Titanium Ti-15-3 vs Ti-3Al-8V-6Cr-4Mo-4Zr
Titanium · grade comparison
Titanium Ti-15-3 and Ti-3Al-8V-6Cr-4Mo-4Zr are both titanium grades. Ti-3Al-8V-6Cr-4Mo-4Zr is the stronger of the two: yield strength 850 MPa (123 ksi) against 790 MPa (115 ksi) for Ti-15-3, about 8% more; tensile strength follows at 900 MPa (131 ksi) vs 820 MPa (119 ksi). In exchange, Ti-15-3 is the more ductile: elongation 20% versus 18% for Ti-3Al-8V-6Cr-4Mo-4Zr, and Ti-3Al-8V-6Cr-4Mo-4Zr is harder (32 HRC vs 27 HRC). Ti-15-3 runs hotter in service (260°C vs 200°C continuous). On the shop floor, Ti-15-3 welds better (very good vs good) and Ti-3Al-8V-6Cr-4Mo-4Zr 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 the part sees heat.
Ti-3Al-8V-6Cr-4Mo-4ZrChoose it when strength drives the design, or when cost is the deciding factor.
Ti-15-3 vs Ti-3Al-8V-6Cr-4Mo-4Zr: 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
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
Charpy V-Notch Impact (RT)
Same in both: Fatigue Strength (Endurance Limit) 450 MPa65.3 ksi
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
Thermal Expansion (CTE, 20–100 °C)
Max Service Temperature (continuous)
Same in both: Specific Heat Capacity 500 J/kg·K0.12 BTU/lb·°F · Latent Heat of Fusion 365 J/g157 BTU/lb · Min Service Temperature -196°C-321 °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
Formability (cold)
Brazeability / Solderability
Polishability
Castability
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
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 | Ti-15-3 | Ti-3Al-8V-6Cr-4Mo-4Zr |
|---|---|---|
| CNC machining | Yes | — |
| Sheet metal | Yes | — |
| Default condition | O | — |
| Relative cost | $$$$$ Specialty | $$$$ High |
| Min. machined wall | 1 mm | — |
| Best machined surface | Ra 1.6 µm | — |
| AlCrN | Yes | — |
| AlTiN | Yes | — |
| Anodizing Type II | Yes | — |
| CVD Al2O3 | Yes | — |
| CVD TiCN | Yes | — |
| CVD TiN | Yes | — |
| Cerakote | Yes | — |
| CrN | Yes | — |
| DLC | Yes | — |
| Electropolishing | Yes | — |
| HVOF Coating | Yes | — |
| MoS2 | Yes | — |
| Multilayer CVD | Yes | — |
| TiAlN | Yes | — |
| TiB2 | Yes | — |
| TiCN | Yes | — |
| TiN | Yes | — |
| WC/C | Yes | — |
They share 1 finish: Plasma Spray.
Ti-15-3 vs Ti-3Al-8V-6Cr-4Mo-4Zr — frequently asked
Is Ti-3Al-8V-6Cr-4Mo-4Zr stronger than Ti-15-3?
Yes. Ti-3Al-8V-6Cr-4Mo-4Zr has a typical yield strength of 850 MPa (123 ksi) against 790 MPa (115 ksi) for Ti-15-3 — about 8% more. Tensile strength is 900 MPa (131 ksi) vs 820 MPa (119 ksi).
Which is cheaper, Ti-15-3 or Ti-3Al-8V-6Cr-4Mo-4Zr?
Ti-3Al-8V-6Cr-4Mo-4Zr is the lower-cost material: it sits in the high tier ($$$$) while Ti-15-3 is specialty ($$$$$). 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-3Al-8V-6Cr-4Mo-4Zr?
Ti-15-3. Its weldability rates very good (70/100) against good (60/100) for Ti-3Al-8V-6Cr-4Mo-4Zr.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Ti-15-3 and Ti-3Al-8V-6Cr-4Mo-4Zr 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.