Titanium Ti-8Al-1Mo-1V
UNS R54810 · GB TA11
Ti-8Al-1Mo-1V (UNS R54810, TA11) is a near-alpha titanium alloy with high aluminium content for creep resistance and stiffness, supplied in duplex-annealed, mill-annealed, solution-annealed, beta-annealed and STA conditions.
Reference datasheet — Ti-8Al-1Mo-1V 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 DA condition
Ti-8Al-1Mo-1V tempers and conditions
Ti-8Al-1Mo-1V is supplied in 4 conditions, soft to hard. DA is the default FabDigit quotes; the values on this page are for it.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Single Annealed | Sheet condition chosen when maximum ductility and forming/flatness are more important than creep strength. | 900 | 965 | 17 | 31 HRC | 0.9 % IACS |
Mill Annealed | Lowest-cost stocking condition for general bar and plate where full duplex-anneal creep certification is not required. | 925 | 985 | 16 | 32 HRC | 0.9 % IACS |
DADefault Duplex Annealed | Standard aerospace supply condition for sheet, bar and forgings (AMS 4915/4972): best balance of strength, creep resistance and toughness. | 950 | 1,000 | 15 | 33 HRC | — |
Solution treated and aged | Used on thin sections needing the highest room-temperature strength; toughness and thermal stability are reduced versus duplex anneal. | 1,030 | 1,100 | 11 | 36 HRC | — |
Supply forms, finishes and certifications
Ways Ti-8Al-1Mo-1V is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
BA | Beta Annealed | Surface finish |
What is Ti-8Al-1Mo-1V?
Ti-8Al-1Mo-1V (UNS R54810, TA11) is a near-alpha titanium alloy with high aluminium content for creep resistance and stiffness, supplied in duplex-annealed, mill-annealed, solution-annealed, beta-annealed and STA conditions. Typical duplex-annealed properties are 950 MPa yield, 1000 MPa tensile, 15% elongation and about 315 HB (33 HRC), with service to 450 °C, which is why it was used for jet engine compressor blades and discs. The limits are ordered alpha-2 embrittlement in weld metal, poor cold formability (bend radii 4–5t) and very low machinability (score 18). Ti-6Al-2Sn-4Zr-2Mo-0.1Si serves hotter sections. Ti-8Al-1Mo-1V has a density of 4.37 g/cm³ (0.158 lb/in³), lighter than 99% of titanium grades. It melts at 1,540°C (2,804 °F). Ti-8Al-1Mo-1V has a yield strength of 950 MPa (138 ksi) and a tensile strength of 1,000 MPa (145 ksi) — stronger than 88% of titanium grades. Elongation at break is 15% and the elastic modulus is 124 GPa (18 Msi).
What is Ti-8Al-1Mo-1V used for?
- jet engine compressor blades
- compressor discs
- high-temp airframe skins
Advantages
- Stiff — 124 GPa (18 Msi), better than 100% of titanium grades
- 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
- Poor heat conductor — 6.5 W/m·K (3.76 BTU/hr·ft·°F), worse than 99% of titanium grades
- Low electrical conductivity — 0.9 % IACS, worse than 99% of titanium grades
- Difficult to weld — 55/100, worse than 87% of titanium grades
Ti-8Al-1Mo-1V properties
Typical room-temperature values for Ti-8Al-1Mo-1V-DA; bars are the position among titanium grades.
Physical3
Ti-8Al-1Mo-1V has a density of 4.37 g/cm³ (0.158 lb/in³), lighter than 99% of titanium grades. It melts at 1,540°C (2,804 °F).
Mechanical16
Ti-8Al-1Mo-1V has a yield strength of 950 MPa (138 ksi) and a tensile strength of 1,000 MPa (145 ksi) — stronger than 88% of titanium grades. Elongation at break is 15% and the elastic modulus is 124 GPa (18 Msi).
Thermal6
Ti-8Al-1Mo-1V is rated for continuous service to 450°C (842 °F). It conducts heat at 6.5 W/m·K (3.76 BTU/hr·ft·°F), worse than 99% of titanium grades. Thermal expansion is 8.5 µm/m·K (4.72 µin/in·°F).
Electrical3
Ti-8Al-1Mo-1V conducts electricity at 0.9 % IACS, worse than 99% of titanium grades.
Chemical & Environmental3
Corrosion resistance is excellent (85/100), worse than 93% of titanium grades.
Sustainability4
Producing a kilogram of Ti-8Al-1Mo-1V takes about 700 MJ of energy and emits 45 kg of CO₂ — more than 74% of titanium grades. Typical recycled content is 25%.
Manufacturability7
Ti-8Al-1Mo-1V's machinability is poor (18/100, worse than 83% of titanium grades); weldability good (55/100); formability poor (30/100).
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. Ti-8Al-1Mo-1V is highlighted; hover a dot for its name, or open the interactive family chart.
Working with Ti-8Al-1Mo-1V
Is Ti-8Al-1Mo-1V easy to machine?
