Titanium Ti Grade 15 Annealed vs Ti Grade 15 CW-SR
Titanium · Ti Grade 15 temper comparison
Ti Grade 15 Annealed and Ti Grade 15 CW-SR are two conditions of the same titanium grade, Ti Grade 15: Annealed versus CW-SR (cold worked and stress relieved). The chemistry is identical, so every difference below comes from the condition. Ti Grade 15 CW-SR is the stronger of the two: yield strength 560 MPa (81.2 ksi) against 450 MPa (65.3 ksi) for Ti Grade 15 Annealed, about 24% more; tensile strength follows at 640 MPa (92.8 ksi) vs 550 MPa (79.8 ksi). In exchange, Ti Grade 15 Annealed is the more ductile: elongation 20% versus 14% for Ti Grade 15 CW-SR, and Ti Grade 15 CW-SR is harder (240 HB vs 200 HB).
Ti Grade 15 AnnealedChoose it when the part is bent, formed or impact-loaded.
Ti Grade 15 CW-SRChoose it when strength drives the design.
Ti Grade 15 Annealed vs Ti Grade 15 CW-SR: 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 Grade 15 AnnealedTi Grade 15 CW-SR
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)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 105 GPa15.2 Msi · Shear Modulus 45 GPa6.5 Msi · Bulk Modulus 110 GPa16 Msi · Poisson's Ratio 0.34 · Compressive Strength 480 MPa69.6 ksi · Shear Strength 380 MPa55.1 ksi · Fracture Toughness (K_IC) 70 MPa·√m63.7 ksi·√in · Charpy V-Notch Impact (RT) 22 J16.2 ft·lbf
Physical
Density and transition temperatures.
Same in both: Density 4.51 g/cm³0.16 lb/in³ · Melting Point (Solidus) 1,650°C3,002 °F · Liquidus Temperature 1,668°C3,034 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 16.4 W/m·K9.5 BTU/hr·ft·°F · Specific Heat Capacity 523 J/kg·K0.12 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 8.8 µm/m·K4.9 µin/in·°F · Latent Heat of Fusion 295 J/g127 BTU/lb · Min Service Temperature -250°C-418 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 3.1 % IACS · Electrical Resistivity 5.6×10⁻⁷ Ω·m22 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.05 V · Corrosion Resistance 96 / 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 %) 30% · Weldability 85 / 100 · Castability 30 / 100 · Brazeability / Solderability 45 / 100 · Polishability 65 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 620 MJ/kg266,552 BTU/lb · Embodied Carbon (primary production) 38 kg CO₂/kg · Embodied Water 900 L/kg108 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 Grade 15 Annealed vs Ti Grade 15 CW-SR — frequently asked
Is Ti Grade 15 CW-SR stronger than Ti Grade 15 Annealed?
Yes. Ti Grade 15 CW-SR has a typical yield strength of 560 MPa (81.2 ksi) against 450 MPa (65.3 ksi) for Ti Grade 15 Annealed — about 24% more. Tensile strength is 640 MPa (92.8 ksi) vs 550 MPa (79.8 ksi).
Which condition does FabDigit quote by default, Annealed or CW-SR?
Annealed is the default Ti Grade 15 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.
When should I choose Ti Grade 15 Annealed over Ti Grade 15 CW-SR?
Pick Ti Grade 15 Annealed when the part is bent, formed or impact-loaded. Pick Ti Grade 15 CW-SR when strength drives the design.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Ti Grade 15 Annealed and Ti Grade 15 CW-SR 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.