Titanium Ti-6Al-2Sn-4Zr-2Mo-0.1Si As Welded vs Ti-6Al-2Sn-4Zr-2Mo-0.1Si-STA
Titanium · Ti-6Al-2Sn-4Zr-2Mo-0.1Si temper comparison
Ti-6Al-2Sn-4Zr-2Mo-0.1Si As Welded and Ti-6Al-2Sn-4Zr-2Mo-0.1Si-STA are two conditions of the same titanium grade, Ti-6Al-2Sn-4Zr-2Mo-0.1Si: As Welded (as-welded deposit) versus STA (solution treated and aged). The chemistry is identical, so every difference below comes from the condition. Ti-6Al-2Sn-4Zr-2Mo-0.1Si-STA is the stronger of the two: yield strength 1,000 MPa (145 ksi) against 900 MPa (131 ksi) for Ti-6Al-2Sn-4Zr-2Mo-0.1Si As Welded, about 11% more; tensile strength follows at 1,100 MPa (160 ksi) vs 980 MPa (142 ksi). Ti-6Al-2Sn-4Zr-2Mo-0.1Si-STA is the more ductile: elongation 12% versus 8% for Ti-6Al-2Sn-4Zr-2Mo-0.1Si As Welded, and Ti-6Al-2Sn-4Zr-2Mo-0.1Si-STA is harder (35 HRC vs 33 HRC).
Ti-6Al-2Sn-4Zr-2Mo-0.1Si-STAChoose it when strength drives the design, or when the part is bent, formed or impact-loaded.
Ti-6Al-2Sn-4Zr-2Mo-0.1Si As Welded vs Ti-6Al-2Sn-4Zr-2Mo-0.1Si-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-6Al-2Sn-4Zr-2Mo-0.1Si As WeldedTi-6Al-2Sn-4Zr-2Mo-0.1Si-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, Brinell
Hardness, Rockwell C
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 114 GPa16.5 Msi · Shear Modulus 44.5 GPa6.5 Msi · Bulk Modulus 107 GPa15.5 Msi · Poisson's Ratio 0.32
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.
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 · Max Service Temperature (continuous) 480°C896 °F · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 0.87 % IACS · Electrical Resistivity 1.98×10⁻⁶ Ω·m78 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -0.1 V
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability Rating (AISI 1212 = 100 %)
Formability (cold)
Same in both: Machinability 16 / 100 · Weldability 65 / 100 · Castability 30 / 100 · Brazeability / Solderability 35 / 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) 40 kg CO₂/kg · Embodied Water 800 L/kg95.9 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-6Al-2Sn-4Zr-2Mo-0.1Si As Welded vs Ti-6Al-2Sn-4Zr-2Mo-0.1Si-STA — frequently asked
Is Ti-6Al-2Sn-4Zr-2Mo-0.1Si-STA stronger than Ti-6Al-2Sn-4Zr-2Mo-0.1Si As Welded?
Yes. Ti-6Al-2Sn-4Zr-2Mo-0.1Si-STA has a typical yield strength of 1,000 MPa (145 ksi) against 900 MPa (131 ksi) for Ti-6Al-2Sn-4Zr-2Mo-0.1Si As Welded — about 11% more. Tensile strength is 1,100 MPa (160 ksi) vs 980 MPa (142 ksi).
Which condition does FabDigit quote by default, As Welded or STA?
Duplex Annealed is the default Ti-6Al-2Sn-4Zr-2Mo-0.1Si condition in the FabDigit quote flow (neither As Welded 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.
When should I choose Ti-6Al-2Sn-4Zr-2Mo-0.1Si As Welded over Ti-6Al-2Sn-4Zr-2Mo-0.1Si-STA?
Pick Ti-6Al-2Sn-4Zr-2Mo-0.1Si-STA when strength drives the design, or when the part is bent, formed or impact-loaded.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Ti-6Al-2Sn-4Zr-2Mo-0.1Si As Welded and Ti-6Al-2Sn-4Zr-2Mo-0.1Si-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.