Titanium Ti Grade 24 Duplex Annealed vs Ti Grade 24-STA
Titanium · Ti Grade 24 temper comparison
Ti Grade 24 Duplex Annealed and Ti Grade 24-STA are two conditions of the same titanium grade, Ti Grade 24: Duplex Annealed (925 °C air cool + 705 °C/2 h) versus STA (solution treated and aged). The chemistry is identical, so every difference below comes from the condition. Ti Grade 24-STA is the stronger of the two: yield strength 1,035 MPa (150 ksi) against 895 MPa (130 ksi) for Ti Grade 24 Duplex Annealed, about 16% more; tensile strength follows at 1,105 MPa (160 ksi) vs 965 MPa (140 ksi). In exchange, Ti Grade 24 Duplex Annealed is the more ductile: elongation 13% versus 10% for Ti Grade 24-STA, and Ti Grade 24-STA is harder (40 HRC vs 36 HRC). Ti Grade 24 Duplex Annealed runs hotter in service (400°C vs 315°C continuous). On the shop floor, Ti Grade 24 Duplex Annealed welds better (very good vs fair).
Ti Grade 24 Duplex AnnealedChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
Ti Grade 24-STAChoose it when strength drives the design.
Ti Grade 24 Duplex Annealed vs Ti Grade 24-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 24 Duplex AnnealedTi Grade 24-STA
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)
Charpy V-Notch Impact (RT)
Hardness, Rockwell C
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 114 GPa16.5 Msi · Shear Modulus 44 GPa6.4 Msi · Bulk Modulus 110 GPa16 Msi · Poisson's Ratio 0.34 · Hardness, Brinell 334 HB
Physical
Density and transition temperatures.
Same in both: Density 4.43 g/cm³0.16 lb/in³ · Melting Point (Solidus) 1,604°C2,919 °F · Liquidus Temperature 1,660°C3,020 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 6.7 W/m·K3.9 BTU/hr·ft·°F · Specific Heat Capacity 526 J/kg·K0.13 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 8.7 µm/m·K4.8 µin/in·°F · Latent Heat of Fusion 365 J/g157 BTU/lb · Min Service Temperature -196°C-321 °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 93 / 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 %) 22% · Castability 40 / 100 · Brazeability / Solderability 35 / 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 700 L/kg83.9 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 24 Duplex Annealed vs Ti Grade 24-STA — frequently asked
Is Ti Grade 24-STA stronger than Ti Grade 24 Duplex Annealed?
Yes. Ti Grade 24-STA has a typical yield strength of 1,035 MPa (150 ksi) against 895 MPa (130 ksi) for Ti Grade 24 Duplex Annealed — about 16% more. Tensile strength is 1,105 MPa (160 ksi) vs 965 MPa (140 ksi).
Which condition does FabDigit quote by default, Duplex Annealed or STA?
Annealed is the default Ti Grade 24 condition in the FabDigit quote flow (neither Duplex Annealed nor STA). 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 24 Duplex Annealed or Ti Grade 24-STA?
Ti Grade 24 Duplex Annealed. Its weldability rates very good (70/100) against fair (50/100) for Ti Grade 24-STA.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Ti Grade 24 Duplex Annealed and Ti Grade 24-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.