Titanium Ti-6242-STA vs Ti-6242 Triplex Annealed
Titanium · Ti-6242 temper comparison
Ti-6242-STA and Ti-6242 Triplex Annealed are two conditions of the same titanium grade, Ti-6242: STA (solution treated and aged) versus Triplex Annealed (three-step anneal for forgings/discs). The chemistry is identical, so every difference below comes from the condition. Ti-6242-STA is the stronger of the two: yield strength 1,000 MPa (145 ksi) against 930 MPa (135 ksi) for Ti-6242 Triplex Annealed, about 8% more; tensile strength follows at 1,100 MPa (160 ksi) vs 1,000 MPa (145 ksi). Ti-6242-STA is harder — 35 HRC against 32 HRC for Ti-6242 Triplex Annealed — which matters for wear surfaces and threads.
Ti-6242-STAChoose it when strength drives the design, or when surface hardness matters.
Ti-6242-STA vs Ti-6242 Triplex Annealed: 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-6242-STATi-6242 Triplex Annealed
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)
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 106 GPa15.4 Msi · Poisson's Ratio 0.32 · Compressive Strength 965 MPa140 ksi · Shear Strength 640 MPa92.8 ksi · Hardness, Brinell 310 HB
Physical
Density and transition temperatures.
Same in both: Density 4.54 g/cm³0.16 lb/in³ · Melting Point (Solidus) 1,650°C3,002 °F · Liquidus Temperature 1,705°C3,101 °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 460 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 7.7 µm/m·K4.3 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 1.1 % 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) -0.08 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 %) 20% · Weldability 60 / 100 · Castability 30 / 100 · Brazeability / Solderability 35 / 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) 44 kg CO₂/kg · Embodied Water 520 L/kg62.3 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-6242-STA vs Ti-6242 Triplex Annealed — frequently asked
Is Ti-6242-STA stronger than Ti-6242 Triplex Annealed?
Yes. Ti-6242-STA has a typical yield strength of 1,000 MPa (145 ksi) against 930 MPa (135 ksi) for Ti-6242 Triplex Annealed — about 8% more. Tensile strength is 1,100 MPa (160 ksi) vs 1,000 MPa (145 ksi).
Which condition does FabDigit quote by default, STA or Triplex Annealed?
O is the default Ti-6242 condition in the FabDigit quote flow (neither STA nor Triplex Annealed). 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-6242-STA over Ti-6242 Triplex Annealed?
Pick Ti-6242-STA when strength drives the design, or when surface hardness matters.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Ti-6242-STA and Ti-6242 Triplex Annealed 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.