Titanium VT3-1-ANN vs VT3-1-STA
Titanium · VT3-1 temper comparison
VT3-1-ANN and VT3-1-STA are two conditions of the same titanium grade, VT3-1: ANN (annealed) versus STA (solution treated and aged). The chemistry is identical, so every difference below comes from the condition. VT3-1-STA is the stronger of the two: yield strength 1,100 MPa (160 ksi) against 950 MPa (138 ksi) for VT3-1-ANN, about 16% more; tensile strength follows at 1,200 MPa (174 ksi) vs 1,050 MPa (152 ksi). In exchange, VT3-1-ANN is the more ductile: elongation 13% versus 10% for VT3-1-STA, and VT3-1-STA is harder (360 HB vs 320 HB). VT3-1-ANN runs hotter in service (450°C vs 400°C continuous).
VT3-1-ANNChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
VT3-1-STAChoose it when strength drives the design.
VT3-1-ANN vs VT3-1-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.
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Elastic (Young's) Modulus
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, Brinell
Hardness, Rockwell C
Hardness, Vickers
Same in both: Shear Modulus 44 GPa6.4 Msi · Bulk Modulus 105 GPa15.2 Msi · Poisson's Ratio 0.32 · Compressive Strength 1,000 MPa145 ksi · Shear Strength 640 MPa92.8 ksi
Physical
Density and transition temperatures.
Same in both: Density 4.5 g/cm³0.16 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.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 8 W/m·K4.6 BTU/hr·ft·°F · Specific Heat Capacity 540 J/kg·K0.13 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 8.6 µm/m·K4.8 µin/in·°F · Latent Heat of Fusion 360 J/g155 BTU/lb · Min Service Temperature -196°C-321 °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) -0.05 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 %) 18% · Weldability 45 / 100 · Formability (cold) 20 / 100 · Castability 25 / 100 · Brazeability / Solderability 40 / 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 1,200 L/kg144 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.
VT3-1-ANN vs VT3-1-STA — frequently asked
Is VT3-1-STA stronger than VT3-1-ANN?
Yes. VT3-1-STA has a typical yield strength of 1,100 MPa (160 ksi) against 950 MPa (138 ksi) for VT3-1-ANN — about 16% more. Tensile strength is 1,200 MPa (174 ksi) vs 1,050 MPa (152 ksi).
Which condition does FabDigit quote by default, ANN or STA?
ANN is the default VT3-1 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 VT3-1-ANN over VT3-1-STA?
Pick VT3-1-ANN when the part is bent, formed or impact-loaded, or when the part sees heat. Pick VT3-1-STA when strength drives the design.
Ready to make it?
Upload a CAD file and FabDigit prices the part in VT3-1-ANN and VT3-1-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.