Titanium VT3-1
VT3-1 is a Russian/CIS-specification α–β titanium alloy with good elevated-temperature strength, stocked as annealed, ISO-annealed, STA, forged-annealed and hot-rolled bar.
Reference datasheet — VT3-1 is not in the instant-quote catalog. Upload your part and an engineer will quote it in this grade or suggest the closest stocked equivalent.
Values for the ANN condition
VT3-1 tempers and conditions
VT3-1 is supplied in 3 conditions, soft to hard. ANN is the default FabDigit quotes; the values on this page are for it.
Compare all 3 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Die forged / stamped, annealed | Typical delivery condition for compressor discs, blades and blanks; properties depend on forging direction and section size. | 930 | 1,030 | 12 | 33 HRC | 1.1 % IACS |
ANNDefault Annealed | Standard stocked condition for bar, forgings and rings; balanced strength, ductility and thermal stability. | 950 | 1,050 | 13 | 34 HRC | — |
Solution treated and aged | Choose for maximum room-temperature strength in sections up to ~40–60 mm; ductility, toughness and long-term thermal stability are reduced. | 1,100 | 1,200 | 10 | 39 HRC | — |
Supply forms, finishes and certifications
Ways VT3-1 is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
HR-BAR | Hot rolled/forged bar, annealed and descaled | Supply form |
ISO-ANN | Isothermal annealed | Certification |
What is VT3-1?
VT3-1 is a Russian/CIS-specification α–β titanium alloy with good elevated-temperature strength, stocked as annealed, ISO-annealed, STA, forged-annealed and hot-rolled bar. Default-condition properties are 950 MPa yield, 1050 MPa tensile, 13% elongation and 320 HB (34 HRC), with service to 450 °C, which makes it a standard choice for jet-engine compressor disks and blades in Russian-designed engines. Machinability is low (score 16), welding is only conditionally approved for load-bearing joints, and Western supply is limited. Ti-6Al-4V covers similar strength at lower temperature, with Ti-6Al-2Sn-4Zr-2Mo the closer high-temperature alternative. VT3-1 has a density of 4.5 g/cm³ (0.163 lb/in³), lighter than 64% of titanium grades. It melts at 1,600°C (2,912 °F). VT3-1 has a yield strength of 950 MPa (138 ksi) and a tensile strength of 1,050 MPa (152 ksi) — stronger than 88% of titanium grades. Elongation at break is 13% and the elastic modulus is 115 GPa (16.7 Msi).
What is VT3-1 used for?
- aeroengine compressor disks
- compressor blades
- high-temperature forgings
Advantages
- High strength — 950 MPa (138 ksi), better than 88% of titanium grades
- High service temperature — 450°C (842 °F), better than 87% of titanium grades
Limitations
- Low fracture toughness — 45 MPa·√m (41 ksi·√in), worse than 98% of titanium grades
- Difficult to weld — 45/100, worse than 92% of titanium grades
- Limited formability — 20/100, worse than 83% of titanium grades
VT3-1 properties
Typical room-temperature values for VT3-1-ANN; bars are the position among titanium grades.
Physical3
VT3-1 has a density of 4.5 g/cm³ (0.163 lb/in³), lighter than 64% of titanium grades. It melts at 1,600°C (2,912 °F).
Mechanical16
VT3-1 has a yield strength of 950 MPa (138 ksi) and a tensile strength of 1,050 MPa (152 ksi) — stronger than 88% of titanium grades. Elongation at break is 13% and the elastic modulus is 115 GPa (16.7 Msi).
Thermal6
VT3-1 is rated for continuous service to 450°C (842 °F). It conducts heat at 8 W/m·K (4.62 BTU/hr·ft·°F), better than 51% of titanium grades. Thermal expansion is 8.6 µm/m·K (4.78 µin/in·°F).
Electrical3
VT3-1 conducts electricity at 1.1 % IACS, worse than 67% of titanium grades.
Chemical & Environmental3
Corrosion resistance is excellent (85/100), worse than 93% of titanium grades.
Sustainability4
Producing a kilogram of VT3-1 takes about 650 MJ of energy and emits 42 kg of CO₂ — less than 75% of titanium grades. Typical recycled content is 25%.
Manufacturability8
VT3-1's machinability is poor (16/100, worse than 93% of titanium grades); weldability fair (45/100); formability poor (20/100).
Common Calculations5
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Strength versus weight in the titanium family
Yield strength against density for every titanium grade FabDigit runs. VT3-1 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with VT3-1
Is VT3-1 easy to machine?
