Titanium IMI 834-ANN vs IMI 834-STA
Titanium · IMI 834 temper comparison
IMI 834-ANN and IMI 834-STA are two conditions of the same titanium grade, IMI 834: ANN (annealed) versus STA (solution treated and aged). The chemistry is identical, so every difference below comes from the condition. IMI 834-STA is the stronger of the two: yield strength 910 MPa (132 ksi) against 850 MPa (123 ksi) for IMI 834-ANN, about 7% more; tensile strength follows at 1,030 MPa (149 ksi) vs 960 MPa (139 ksi). In exchange, IMI 834-ANN is the more ductile: elongation 14% versus 12% for IMI 834-STA, and IMI 834-STA is harder (34 HRC vs 32 HRC).
IMI 834-ANNChoose it when the part is bent, formed or impact-loaded.
IMI 834-STAChoose it when strength drives the design.
IMI 834-ANN vs IMI 834-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.
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 120 GPa17.4 Msi · Shear Modulus 45 GPa6.5 Msi · Bulk Modulus 110 GPa16 Msi · Poisson's Ratio 0.32 · Compressive Strength 960 MPa139 ksi · Shear Strength 640 MPa92.8 ksi · Charpy V-Notch Impact (RT) 13 J9.6 ft·lbf · Hardness, Brinell 320 HB
Physical
Density and transition temperatures.
Same in both: Density 4.55 g/cm³0.16 lb/in³ · Melting Point (Solidus) 1,550°C2,822 °F · Liquidus Temperature 1,620°C2,948 °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) 9.7 µm/m·K5.4 µin/in·°F · Latent Heat of Fusion 325 J/g140 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
Formability (cold)
Same in both: Machinability Rating (AISI 1212 = 100 %) 12% · Weldability 40 / 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 800 L/kg95.9 gal/lb · Typical Recycled Content 10%
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.
IMI 834-ANN vs IMI 834-STA — frequently asked
Is IMI 834-STA stronger than IMI 834-ANN?
Yes. IMI 834-STA has a typical yield strength of 910 MPa (132 ksi) against 850 MPa (123 ksi) for IMI 834-ANN — about 7% more. Tensile strength is 1,030 MPa (149 ksi) vs 960 MPa (139 ksi).
Which condition does FabDigit quote by default, ANN or STA?
STA is the default IMI 834 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 IMI 834-ANN over IMI 834-STA?
Pick IMI 834-ANN when the part is bent, formed or impact-loaded. Pick IMI 834-STA when strength drives the design.
Ready to make it?
Upload a CAD file and FabDigit prices the part in IMI 834-ANN and IMI 834-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.