Titanium Ti-8Mo-8V-2Fe-3Al-STA vs Ti-8Mo-8V-2Fe-3Al STOA
Titanium · Ti-8Mo-8V-2Fe-3Al temper comparison
Ti-8Mo-8V-2Fe-3Al-STA and Ti-8Mo-8V-2Fe-3Al STOA are two conditions of the same titanium grade, Ti-8Mo-8V-2Fe-3Al: STA (solution treated and aged) versus STOA (solution treated and overaged). The chemistry is identical, so every difference below comes from the condition. Ti-8Mo-8V-2Fe-3Al-STA is the stronger of the two: yield strength 1,240 MPa (180 ksi) against 1,060 MPa (154 ksi) for Ti-8Mo-8V-2Fe-3Al STOA, about 17% more; tensile strength follows at 1,300 MPa (189 ksi) vs 1,130 MPa (164 ksi). In exchange, Ti-8Mo-8V-2Fe-3Al STOA is the more ductile: elongation 11% versus 8% for Ti-8Mo-8V-2Fe-3Al-STA, and Ti-8Mo-8V-2Fe-3Al-STA is harder (40 HRC vs 36 HRC).
Ti-8Mo-8V-2Fe-3Al-STAChoose it when strength drives the design.
Ti-8Mo-8V-2Fe-3Al STOAChoose it when the part is bent, formed or impact-loaded.
Ti-8Mo-8V-2Fe-3Al-STA vs Ti-8Mo-8V-2Fe-3Al STOA: 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-STATi-8Mo-8V-2Fe-3Al STOA
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)
Hardness, Rockwell C
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 110 GPa16 Msi · Shear Modulus 42 GPa6.1 Msi · Bulk Modulus 108 GPa15.7 Msi · Poisson's Ratio 0.33 · Compressive Strength 1,300 MPa189 ksi · Shear Strength 760 MPa110 ksi · Hardness, Brinell 370 HB
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.
Same in both: Thermal Conductivity 6.5 W/m·K3.8 BTU/hr·ft·°F · 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 · Max Service Temperature (continuous) 315°C599 °F · Min Service Temperature -60°C-76 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 1.2 % IACS · Electrical Resistivity 1.45×10⁻⁶ Ω·m57.1 µΩ·in
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
Same in both: Machinability Rating (AISI 1212 = 100 %) 12% · Weldability 35 / 100 · Formability (cold) 15 / 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-STA vs Ti-8Mo-8V-2Fe-3Al STOA — frequently asked
Is Ti-8Mo-8V-2Fe-3Al-STA stronger than Ti-8Mo-8V-2Fe-3Al STOA?
Yes. Ti-8Mo-8V-2Fe-3Al-STA has a typical yield strength of 1,240 MPa (180 ksi) against 1,060 MPa (154 ksi) for Ti-8Mo-8V-2Fe-3Al STOA — about 17% more. Tensile strength is 1,300 MPa (189 ksi) vs 1,130 MPa (164 ksi).
Which condition does FabDigit quote by default, STA or STOA?
STA is the default Ti-8Mo-8V-2Fe-3Al 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.
When should I choose Ti-8Mo-8V-2Fe-3Al-STA over Ti-8Mo-8V-2Fe-3Al STOA?
Pick Ti-8Mo-8V-2Fe-3Al-STA when strength drives the design. Pick Ti-8Mo-8V-2Fe-3Al STOA when the part is bent, formed or impact-loaded.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Ti-8Mo-8V-2Fe-3Al-STA and Ti-8Mo-8V-2Fe-3Al STOA 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.