Titanium Honeycomb Core 8.1PCF
Grade
8.1PCF = 8.1 pcf (0.130 g/cm³) high-density Ti-3Al-2.5V core
Pick where local crush, insert pull-out or high transverse shear loads govern.
Values for the 8.1PCF condition
Other Titanium Honeycomb Core grades and fills
Titanium Honeycomb Core is listed in 7 conditions; see the grade overview at Titanium Honeycomb Core.
Compare all 7 grades and fillsHide
| Grade · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness |
|---|---|---|---|---|---|
3.1 pcf (0.050 g/cm³) low-density Ti-3Al-2.5V core | Lightest practical Ti core — weight-critical hot structure where core stresses are low. | — | 3 | — | — |
CP titanium (Grade 2) foil core | Cheaper, more formable core for corrosion/acoustic duty where strength and hot creep are secondary. | — | 5 | — | — |
4.5 pcf (0.072 g/cm³) Ti-3Al-2.5V core | Intermediate density — good stiffness-to-weight for moderately loaded hot sandwich panels. | — | 6 | — | — |
6.0PCFDefault 6.0 pcf (0.096 g/cm³) Ti-3Al-2.5V core | Default workhorse density for titanium sandwich panels — balanced shear strength, crush strength and weight. | — | 10 | — | — |
Ti-6Al-4V foil core | Use when core strength or service temperature above ~450 °C drives the design; hardest to form and most expensive. | — | 13 | — | — |
8.1PCFThis page 8.1 pcf (0.130 g/cm³) high-density Ti-3Al-2.5V core | Pick where local crush, insert pull-out or high transverse shear loads govern. | — | 15 | — | — |
12 pcf (0.192 g/cm³) very-high-density Ti-3Al-2.5V core | Highest-load ramp/edge-close-out and hard-point regions, leading-edge TPS core. | — | 28 | — | — |
What is Titanium Honeycomb Core 8.1PCF?
Titanium Honeycomb Core 8.1PCF is Titanium Honeycomb Core in the 8.1PCF grade — pick where local crush, insert pull-out or high transverse shear loads govern. Titanium Honeycomb Core 8.1PCF has a tensile strength of 15 MPa (2.18 ksi), weaker than 83% of composite grades. The elastic modulus is 1.5 GPa (0.21 Msi). Titanium Honeycomb Core 8.1PCF has a density of 0.13 g/cm³ (0.0047 lb/in³), lighter than 84% of composite grades. 6.0PCF is the default condition FabDigit quotes; 8.1PCF is available on request or by drawing note.
Advantages
- Good UV / weathering resistance — 100/100, better than 93% of composite grades
- Lightweight — 0.13 g/cm³ (0.0047 lb/in³), better than 84% of composite grades
- High service temperature — 425°C (797 °F), better than 84% of composite grades
Limitations
- Hard to polish — 20/100, worse than 90% of composite grades
- High embodied carbon — 45 kg CO₂/kg, worse than 90% of composite grades
- Low stiffness — 1.5 GPa (0.21 Msi), worse than 84% of composite grades
Titanium Honeycomb Core 8.1PCF properties
Typical room-temperature values for Titanium Honeycomb Core 8.1PCF; 11 are specific to this condition. Other listed values are Titanium Honeycomb Core reference data and may not represent this condition. Bars are the position among composite grades.
Physical1
Titanium Honeycomb Core 8.1PCF has a density of 0.13 g/cm³ (0.0047 lb/in³), lighter than 84% of composite grades.
Mechanical6
Titanium Honeycomb Core 8.1PCF has a tensile strength of 15 MPa (2.18 ksi), weaker than 83% of composite grades. The elastic modulus is 1.5 GPa (0.21 Msi).
Thermal6
Titanium Honeycomb Core 8.1PCF is rated for continuous service to 425°C (797 °F). It conducts heat at 0.33 W/m·K (0.191 BTU/hr·ft·°F), worse than 53% of composite grades. Thermal expansion is 8.8 µm/m·K (4.89 µin/in·°F).
Electrical1
Titanium Honeycomb Core 8.1PCF has an electrical resistivity of 1.26×10⁻⁶ Ω·m.
Chemical & Environmental3
Corrosion resistance is excellent (85/100), better than 65% of composite grades. UV resistance is excellent.
Sustainability4
Producing a kilogram of Titanium Honeycomb Core 8.1PCF takes about 750 MJ of energy and emits 45 kg of CO₂ — more than 93% of composite grades. Typical recycled content is 5%.
