Titanium ERTi-12 vs ERTi-3
Titanium · grade comparison
Titanium ERTi-12 and ERTi-3 are both titanium grades. ERTi-12 is the stronger of the two: tensile strength 560 MPa (81.2 ksi) against 520 MPa (75.4 ksi) for ERTi-3, about 8% more. ERTi-3 is harder — 215 HV against 200 HV for ERTi-12 — which matters for wear surfaces and threads. ERTi-12 conducts heat better (19 W/m·K vs 16 W/m·K).
ERTi-12Choose it when strength drives the design.
ERTi-3Choose it when surface hardness matters.
ERTi-12 vs ERTi-3: 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
Shear Modulus
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Shear Strength
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Vickers
Compressive Strength
Same in both: Bulk Modulus 110 GPa16 Msi · Poisson's Ratio 0.34 · Elongation at Break 20% · Reduction in Area 38% · Hardness, Rockwell B 93 HRB
Physical
Density and transition temperatures.
Melting Point (Solidus)
Liquidus Temperature
Same in both: Density 4.51 g/cm³0.16 lb/in³
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Thermal Expansion (CTE, 20–100 °C)
Latent Heat of Fusion
Max Service Temperature (continuous)
Min Service Temperature
Same in both: Specific Heat Capacity 540 J/kg·K0.13 BTU/lb·°F
Electrical
Conductivity and insulation.
Electrical Conductivity
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
Brazeability / Solderability
Polishability
Same in both: Formability (cold) 55 / 100
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Water
Same in both: Embodied Carbon (primary production) 40 kg CO₂/kg · Typical Recycled Content 20%
Common Calculations
Ratios derived from the values above.
Specific Strength (UTS / density)
Specific Stiffness (E / density)
Modulus of Resilience
Thermal Diffusivity
Thermal Shock Resistance Index
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.
Manufacturing and finishing
| Capability | ERTi-12 | ERTi-3 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Both take the same 1 finish: Plasma Spray.
ERTi-12 vs ERTi-3 — frequently asked
Is ERTi-12 stronger than ERTi-3?
Yes. ERTi-12 has a typical tensile strength of 560 MPa (81.2 ksi) against 520 MPa (75.4 ksi) for ERTi-3 — about 8% more.
Which is cheaper, ERTi-12 or ERTi-3?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
When should I choose ERTi-12 over ERTi-3?
Pick ERTi-12 when strength drives the design. Pick ERTi-3 when surface hardness matters.
Ready to make it?
Upload a CAD file and FabDigit prices the part in ERTi-12 and ERTi-3 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.