Titanium Ti-3Al-8V-6Cr-4Mo-4Zr-CDA vs Ti-3Al-8V-6Cr-4Mo-4Zr-ST
Titanium · Ti-3Al-8V-6Cr-4Mo-4Zr temper comparison
Ti-3Al-8V-6Cr-4Mo-4Zr-CDA and Ti-3Al-8V-6Cr-4Mo-4Zr-ST are two conditions of the same titanium grade, Ti-3Al-8V-6Cr-4Mo-4Zr: CDA (cold drawn + aged) versus ST (solution annealed). The chemistry is identical, so every difference below comes from the condition. Ti-3Al-8V-6Cr-4Mo-4Zr-CDA is the stronger of the two: yield strength 1,420 MPa (206 ksi) against 850 MPa (123 ksi) for Ti-3Al-8V-6Cr-4Mo-4Zr-ST, about 67% more; tensile strength follows at 1,500 MPa (218 ksi) vs 900 MPa (131 ksi). In exchange, Ti-3Al-8V-6Cr-4Mo-4Zr-ST is the more ductile: elongation 18% versus 5% for Ti-3Al-8V-6Cr-4Mo-4Zr-CDA, and Ti-3Al-8V-6Cr-4Mo-4Zr-CDA is harder (45 HRC vs 32 HRC). Ti-3Al-8V-6Cr-4Mo-4Zr-CDA is stiffer (105 GPa vs 86 GPa) and Ti-3Al-8V-6Cr-4Mo-4Zr-CDA runs hotter in service (260°C vs 200°C continuous).
Ti-3Al-8V-6Cr-4Mo-4Zr-CDAChoose it when strength drives the design, or when the part sees heat.
Ti-3Al-8V-6Cr-4Mo-4Zr-STChoose it when the part is bent, formed or impact-loaded.
Ti-3Al-8V-6Cr-4Mo-4Zr-CDA vs Ti-3Al-8V-6Cr-4Mo-4Zr-ST: 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-3Al-8V-6Cr-4Mo-4Zr-CDATi-3Al-8V-6Cr-4Mo-4Zr-ST
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Elastic (Young's) Modulus
Shear Modulus
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Charpy V-Notch Impact (RT)
Hardness, Rockwell C
Same in both: Bulk Modulus 90 GPa13.1 Msi · Poisson's Ratio 0.32 · Reduction in Area 45% · Compressive Strength 880 MPa128 ksi · Shear Strength 570 MPa82.7 ksi · Hardness, Vickers 320 HV
Physical
Density and transition temperatures.
Same in both: Density 4.82 g/cm³0.17 lb/in³ · Melting Point (Solidus) 1,650°C3,002 °F · Liquidus Temperature 1,700°C3,092 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 7.6 W/m·K4.4 BTU/hr·ft·°F · Specific Heat Capacity 500 J/kg·K0.12 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 9.4 µm/m·K5.2 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 1.55×10⁻⁶ Ω·m61 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.1 V · Corrosion Resistance 92 / 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 %) 15% · Weldability 60 / 100 · Castability 20 / 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 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-3Al-8V-6Cr-4Mo-4Zr-CDA vs Ti-3Al-8V-6Cr-4Mo-4Zr-ST — frequently asked
Is Ti-3Al-8V-6Cr-4Mo-4Zr-CDA stronger than Ti-3Al-8V-6Cr-4Mo-4Zr-ST?
Yes. Ti-3Al-8V-6Cr-4Mo-4Zr-CDA has a typical yield strength of 1,420 MPa (206 ksi) against 850 MPa (123 ksi) for Ti-3Al-8V-6Cr-4Mo-4Zr-ST — about 67% more. Tensile strength is 1,500 MPa (218 ksi) vs 900 MPa (131 ksi).
Which condition does FabDigit quote by default, CDA or ST?
ST is the default Ti-3Al-8V-6Cr-4Mo-4Zr 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.
Which is easier to machine, Ti-3Al-8V-6Cr-4Mo-4Zr-CDA or Ti-3Al-8V-6Cr-4Mo-4Zr-ST?
Ti-3Al-8V-6Cr-4Mo-4Zr-ST. Its machinability rates poor (18/100) against not recommended (12/100) for Ti-3Al-8V-6Cr-4Mo-4Zr-CDA.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Ti-3Al-8V-6Cr-4Mo-4Zr-CDA and Ti-3Al-8V-6Cr-4Mo-4Zr-ST 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.