Manufacturability2
Titanium Honeycomb Core 8.1PCF's machinability is poor (28/100, worse than 57% of composite grades).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with Titanium Honeycomb Core 8.1PCF
Is Titanium Honeycomb Core easy to machine?
Cut and net-shape the core with ultrasonic knife, abrasive waterjet (with core support/freeze fixturing) or high-speed carbide disc cutters; conventional milling of expanded core needs potting or ice-fill to avoid cell crushing.
Can Titanium Honeycomb Core be welded?
Node joining is by resistance seam welding of the foil stack, Ti-Cu-Ni braze or diffusion bonding; facesheets are attached by brazing, LID/diffusion bonding or high-temperature polyimide adhesive — all in vacuum or inert gas to avoid oxygen/hydrogen pickup.
Can Titanium Honeycomb Core be formed, bent or molded?
Foil is corrugated or stack-expanded to hexagonal cells; contoured panels use crush-forming, heat-assisted forming or flex-core geometry, since Ti has far less room-temperature stretch than 5052 aluminium.
What surface finishes work on Titanium Honeycomb Core?
Chemical clean/pickle (HNO₃-HF) and passivation before bonding; no plating needed for corrosion, and anodize or primer is applied only for adhesive-bond surface preparation.
Titanium Honeycomb Core chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| Alalpha stabilizer | 2.5 – 3.5 | 3 |
| Vbeta stabilizer | 2 – 3 | 2.5 |
| Fe | ≤ 0.3 | 0.12 |
| O0.12 % max for extra-low-interstitial foil | ≤ 0.15 | 0.1 |
| C | ≤ 0.08 | 0.02 |
| N | ≤ 0.03 | 0.01 |
| Hlower limits typical for thin foil | ≤ 0.02 | 0.01 |
| Ti | balance | — |
Titanium Honeycomb Core 8.1PCF — frequently asked
What is Titanium Honeycomb Core 8.1PCF used for?
Titanium Honeycomb Core 8.1PCF is typically used for hypersonic vehicle panels, engine nacelle structures and high-temperature aerospace sandwich panels. In short: lightest high-temperature metal core; vacuum-brazed or diffusion-bonded nodes; high cost and lead time.
What is the tensile strength of Titanium Honeycomb Core 8.1PCF?
Titanium Honeycomb Core 8.1PCF has a typical tensile strength of 15 MPa (2.18 ksi) — weaker than 83% of composite grades. Strength varies by condition: see the 7 listed tempers.
Is Titanium Honeycomb Core 8.1PCF easy to machine?
Not especially — machinability is rated poor (28/100, worse than 57% of composite grades). Cut and net-shape the core with ultrasonic knife, abrasive waterjet (with core support/freeze fixturing) or high-speed carbide disc cutters; conventional milling of expanded core needs potting or ice-fill to avoid cell crushing.
Can Titanium Honeycomb Core 8.1PCF be welded?
Node joining is by resistance seam welding of the foil stack, Ti-Cu-Ni braze or diffusion bonding; facesheets are attached by brazing, LID/diffusion bonding or high-temperature polyimide adhesive — all in vacuum or inert gas to avoid oxygen/hydrogen pickup.
What surface finishes work on Titanium Honeycomb Core 8.1PCF?
Chemical clean/pickle (HNO₃-HF) and passivation before bonding; no plating needed for corrosion, and anodize or primer is applied only for adhesive-bond surface preparation.
Can Titanium Honeycomb Core 8.1PCF be formed, bent or molded?
Foil is corrugated or stack-expanded to hexagonal cells; contoured panels use crush-forming, heat-assisted forming or flex-core geometry, since Ti has far less room-temperature stretch than 5052 aluminium.
What is the maximum service temperature of Titanium Honeycomb Core 8.1PCF?
Titanium Honeycomb Core 8.1PCF is rated for continuous use to about 425°C (797 °F), and briefly to 600°C. Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
Sources
- AMS 4943 / ASTM B265 — Ti-3Al-2.5V and CP titanium sheet, strip and foil — SAE / ASTM (2020)
- ASTM C365 (flatwise compressive) and ASTM C273 (shear) for sandwich core — ASTM (2016)
- MIL-HDBK-23A, Structural Sandwich Composites — US DoD (1968)
- ASM Handbook Vol. 2 — Properties of Titanium Alloys — ASM International (1990)
- Gibson & Ashby, Cellular Solids: Structure and Properties (honeycomb scaling laws) — Cambridge University Press (1997)
- Metallic honeycomb core attributes and property tables (Hexcel HexWeb / Plascore) — Hexcel, Plascore (2022)
Property data is compiled from published supplier and standards handbooks and normalised for comparison. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.