Low speeds (~20–35 m/min carbide), heavy positive-rake tooling, rigid setups and flood coolant; avoid dwelling to prevent work hardening and fire risk from fine chips.
Can VT3-1 be welded?
GTAW/EBW/plasma in high-purity argon or vacuum with full back-purge; weld and HAZ lose ductility, so a post-weld anneal (≈600–650 °C) is normally required and the alloy is rated only conditionally weldable for load-bearing joints.
Can VT3-1 be formed, bent or molded?
Essentially a hot-working alloy — forge/roll at ≈900–1000 °C with controlled cooling; cold forming is limited to gentle bends with large radii, hot sizing preferred.
VT3-1 chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| Alα stabiliser | 5.5 – 7 | 6.2 |
| Mo | 2 – 3 | 2.5 |
| Crβ stabiliser | 0.8 – 2.3 | 1.6 |
| Fe | 0.2 – 0.7 | 0.45 |
| Sicreep resistance | 0.15 – 0.4 | 0.25 |
| Zrimpurity limit | ≤ 0.5 | |
| O | ≤ 0.15 | 0.12 |
| C | ≤ 0.1 | 0.05 |
| N | ≤ 0.05 | 0.02 |
| H | ≤ 0.02 | 0.01 |
| other, eachtotal ≤0.30 | ≤ 0.1 | |
| Ti | balance |
What surface finishes work on VT3-1?
Grind/pickle off alpha case after hot work; shot peening raises fatigue life, and colour anodising or ion nitriding is used for identification and anti-galling.
Surface treatments FabDigit runs on titanium parts — pick them in the quote configurator or call them out on the drawing. Each links to its datasheet in the surface-finish library (thickness, specs, call-out, material verdicts).
Thermal Spray
How much does VT3-1 cost?
VT3-1 is a high-cost titanium ($$$$), pricier than about 78% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
VT3-1 — frequently asked
What is VT3-1 used for?
VT3-1 is typically used for aeroengine compressor disks, compressor blades and high-temperature forgings. In short: 450 °C service titanium; compressor disk forging alloy; higher heat than Ti-6Al-4V.
What is the yield strength of VT3-1?
VT3-1 has a typical yield strength of 950 MPa (138 ksi) and a tensile strength of 1,050 MPa (152 ksi) — stronger than 88% of titanium grades. Strength varies by condition: see the 3 listed tempers.
Is VT3-1 easy to machine?
Not especially — machinability is rated poor (16/100, worse than 93% of titanium grades). Low speeds (~20–35 m/min carbide), heavy positive-rake tooling, rigid setups and flood coolant; avoid dwelling to prevent work hardening and fire risk from fine chips.
Can VT3-1 be welded?
With care — weldability is rated fair (45/100). GTAW/EBW/plasma in high-purity argon or vacuum with full back-purge; weld and HAZ lose ductility, so a post-weld anneal (≈600–650 °C) is normally required and the alloy is rated only conditionally weldable for load-bearing joints.
What surface finishes work on VT3-1?
Grind/pickle off alpha case after hot work; shot peening raises fatigue life, and colour anodising or ion nitriding is used for identification and anti-galling.
Can VT3-1 be formed, bent or molded?
Essentially a hot-working alloy — forge/roll at ≈900–1000 °C with controlled cooling; cold forming is limited to gentle bends with large radii, hot sizing preferred.
What is the maximum service temperature of VT3-1?
VT3-1 is rated for continuous use to about 450°C (842 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between VT3-1-ANN and VT3-1-STA?
ANN is the default condition — standard stocked condition for bar, forgings and rings; balanced strength, ductility and thermal stability. STA: choose for maximum room-temperature strength in sections up to ~40–60 mm; ductility, toughness and long-term thermal stability are reduced. Yield strength is 950 MPa in ANN versus 1,100 MPa in STA.
How much does VT3-1 cost?
VT3-1 is a high-cost titanium ($$$$), pricier than about 78% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
Sources
- GOST 19807 — Titanium and wrought titanium alloys, grades — Gosstandart (1991)
- GOST 26492 — Titanium alloy bars, technical requirements — Gosstandart (1985)
- GB/T 3620.1 — Designation and composition of titanium and titanium alloys (TC6) — SAC (2016)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys (CIS titanium alloys) — ASM International (1990)
- Materials Properties Handbook: Titanium Alloys — ASM International (1994)
Property data is compiled from published supplier and standards handbooks and normalised for comparison; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.