Titanium Ti-12Mo-6Zr-2Fe-CW vs Ti-12Mo-6Zr-2Fe-STA
Titanium · Ti-12Mo-6Zr-2Fe temper comparison
Ti-12Mo-6Zr-2Fe-CW and Ti-12Mo-6Zr-2Fe-STA are two conditions of the same titanium grade, Ti-12Mo-6Zr-2Fe: CW (cold worked) versus STA (solution treated and aged). The chemistry is identical, so every difference below comes from the condition. Ti-12Mo-6Zr-2Fe-STA is the stronger of the two: yield strength 1,180 MPa (171 ksi) against 1,120 MPa (162 ksi) for Ti-12Mo-6Zr-2Fe-CW, about 5% more; tensile strength follows at 1,250 MPa (181 ksi) vs 1,180 MPa (171 ksi). In exchange, Ti-12Mo-6Zr-2Fe-CW is the more ductile: elongation 10% versus 9% for Ti-12Mo-6Zr-2Fe-STA, and Ti-12Mo-6Zr-2Fe-STA is harder (39 HRC vs 36 HRC). Ti-12Mo-6Zr-2Fe-STA is stiffer (95 GPa vs 83 GPa) and Ti-12Mo-6Zr-2Fe-STA runs hotter in service (300°C vs 200°C continuous).
Ti-12Mo-6Zr-2Fe-CWChoose it when the part is bent, formed or impact-loaded.
Ti-12Mo-6Zr-2Fe-STAChoose it when strength drives the design, or when the part sees heat.
Ti-12Mo-6Zr-2Fe-CW vs Ti-12Mo-6Zr-2Fe-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-12Mo-6Zr-2Fe-CWTi-12Mo-6Zr-2Fe-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
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Hardness, Rockwell C
Hardness, Vickers
Same in both: Shear Modulus 30 GPa4.4 Msi · Bulk Modulus 90 GPa13.1 Msi · Poisson's Ratio 0.33
Physical
Density and transition temperatures.
Same in both: Density 5 g/cm³0.18 lb/in³ · Melting Point (Solidus) 1,620°C2,948 °F · Liquidus Temperature 1,680°C3,056 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 6.8 W/m·K3.9 BTU/hr·ft·°F · Specific Heat Capacity 500 J/kg·K0.12 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 9 µm/m·K5 µin/in·°F · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Electrical Resistivity
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
Machinability Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Same in both: Castability 35 / 100 · Brazeability / Solderability 40 / 100 · Polishability 80 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 660 MJ/kg283,749 BTU/lb · Embodied Carbon (primary production) 42 kg CO₂/kg · Embodied Water 600 L/kg71.9 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.
Ti-12Mo-6Zr-2Fe-CW vs Ti-12Mo-6Zr-2Fe-STA — frequently asked
Is Ti-12Mo-6Zr-2Fe-STA stronger than Ti-12Mo-6Zr-2Fe-CW?
Yes. Ti-12Mo-6Zr-2Fe-STA has a typical yield strength of 1,180 MPa (171 ksi) against 1,120 MPa (162 ksi) for Ti-12Mo-6Zr-2Fe-CW — about 5% more. Tensile strength is 1,250 MPa (181 ksi) vs 1,180 MPa (171 ksi).
Which condition does FabDigit quote by default, CW or STA?
ST is the default Ti-12Mo-6Zr-2Fe condition in the FabDigit quote flow (neither CW 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 is easier to machine, Ti-12Mo-6Zr-2Fe-CW or Ti-12Mo-6Zr-2Fe-STA?
Ti-12Mo-6Zr-2Fe-CW. Its machinability rates poor (18/100) against not recommended (12/100) for Ti-12Mo-6Zr-2Fe-STA; for welding the order is Ti-12Mo-6Zr-2Fe-CW first (fair, 50/100) then Ti-12Mo-6Zr-2Fe-STA (fair, 45/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in Ti-12Mo-6Zr-2Fe-CW and Ti-12Mo-6Zr-2Fe-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.