Titanium Ti-6Al-2Nb-1Ta-0.8Mo Annealed vs Ti-6Al-2Nb-1Ta-0.8Mo-STA
Titanium · Ti-6Al-2Nb-1Ta-0.8Mo temper comparison
Ti-6Al-2Nb-1Ta-0.8Mo Annealed and Ti-6Al-2Nb-1Ta-0.8Mo-STA are two conditions of the same titanium grade, Ti-6Al-2Nb-1Ta-0.8Mo: Annealed versus STA (solution treated and aged). The chemistry is identical, so every difference below comes from the condition. Ti-6Al-2Nb-1Ta-0.8Mo-STA is the stronger of the two: yield strength 865 MPa (125 ksi) against 780 MPa (113 ksi) for Ti-6Al-2Nb-1Ta-0.8Mo Annealed, about 11% more; tensile strength follows at 950 MPa (138 ksi) vs 860 MPa (125 ksi). In exchange, Ti-6Al-2Nb-1Ta-0.8Mo Annealed is the more ductile: elongation 15% versus 11% for Ti-6Al-2Nb-1Ta-0.8Mo-STA, and Ti-6Al-2Nb-1Ta-0.8Mo-STA is harder (33 HRC vs 30 HRC). On the shop floor, Ti-6Al-2Nb-1Ta-0.8Mo Annealed welds better (very good vs good).
Ti-6Al-2Nb-1Ta-0.8Mo AnnealedChoose it when the part is bent, formed or impact-loaded, or when it will be welded.
Ti-6Al-2Nb-1Ta-0.8Mo-STAChoose it when strength drives the design.
Ti-6Al-2Nb-1Ta-0.8Mo Annealed vs Ti-6Al-2Nb-1Ta-0.8Mo-STA: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all titanium grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
How to read these bars
- One bar per material. A full bar is the highest value among all titanium grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
Ti-6Al-2Nb-1Ta-0.8Mo AnnealedTi-6Al-2Nb-1Ta-0.8Mo-STA
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Reduction in Area
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Charpy V-Notch Impact (RT)
Hardness, Rockwell C
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 114 GPa16.5 Msi · Shear Modulus 44 GPa6.4 Msi · Bulk Modulus 108 GPa15.7 Msi · Poisson's Ratio 0.32 · Compressive Strength 800 MPa116 ksi · Shear Strength 540 MPa78.3 ksi · Hardness, Brinell 285 HB
Physical
Density and transition temperatures.
Same in both: Density 4.48 g/cm³0.16 lb/in³ · Melting Point (Solidus) 1,620°C2,948 °F · Liquidus Temperature 1,660°C3,020 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 7 W/m·K4 BTU/hr·ft·°F · Specific Heat Capacity 520 J/kg·K0.12 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 8.6 µm/m·K4.8 µin/in·°F · Latent Heat of Fusion 365 J/g157 BTU/lb · Max Service Temperature (continuous) 400°C752 °F · Min Service Temperature -253°C-423 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 1.1 % IACS · Electrical Resistivity 1.6×10⁻⁶ Ω·m63 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.1 V · Corrosion Resistance 95 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Weldability
Formability (cold)
Same in both: Machinability Rating (AISI 1212 = 100 %) 20% · Castability 30 / 100 · Brazeability / Solderability 35 / 100 · Polishability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 650 MJ/kg279,450 BTU/lb · Embodied Carbon (primary production) 42 kg CO₂/kg · Embodied Water 500 L/kg59.9 gal/lb · Typical Recycled Content 25%
Strength versus weight
Yield strength against density for every titanium grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
Ti-6Al-2Nb-1Ta-0.8Mo Annealed vs Ti-6Al-2Nb-1Ta-0.8Mo-STA — frequently asked
Is Ti-6Al-2Nb-1Ta-0.8Mo-STA stronger than Ti-6Al-2Nb-1Ta-0.8Mo Annealed?
Yes. Ti-6Al-2Nb-1Ta-0.8Mo-STA has a typical yield strength of 865 MPa (125 ksi) against 780 MPa (113 ksi) for Ti-6Al-2Nb-1Ta-0.8Mo Annealed — about 11% more. Tensile strength is 950 MPa (138 ksi) vs 860 MPa (125 ksi).
Which condition does FabDigit quote by default, Annealed or STA?
Annealed is the default Ti-6Al-2Nb-1Ta-0.8Mo condition in the FabDigit quote flow. The other condition is available on request or by drawing note — specify it in the material field or the part notes and the quote is priced for it.
Which welds better, Ti-6Al-2Nb-1Ta-0.8Mo Annealed or Ti-6Al-2Nb-1Ta-0.8Mo-STA?
Ti-6Al-2Nb-1Ta-0.8Mo Annealed. Its weldability rates very good (80/100) against good (65/100) for Ti-6Al-2Nb-1Ta-0.8Mo-STA.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Ti-6Al-2Nb-1Ta-0.8Mo Annealed and Ti-6Al-2Nb-1Ta-0.8Mo-STA side by side — material, machining time, tolerance and finish in one quote. Certified material data ships with the order on request.
Typical handbook values for the conditions named above, normalised for comparison. Hardness on non-Brinell scales is converted approximately for charting only. Request certified data with your order for design-critical properties.