Machine like a hard Ti alloy: rigid setup, sharp uncoated-carbide or PVD tools, 20–35 m/min, heavy flood coolant, positive rake and no dwelling to avoid work hardening and fire risk from fine chips.
Can Ti-8Al-1Mo-1V be welded?
GTAW/EBW/laser weldable with full inert shielding and trailing gas; weld metal ordered α₂-embrittles, so stress relieve 540–650 °C and avoid highly restrained joints in creep-loaded parts.
Can Ti-8Al-1Mo-1V be formed, bent or molded?
Cold formability is poor (bend radii ≥4–5 t); hot form or size at 700–870 °C, and forge at 900–980 °C for duplex-anneal microstructure or above the ~1040 °C β transus for beta-annealed parts.
Ti-8Al-1Mo-1V 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 |
|---|---|---|
| Al | 7.35 – 8.35 | 8 |
| Mo | 0.75 – 1.25 | 1 |
| V | 0.75 – 1.25 | 1 |
| Fe | ≤ 0.3 | 0.1 |
| O | ≤ 0.12 | 0.08 |
| C | ≤ 0.08 | 0.02 |
| N | ≤ 0.05 | 0.01 |
| Hmax, product-form dependent (0.0125–0.015) | ≤ 0.02 | 0.01 |
| Ymax, when specified | ≤ 0.01 | |
| Other, each | ≤ 0.1 | |
| Other, total | ≤ 0.4 | |
| Ti | balance |
What surface finishes work on Ti-8Al-1Mo-1V?
Chemical mill / pickle in HNO3-HF to remove alpha case after hot work; shot-peen for fatigue, anodize per AMS 2488 or apply dry-film lube for galling and fretting control.
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
Equivalent designations
Standards and trade names that resolve to Titanium Ti-8Al-1Mo-1V in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- R54810
- GB (China)
- TA11
How much does Ti-8Al-1Mo-1V cost?
Ti-8Al-1Mo-1V 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.
Ti-8Al-1Mo-1V — frequently asked
What is Ti-8Al-1Mo-1V used for?
Ti-8Al-1Mo-1V is typically used for jet engine compressor blades, compressor discs and high-temp airframe skins. In short: highest-modulus near-alpha titanium; creep resistant to 450 °C; difficult to machine.
What is the yield strength of Ti-8Al-1Mo-1V?
Ti-8Al-1Mo-1V has a typical yield strength of 950 MPa (138 ksi) and a tensile strength of 1,000 MPa (145 ksi) — stronger than 88% of titanium grades. Strength varies by condition: see the 4 listed tempers.
Is Ti-8Al-1Mo-1V easy to machine?
Not especially — machinability is rated poor (18/100, worse than 83% of titanium grades). Machine like a hard Ti alloy: rigid setup, sharp uncoated-carbide or PVD tools, 20–35 m/min, heavy flood coolant, positive rake and no dwelling to avoid work hardening and fire risk from fine chips.
Can Ti-8Al-1Mo-1V be welded?
Yes — weldability is rated good (55/100). GTAW/EBW/laser weldable with full inert shielding and trailing gas; weld metal ordered α₂-embrittles, so stress relieve 540–650 °C and avoid highly restrained joints in creep-loaded parts.
What surface finishes work on Ti-8Al-1Mo-1V?
Chemical mill / pickle in HNO3-HF to remove alpha case after hot work; shot-peen for fatigue, anodize per AMS 2488 or apply dry-film lube for galling and fretting control.
Can Ti-8Al-1Mo-1V be formed, bent or molded?
Cold formability is poor (bend radii ≥4–5 t); hot form or size at 700–870 °C, and forge at 900–980 °C for duplex-anneal microstructure or above the ~1040 °C β transus for beta-annealed parts.
What is the maximum service temperature of Ti-8Al-1Mo-1V?
Ti-8Al-1Mo-1V 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 Ti-8Al-1Mo-1V-DA and Ti-8Al-1Mo-1V-STA?
DA is the default condition — standard aerospace supply condition for sheet, bar and forgings (AMS 4915/4972): best balance of strength, creep resistance and toughness. STA: used on thin sections needing the highest room-temperature strength; toughness and thermal stability are reduced versus duplex anneal. Yield strength is 950 MPa in DA versus 1,030 MPa in STA.
How much does Ti-8Al-1Mo-1V cost?
Ti-8Al-1Mo-1V 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
- AMS 4915 — Titanium Alloy Sheet, Strip and Plate 8Al-1Mo-1V, Duplex Annealed — SAE International (2018)
- AMS 4916 — Titanium Alloy Sheet 8Al-1Mo-1V, Single Annealed — SAE International (2018)
- AMS 4972/4973 — Titanium Alloy Bar and Forgings 8Al-1Mo-1V — SAE International (2017)
- Materials Properties Handbook: Titanium Alloys — ASM International (1994)
- ASM Handbook Vol.2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- MMPDS — Metallic Materials Properties Development and Standardization, Ti-8Al-1Mo-1V chapter — Battelle/FAA (2023)
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.