Titanium ERTi-15-ANN vs ERTi-15-ELI
Titanium · ERTi-15 temper comparison
ERTi-15-ANN and ERTi-15-ELI are two conditions of the same titanium grade, ERTi-15: ANN (annealed) versus ELI (eRTi-15A). The chemistry is identical, so every difference below comes from the condition. ERTi-15-ANN is the stronger of the two: yield strength 807 MPa (117 ksi) against 745 MPa (108 ksi) for ERTi-15-ELI, about 8% more; tensile strength follows at 861 MPa (125 ksi) vs 810 MPa (117 ksi). ERTi-15-ANN is harder — 33 HRC against 31 HRC for ERTi-15-ELI — which matters for wear surfaces and threads. ERTi-15-ANN runs hotter in service (480°C vs 425°C continuous).
ERTi-15-ANNChoose it when strength drives the design, or when surface hardness matters.
ERTi-15-ANN vs ERTi-15-ELI: 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.
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Reduction in Area
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell C
Same in both: Elastic (Young's) Modulus 110 GPa16 Msi · Shear Modulus 44 GPa6.4 Msi · Bulk Modulus 110 GPa16 Msi · Poisson's Ratio 0.31 · Compressive Strength 840 MPa122 ksi · Shear Strength 550 MPa79.8 ksi · Hardness, Vickers 335 HV
Physical
Density and transition temperatures.
Same in both: Density 4.48 g/cm³0.16 lb/in³ · Melting Point (Solidus) 1,590°C2,894 °F · Liquidus Temperature 1,650°C3,002 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Min Service Temperature
Same in both: Thermal Conductivity 7.8 W/m·K4.5 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 390 J/g168 BTU/lb
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 1.1 % IACS · Electrical Resistivity 1.57×10⁻⁶ Ω·m61.8 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.12 V · Corrosion Resistance 90 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Formability (cold)
Same in both: Machinability 22 / 100 · Machinability Rating (AISI 1212 = 100 %) 20% · Weldability 85 / 100 · 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) 42 kg CO₂/kg · Embodied Water 800 L/kg95.9 gal/lb · Typical Recycled Content 20%
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-15-ANN vs ERTi-15-ELI — frequently asked
Is ERTi-15-ANN stronger than ERTi-15-ELI?
Yes. ERTi-15-ANN has a typical yield strength of 807 MPa (117 ksi) against 745 MPa (108 ksi) for ERTi-15-ELI — about 8% more. Tensile strength is 861 MPa (125 ksi) vs 810 MPa (117 ksi).
Which condition does FabDigit quote by default, ANN or ELI?
AW is the default ERTi-15 condition in the FabDigit quote flow (neither ANN nor ELI). 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-15-ANN over ERTi-15-ELI?
Pick ERTi-15-ANN when strength drives the design, or when surface hardness matters.
Ready to make it?
Upload a CAD file and FabDigit prices the part in ERTi-15-ANN and ERTi-15-ELI 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.