Titanium Ti-8Mo-8V-2Fe-3Al-F vs Ti-8Mo-8V-2Fe-3Al-ST
Titanium · Ti-8Mo-8V-2Fe-3Al temper comparison
Ti-8Mo-8V-2Fe-3Al-F and Ti-8Mo-8V-2Fe-3Al-ST are two conditions of the same titanium grade, Ti-8Mo-8V-2Fe-3Al: F (as fabricated) versus ST (solution annealed). The chemistry is identical, so every difference below comes from the condition. Ti-8Mo-8V-2Fe-3Al-F is the stronger of the two: yield strength 940 MPa (136 ksi) against 860 MPa (125 ksi) for Ti-8Mo-8V-2Fe-3Al-ST, about 9% more; tensile strength follows at 1,000 MPa (145 ksi) vs 900 MPa (131 ksi). In exchange, Ti-8Mo-8V-2Fe-3Al-ST is the more ductile: elongation 16% versus 10% for Ti-8Mo-8V-2Fe-3Al-F, and Ti-8Mo-8V-2Fe-3Al-F is harder (310 HB vs 280 HB). Ti-8Mo-8V-2Fe-3Al-F runs hotter in service (250°C vs 200°C continuous).
Ti-8Mo-8V-2Fe-3Al-FChoose it when strength drives the design, or when the part sees heat.
Ti-8Mo-8V-2Fe-3Al-STChoose it when the part is bent, formed or impact-loaded.
Ti-8Mo-8V-2Fe-3Al-F vs Ti-8Mo-8V-2Fe-3Al-ST: 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-8Mo-8V-2Fe-3Al-FTi-8Mo-8V-2Fe-3Al-ST
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Reduction in Area
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Hardness, Brinell
Hardness, Rockwell C
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 100 GPa14.5 Msi · Shear Modulus 42 GPa6.1 Msi · Bulk Modulus 108 GPa15.7 Msi · Poisson's Ratio 0.33
Physical
Density and transition temperatures.
Same in both: Density 4.9 g/cm³0.18 lb/in³ · Melting Point (Solidus) 1,600°C2,912 °F · Liquidus Temperature 1,650°C3,002 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Max Service Temperature (continuous)
Same in both: Specific Heat Capacity 500 J/kg·K0.12 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 9.2 µm/m·K5.1 µin/in·°F · Latent Heat of Fusion 360 J/g155 BTU/lb · Min Service Temperature -60°C-76 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.1 V · Corrosion Resistance 85 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Weldability
Same in both: Formability (cold) 55 / 100 · Polishability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 700 MJ/kg300,946 BTU/lb · Embodied Carbon (primary production) 45 kg CO₂/kg · Embodied Water 400 L/kg47.9 gal/lb · Typical Recycled Content 30%
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-8Mo-8V-2Fe-3Al-F vs Ti-8Mo-8V-2Fe-3Al-ST — frequently asked
Is Ti-8Mo-8V-2Fe-3Al-F stronger than Ti-8Mo-8V-2Fe-3Al-ST?
Yes. Ti-8Mo-8V-2Fe-3Al-F has a typical yield strength of 940 MPa (136 ksi) against 860 MPa (125 ksi) for Ti-8Mo-8V-2Fe-3Al-ST — about 9% more. Tensile strength is 1,000 MPa (145 ksi) vs 900 MPa (131 ksi).
Which condition does FabDigit quote by default, F or ST?
STA is the default Ti-8Mo-8V-2Fe-3Al condition in the FabDigit quote flow (neither F nor ST). 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-8Mo-8V-2Fe-3Al-F or Ti-8Mo-8V-2Fe-3Al-ST?
Ti-8Mo-8V-2Fe-3Al-ST. Its weldability rates good (55/100) against fair (50/100) for Ti-8Mo-8V-2Fe-3Al-F.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Ti-8Mo-8V-2Fe-3Al-F and Ti-8Mo-8V-2Fe-3Al-ST 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.