<\/li>\n
  3. Will the plate be welded, hot formed, or exposed to a later thermal cycle?<\/li>\n
  4. Does the specification require test coupons from a particular location or orientation?<\/li>\n<\/ol>\n

    VT14 properties depend on microstructure.<\/p>\n

    Published research identifies primary alpha, unstable beta, and martensitic alpha-prime or alpha-double-prime as important phases after different solution and quench histories.<\/p>\n

    This is why we do not recommend a universal heat-treatment recipe in a sales article.<\/p>\n

    The exact solution temperature, soaking time, quench method, aging cycle, furnace control, and test plan must follow the applicable OST, TU, drawing, or an approved process qualification for the actual thickness.<\/p>\n

    \"\"<\/p>\n

    Typical VT14 Titanium Plate Production and Supply Route<\/h2>\n

    A transparent route is more useful than a vague statement that the material is \u201cfactory produced.\u201d<\/p>\n

    For specialty VT14 orders, the source mill normally controls primary metal production. DAXUN manages the agreed commercial, processing, inspection, documentation, and logistics scope.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n
    Stage<\/td>\nTypical work<\/td>\nResponsible party and evidence<\/td>\n<\/tr>\n
    1. Contract review<\/td>\nConfirm \u0412\u042214\/VT14, standard editions, size, condition, tests, end use, and documents<\/td>\nDAXUN and buyer; agreed quotation and purchase order<\/td>\n<\/tr>\n
    2. Source approval<\/td>\nEvaluate mill capability, melting route, product-form experience, and traceability<\/td>\nDAXUN coordinates; buyer approval when required<\/td>\n<\/tr>\n
    3. Melting and ingot production<\/td>\nProduce the heat through the specified or approved titanium melting route<\/td>\nSource mill; heat number and melt records as contractually required<\/td>\n<\/tr>\n
    4. Breakdown and rolling<\/td>\nBreak down the ingot, prepare slab, hot roll the plate, and control reduction<\/td>\nSource mill; route and production records where required<\/td>\n<\/tr>\n
    5. Heat treatment<\/td>\nAnneal or perform the approved strengthening treatment<\/td>\nQualified source or processor; furnace and heat-treatment records if ordered<\/td>\n<\/tr>\n
    6. Surface conditioning and leveling<\/td>\nRemove scale or alpha case as specified, condition the surface, and control shape<\/td>\nSource mill or approved processor<\/td>\n<\/tr>\n
    7. Cut-to-size processing<\/td>\nSaw, waterjet, or otherwise cut to agreed dimensions and machining allowance<\/td>\nDAXUN or approved processor according to quotation scope<\/td>\n<\/tr>\n
    8. Inspection and release<\/td>\nCheck documents, dimensions, surface, chemistry, mechanical results, and ordered NDT<\/td>\nMill, DAXUN, laboratory, and third party as agreed<\/td>\n<\/tr>\n
    9. Marking and packing<\/td>\nMaintain heat and lot identity, protect edges and surfaces, and prepare export packing<\/td>\nDAXUN or shipping source under agreed packing instructions<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    Availability of VT14 plate is project-specific.<\/p>\n

    We confirm the source mill, melting route, thickness, width, length, condition, minimum quantity, test scope, and documentation before committing to delivery.<\/p>\n

    We do not describe every VT14 size as warehouse stock when it may require a dedicated mill production lot.<\/p>\n

    Inspection and Quality Control for VT14 Titanium Plate<\/h2>\n

    For a specialty Russian alloy, quality control should create a traceable chain from the purchase order to each released plate or cut piece.<\/p>\n

