Titanium C-9 vs Grade Ti-Pd7B
Titanium · grade comparison
Titanium C-9 and Grade Ti-Pd7B are both titanium grades. C-9 is the stronger of the two: yield strength 550 MPa (79.8 ksi) against 380 MPa (55.1 ksi) for Grade Ti-Pd7B, about 45% more; tensile strength follows at 690 MPa (100 ksi) vs 450 MPa (65.3 ksi). In exchange, Grade Ti-Pd7B is the more ductile: elongation 18% versus 12% for C-9, and C-9 is harder (240 HB vs 150 HB). Grade Ti-Pd7B runs hotter in service (400°C vs 300°C continuous) and Grade Ti-Pd7B conducts heat better (16.4 W/m·K vs 7.6 W/m·K).
C-9Choose it when strength drives the design.
Grade Ti-Pd7BChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
C-9 vs Grade Ti-Pd7B: 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)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell C
Hardness, Vickers
Hardness, Rockwell B
Same in both: Bulk Modulus 110 GPa16 Msi · Fracture Toughness (K_IC) 70 MPa·√m63.7 ksi·√in
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)
Max Service Temperature (continuous)
Same in both: 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).
Galvanic Potential (seawater, vs SCE)
Corrosion Resistance
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Weldability
Formability (cold)
Castability
Brazeability / Solderability
Same in both: Machinability Rating (AISI 1212 = 100 %) 22% · Polishability 70 / 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
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 | C-9 | Grade Ti-Pd7B |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Both take the same 1 finish: Plasma Spray.
C-9 vs Grade Ti-Pd7B — frequently asked
Is C-9 stronger than Grade Ti-Pd7B?
Yes. C-9 has a typical yield strength of 550 MPa (79.8 ksi) against 380 MPa (55.1 ksi) for Grade Ti-Pd7B — about 45% more. Tensile strength is 690 MPa (100 ksi) vs 450 MPa (65.3 ksi).
Which is cheaper, C-9 or Grade Ti-Pd7B?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which is easier to machine, C-9 or Grade Ti-Pd7B?
Grade Ti-Pd7B, by a small margin. Both rate poor for machinability — 32/100 against 25/100 for C-9; for welding the order is Grade Ti-Pd7B first (excellent, 85/100) then C-9 (very good, 80/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in C-9 and Grade Ti-Pd7B 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.