Titanium Ti-6Al-6V-2Sn vs Ti-6Al-7Nb
Titanium · grade comparison
Titanium Ti-6Al-6V-2Sn and Ti-6Al-7Nb are both titanium grades. Ti-6Al-6V-2Sn is the stronger of the two: yield strength 980 MPa (142 ksi) against 900 MPa (131 ksi) for Ti-6Al-7Nb, about 9% more. Ti-6Al-6V-2Sn is harder — 340 HB against 305 HB for Ti-6Al-7Nb — which matters for wear surfaces and threads. Ti-6Al-7Nb runs hotter in service (350°C vs 315°C continuous) and Ti-6Al-7Nb conducts electricity better (1.3 % IACS vs 1.1 % IACS). On the shop floor, Ti-6Al-7Nb welds better (good vs fair) and Ti-6Al-7Nb forms better (30 vs 20 out of 100).
Ti-6Al-6V-2SnChoose it when strength drives the design, or when surface hardness matters.
Ti-6Al-7NbChoose it when the part sees heat, or when it will be welded.
Ti-6Al-6V-2Sn vs Ti-6Al-7Nb: 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)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell C
Hardness, Vickers
Same in both: Fatigue Strength (Endurance Limit) 550 MPa79.8 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
Specific Heat Capacity
Thermal Expansion (CTE, 20–100 °C)
Latent Heat of Fusion
Max Service Temperature (continuous)
Same in both: 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
Weldability
Formability (cold)
Castability
Brazeability / Solderability
Polishability
Same in both: Machinability Rating (AISI 1212 = 100 %) 20%
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Water
Typical Recycled Content
Same in both: Embodied Carbon (primary production) 45 kg CO₂/kg
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 | Ti-6Al-6V-2Sn | Ti-6Al-7Nb |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Both take the same 1 finish: Plasma Spray.
Ti-6Al-6V-2Sn vs Ti-6Al-7Nb — frequently asked
Is Ti-6Al-6V-2Sn stronger than Ti-6Al-7Nb?
Yes. Ti-6Al-6V-2Sn has a typical yield strength of 980 MPa (142 ksi) against 900 MPa (131 ksi) for Ti-6Al-7Nb — about 9% more. Tensile strength is 1,050 MPa (152 ksi) vs 1,000 MPa (145 ksi).
Which is cheaper, Ti-6Al-6V-2Sn or Ti-6Al-7Nb?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which welds better, Ti-6Al-6V-2Sn or Ti-6Al-7Nb?
Ti-6Al-7Nb. Its weldability rates good (65/100) against fair (35/100) for Ti-6Al-6V-2Sn.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Ti-6Al-6V-2Sn and Ti-6Al-7Nb 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.