Titanium ERTi-15 vs ERTi-5
Titanium · grade comparison
Titanium ERTi-15 and ERTi-5 are both titanium grades. ERTi-5 is the stronger of the two: yield strength 895 MPa (130 ksi) against 815 MPa (118 ksi) for ERTi-15, about 10% more; tensile strength follows at 965 MPa (140 ksi) vs 880 MPa (128 ksi). In exchange, ERTi-15 is the more ductile: elongation 11% versus 8% for ERTi-5. ERTi-15 runs hotter in service (480°C vs 350°C continuous) and ERTi-15 conducts heat better (7.8 W/m·K vs 6.7 W/m·K). On the shop floor, ERTi-15 welds better (excellent vs very good).
ERTi-15Choose it when the part is bent, formed or impact-loaded, or when the part sees heat.
ERTi-5Choose it when strength drives the design.
ERTi-15 vs ERTi-5: 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
Poisson's Ratio
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Reduction in Area
Compressive Strength
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 110 GPa16 Msi
Physical
Density and transition temperatures.
Density
Melting Point (Solidus)
Liquidus Temperature
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Specific Heat Capacity
Thermal Expansion (CTE, 20–100 °C)
Latent Heat of Fusion
Max Service Temperature (continuous)
Min Service Temperature
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Galvanic Potential (seawater, vs SCE)
Corrosion Resistance
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Brazeability / Solderability
Castability
Same in both: Polishability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Embodied Carbon (primary production)
Embodied Water
Typical Recycled Content
Same in both: Embodied Energy (primary production) 650 MJ/kg279,450 BTU/lb
Common Calculations
Ratios derived from the values above.
Specific Strength (UTS / density)
Specific Stiffness (E / density)
Modulus of Resilience
Thermal Diffusivity
Same in both: Thermal Shock Resistance Index 7
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-15 | ERTi-5 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Both take the same 1 finish: Plasma Spray.
ERTi-15 vs ERTi-5 — frequently asked
Is ERTi-5 stronger than ERTi-15?
Yes. ERTi-5 has a typical yield strength of 895 MPa (130 ksi) against 815 MPa (118 ksi) for ERTi-15 — about 10% more. Tensile strength is 965 MPa (140 ksi) vs 880 MPa (128 ksi).
Which is cheaper, ERTi-15 or ERTi-5?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which welds better, ERTi-15 or ERTi-5?
ERTi-15. Its weldability rates excellent (85/100) against very good (70/100) for ERTi-5.
Ready to make it?
Upload a CAD file and FabDigit prices the part in ERTi-15 and ERTi-5 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.