    The following plan can be adjusted to the governing standard and end-user requirements.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n
    Control point<\/td>\nWhat we review or arrange<\/td>\nWhat must be agreed before production<\/td>\n<\/tr>\n
    Standard and drawing review<\/td>\nGrade, product standard, amendment level, dimensions, condition, and supplementary requirements<\/td>\nOrder-of-precedence rule when documents conflict<\/td>\n<\/tr>\n
    Heat traceability<\/td>\nHeat number, lot number, plate identity, and transfer of markings to cut pieces<\/td>\nMarking format and traceability level<\/td>\n<\/tr>\n
    Chemical analysis<\/td>\nCertified heat analysis against GOST 19807-91 and any tighter requirement<\/td>\nSampling method, laboratory method, and retest rules<\/td>\n<\/tr>\n
    Mechanical testing<\/td>\nTensile properties in the specified condition<\/td>\nTest orientation, coupon location, frequency, temperature, and acceptance values<\/td>\n<\/tr>\n
    Dimensions and shape<\/td>\nThickness, width, length, flatness, edge condition, and cutting tolerance<\/td>\nMeasurement method and tolerance standard<\/td>\n<\/tr>\n
    Surface examination<\/td>\nVisual inspection for scale, pits, laps, cracks, grinding marks, and handling damage<\/td>\nSurface class, permitted dressing, and pickled or machined requirement<\/td>\n<\/tr>\n
    Ultrasonic testing<\/td>\nUT when required by the product standard, drawing, or purchase order<\/td>\nMethod, scanning coverage, reference blocks, acceptance class, and report format<\/td>\n<\/tr>\n
    Heat-treatment verification<\/td>\nCondition, furnace batch, cycle record, and connection to test results<\/td>\nRequired record detail and furnace-control requirements<\/td>\n<\/tr>\n
    Final document review<\/td>\nMatch test reports, quantities, dimensions, markings, and packing list<\/td>\nRequired certificate type, language, originals, and electronic copies<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    Third-party inspection can be discussed before quotation.<\/p>\n

    Please state the inspection body, witness points, hold points, test scope, report format, and acceptance criteria clearly.<\/p>\n

    Adding these requirements after the material has entered production can change both cost and lead time.<\/p>\n

    For high-consequence applications, the buyer may also request independent chemical analysis, additional tensile testing, macrostructure or microstructure evaluation, hardness testing, ultrasonic examination, or source surveillance.<\/p>\n

    These services are not automatically included unless the governing standard or purchase order requires them.<\/p>\n

    Cutting, Machining, Forming, and Welding Considerations<\/h2>\n

    VT14 is a high-strength alpha-beta alloy, so the fabrication plan deserves the same attention as the material certificate.<\/p>\n

    Machining<\/h3>\n

    Use a rigid setup, sharp tools, stable feed, and effective coolant.<\/p>\n

    Titanium conducts heat relatively slowly. Therefore, rubbing and tool dwell can concentrate heat near the cutting edge.<\/p>\n

    The final parameters should come from the machine shop\u2019s qualified process, plate condition, tool system, and section size.<\/p>\n

    \"\"<\/p>\n

    \u30ab\u30c3\u30c6\u30a3\u30f3\u30b0<\/h3>\n

    Sawing and waterjet cutting can support cut-to-size supply.<\/p>\n

    If a thermal cutting process is proposed, the buyer should define whether the heat-affected edge must be removed and how much machining allowance is needed.<\/p>\n

    We confirm the cutting method, tolerance, and edge condition in the quotation.<\/p>\n

    Forming<\/h3>\n

    Bend radius, forming temperature, rolling direction, springback allowance, and post-forming heat treatment depend on thickness and delivery condition.<\/p>\n

    A quenched-and-aged plate should not inherit forming rules developed for annealed sheet.<\/p>\n

    Welding<\/h3>\n

    VIAM describes VT14 as weldable by titanium welding methods.<\/p>\n

    In practice, joint cleanliness and inert-gas shielding remain critical because hot titanium readily absorbs oxygen and nitrogen.<\/p>\n

    The fabricator remains responsible for the welding procedure specification, procedure qualification, welder qualification, joint preparation, shielding, inspection, and acceptance of the completed assembly.<\/p>\n

    Supplying compliant VT14 plate does not certify the finished welded product.<\/p>\n

    Contamination Control<\/h3>\n

    Keep titanium away from carbon-steel dust, embedded iron, contaminated abrasives, oil, moisture, and dirty handling tools.<\/p>\n

    Dedicated or thoroughly cleaned tools help protect the prepared surface and completed weld.<\/p>\n

    Where Is VT14 Titanium Plate Used?<\/h2>\n

    Published VIAM information associates VT14 with load-bearing welded parts and assemblies, pressure housings, and service at temperatures up to 400\u00b0C.<\/p>\n

    Its catalog states service durations up to 10,000 hours in the annealed condition and up to 2,000 hours in the heat-strengthened condition.<\/p>\n

    These figures describe the cited material application context. They are not universal design allowables and do not replace component-specific calculations, environmental assessment, or regulatory approval.<\/p>\n

    Potential purchasing scenarios include:<\/p>\n