Titanium Grade 23 vs Ti-6Al-7Nb
Titanium · grade comparison
Titanium Grade 23 and Ti-6Al-7Nb are both titanium grades. Ti-6Al-7Nb is the stronger of the two: yield strength 900 MPa (131 ksi) against 850 MPa (123 ksi) for Grade 23, about 6% more; tensile strength follows at 1,000 MPa (145 ksi) vs 930 MPa (135 ksi). In exchange, Grade 23 is the more ductile: elongation 15% versus 13% for Ti-6Al-7Nb, and Grade 23 is harder (340 HV vs 320 HV). Grade 23 is stiffer (113 GPa vs 105 GPa) and Ti-6Al-7Nb conducts electricity better (1.3 % IACS vs 1 % IACS). On the shop floor, Grade 23 welds better (very good vs good).
Grade 23Choose it when the part is bent, formed or impact-loaded, or when it will be welded.
Ti-6Al-7NbChoose it when strength drives the design.
Grade 23 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
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: 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
Min Service Temperature
Same in both: Max Service Temperature (continuous) 350°C662 °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)
Castability
Brazeability / Solderability
Same in both: Machinability 20 / 100 · Polishability 80 / 100
Sustainability
Primary-production footprint per kilogram.
Embodied Water
Same in both: Embodied Energy (primary production) 700 MJ/kg300,946 BTU/lb · Embodied Carbon (primary production) 45 kg CO₂/kg · Typical Recycled Content 15%
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 | Grade 23 | Ti-6Al-7Nb |
|---|---|---|
| CNC machining | Yes | — |
| Sheet metal | Yes | — |
| 3D printing | Yes | — |
| Default condition | O | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | 1 mm | — |
| Best machined surface | Ra 1.6 µm | — |
| AlCrN | Yes | — |
| AlTiN | Yes | — |
| Anodizing Type II | Yes | — |
| CVD Al2O3 | Yes | — |
| CVD TiCN | Yes | — |
| CVD TiN | Yes | — |
| Cerakote | Yes | — |
| CrN | Yes | — |
| DLC | Yes | — |
| Electropolishing | Yes | — |
| HVOF Coating | Yes | — |
| MoS2 | Yes | — |
| Multilayer CVD | Yes | — |
| TiAlN | Yes | — |
| TiB2 | Yes | — |
| TiCN | Yes | — |
| TiN | Yes | — |
| WC/C | Yes | — |
They share 1 finish: Plasma Spray.
Grade 23 vs Ti-6Al-7Nb — frequently asked
Is Ti-6Al-7Nb stronger than Grade 23?
Yes. Ti-6Al-7Nb has a typical yield strength of 900 MPa (131 ksi) against 850 MPa (123 ksi) for Grade 23 — about 6% more. Tensile strength is 1,000 MPa (145 ksi) vs 930 MPa (135 ksi).
Which is cheaper, Grade 23 or Ti-6Al-7Nb?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which welds better, Grade 23 or Ti-6Al-7Nb?
Grade 23. Its weldability rates very good (80/100) against good (65/100) for Ti-6Al-7Nb.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Grade 23 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.