Titanium ERTi-9-ANN vs ERTi-9 CWSR
Titanium · ERTi-9 temper comparison
ERTi-9-ANN and ERTi-9 CWSR are two conditions of the same titanium grade, ERTi-9: ANN (annealed) versus CWSR (cold worked and stress relieved wire). The chemistry is identical, so every difference below comes from the condition. ERTi-9 CWSR is the stronger of the two: yield strength 790 MPa (115 ksi) against 550 MPa (79.8 ksi) for ERTi-9-ANN, about 44% more; tensile strength follows at 900 MPa (131 ksi) vs 660 MPa (95.7 ksi). In exchange, ERTi-9-ANN is the more ductile: elongation 20% versus 12% for ERTi-9 CWSR, and ERTi-9 CWSR is harder (292 HB vs 240 HB).
ERTi-9-ANNChoose it when the part is bent, formed or impact-loaded.
ERTi-9 CWSRChoose it when strength drives the design.
ERTi-9-ANN vs ERTi-9 CWSR: 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.
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
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: Shear Modulus 44 GPa6.4 Msi · Bulk Modulus 100 GPa14.5 Msi · Poisson's Ratio 0.32 · Hardness, Rockwell B 100 HRB
Physical
Density and transition temperatures.
Same in both: Density 4.48 g/cm³0.16 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 544 J/kg·K0.13 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 9.4 µm/m·K5.2 µin/in·°F · Latent Heat of Fusion 295 J/g127 BTU/lb · Min Service Temperature -250°C-418 °F
Electrical
Conductivity and insulation.
Electrical Resistivity
Same in both: Electrical Conductivity 1.4 % IACS
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: Brazeability / Solderability 40 / 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) 45 kg CO₂/kg · Embodied Water 900 L/kg108 gal/lb · Typical Recycled Content 15%
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.
ERTi-9-ANN vs ERTi-9 CWSR — frequently asked
Is ERTi-9 CWSR stronger than ERTi-9-ANN?
Yes. ERTi-9 CWSR has a typical yield strength of 790 MPa (115 ksi) against 550 MPa (79.8 ksi) for ERTi-9-ANN — about 44% more. Tensile strength is 900 MPa (131 ksi) vs 660 MPa (95.7 ksi).
Which condition does FabDigit quote by default, ANN or CWSR?
AW is the default ERTi-9 condition in the FabDigit quote flow (neither ANN nor CWSR). 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 ERTi-9-ANN over ERTi-9 CWSR?
Pick ERTi-9-ANN when the part is bent, formed or impact-loaded. Pick ERTi-9 CWSR when strength drives the design.
Ready to make it?
Upload a CAD file and FabDigit prices the part in ERTi-9-ANN and ERTi-9 CWSR 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.