Titanium Ti Grade 35 Annealed vs Ti Grade 35-STA
Titanium · Ti Grade 35 temper comparison
Ti Grade 35 Annealed and Ti Grade 35-STA are two conditions of the same titanium grade, Ti Grade 35: Annealed versus STA (solution treated and aged). The chemistry is identical, so every difference below comes from the condition. Ti Grade 35-STA is the stronger of the two: yield strength 1,200 MPa (174 ksi) against 920 MPa (133 ksi) for Ti Grade 35 Annealed, about 30% more; tensile strength follows at 1,290 MPa (187 ksi) vs 990 MPa (144 ksi). In exchange, Ti Grade 35 Annealed is the more ductile: elongation 16% versus 9% for Ti Grade 35-STA, and Ti Grade 35-STA is harder (40 HRC vs 33 HRC). Ti Grade 35 Annealed runs hotter in service (350°C vs 315°C continuous). On the shop floor, Ti Grade 35 Annealed welds better (very good vs good).
Ti Grade 35 AnnealedChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
Ti Grade 35-STAChoose it when strength drives the design.
Ti Grade 35 Annealed vs Ti Grade 35-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 Grade 35 AnnealedTi Grade 35-STA
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
Shear Strength
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Charpy V-Notch Impact (RT)
Hardness, Rockwell C
Hardness, Vickers
Same in both: Shear Modulus 43 GPa6.2 Msi · Bulk Modulus 105 GPa15.2 Msi · Poisson's Ratio 0.32 · Compressive Strength 960 MPa139 ksi · Hardness, Brinell 315 HB
Physical
Density and transition temperatures.
Same in both: Density 4.54 g/cm³0.16 lb/in³ · Melting Point (Solidus) 1,590°C2,894 °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 7 W/m·K4 BTU/hr·ft·°F · Specific Heat Capacity 530 J/kg·K0.13 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 9.4 µm/m·K5.2 µin/in·°F · Latent Heat of Fusion 365 J/g157 BTU/lb · Min Service Temperature -100°C-148 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 1 % IACS · Electrical Resistivity 1.7×10⁻⁶ Ω·m66.9 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
Weldability
Formability (cold)
Same in both: Machinability Rating (AISI 1212 = 100 %) 20% · Castability 30 / 100 · Brazeability / Solderability 45 / 100 · Polishability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 680 MJ/kg292,348 BTU/lb · Embodied Carbon (primary production) 44 kg CO₂/kg · Embodied Water 480 L/kg57.5 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 Grade 35 Annealed vs Ti Grade 35-STA — frequently asked
Is Ti Grade 35-STA stronger than Ti Grade 35 Annealed?
Yes. Ti Grade 35-STA has a typical yield strength of 1,200 MPa (174 ksi) against 920 MPa (133 ksi) for Ti Grade 35 Annealed — about 30% more. Tensile strength is 1,290 MPa (187 ksi) vs 990 MPa (144 ksi).
Which condition does FabDigit quote by default, Annealed or STA?
Annealed is the default Ti Grade 35 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 Grade 35 Annealed or Ti Grade 35-STA?
Ti Grade 35 Annealed. Its weldability rates very good (70/100) against good (55/100) for Ti Grade 35-STA.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Ti Grade 35 Annealed and Ti Grade 35-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.