Titanium Ti-15-3 vs Ti-15Mo-2.7Nb-3Al-0.2Si
Titanium · grade comparison
Titanium Ti-15-3 and Ti-15Mo-2.7Nb-3Al-0.2Si are both titanium grades. Both yield at about 790 MPa — strength does not separate them. Ti-15-3 is the more ductile: elongation 20% versus 18% for Ti-15Mo-2.7Nb-3Al-0.2Si. Ti-15-3 is lighter (4.76 g/cm³ vs 4.94 g/cm³ for Ti-15Mo-2.7Nb-3Al-0.2Si) and Ti-15Mo-2.7Nb-3Al-0.2Si runs hotter in service (480°C vs 260°C continuous). On the shop floor, Ti-15-3 welds better (very good vs good) and Ti-15Mo-2.7Nb-3Al-0.2Si sits in a lower cost tier (high, $$$$) than Ti-15-3 (specialty, $$$$$).
Ti-15-3Choose it when the part is bent, formed or impact-loaded, or when weight is the constraint.
Ti-15Mo-2.7Nb-3Al-0.2SiChoose it when the part sees heat, or when cost is the deciding factor.
Ti-15-3 vs Ti-15Mo-2.7Nb-3Al-0.2Si: 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-15-3Ti-15Mo-2.7Nb-3Al-0.2Si
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Elastic (Young's) Modulus
Shear Modulus
Bulk Modulus
Poisson's Ratio
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Reduction in Area
Compressive Strength
Shear Strength
Fracture Toughness (K_IC)
Hardness, Brinell
Hardness, Rockwell C
Hardness, Vickers
Same in both: Fatigue Strength (Endurance Limit) 450 MPa65.3 ksi
Physical
Density and transition temperatures.
Density
Same in both: Melting Point (Solidus) 1,600°C2,912 °F · Liquidus Temperature 1,650°C3,002 °F
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 500 J/kg·K0.12 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 Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Polishability
Castability
Same in both: Machinability 20 / 100 · Brazeability / Solderability 45 / 100
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Embodied Water
Typical Recycled Content
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 10
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 | Ti-15-3 | Ti-15Mo-2.7Nb-3Al-0.2Si |
|---|---|---|
| CNC machining | Yes | — |
| Sheet metal | Yes | — |
| Default condition | O | — |
| Relative cost | $$$$$ Specialty | $$$$ High |
| Min. machined wall | 1 mm | — |
| Best machined surface | Ra 1.6 µm | — |
| AlCrN | Yes | — |
| AlTiN | Yes | — |
| Anodizing Type II | Yes | — |
| CVD Al2O3 | Yes | — |
| CVD TiCN | Yes | — |
| CVD TiN | Yes | — |
| Cerakote | Yes | — |
| CrN | Yes | — |
| DLC | Yes | — |
| Electropolishing | Yes | — |
| HVOF Coating | Yes | — |
| MoS2 | Yes | — |
| Multilayer CVD | Yes | — |
| TiAlN | Yes | — |
| TiB2 | Yes | — |
| TiCN | Yes | — |
| TiN | Yes | — |
| WC/C | Yes | — |
They share 1 finish: Plasma Spray.
Ti-15-3 vs Ti-15Mo-2.7Nb-3Al-0.2Si — frequently asked
What is the difference between Ti-15-3 and Ti-15Mo-2.7Nb-3Al-0.2Si?
Titanium Ti-15-3 and Ti-15Mo-2.7Nb-3Al-0.2Si are both titanium grades. Both yield at about 790 MPa — strength does not separate them. Ti-15-3 is the more ductile: elongation 20% versus 18% for Ti-15Mo-2.7Nb-3Al-0.2Si.
Which is cheaper, Ti-15-3 or Ti-15Mo-2.7Nb-3Al-0.2Si?
Ti-15Mo-2.7Nb-3Al-0.2Si is the lower-cost material: it sits in the high tier ($$$$) while Ti-15-3 is specialty ($$$$$). Part price depends far more on geometry, tolerance and quantity than on raw stock — upload a CAD file for a live quote.
Which welds better, Ti-15-3 or Ti-15Mo-2.7Nb-3Al-0.2Si?
Ti-15-3. Its weldability rates very good (70/100) against good (60/100) for Ti-15Mo-2.7Nb-3Al-0.2Si.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Ti-15-3 and Ti-15Mo-2.7Nb-3Al-0.2Si 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.