Titanium C-4 vs Grade C-3
Titanium · grade comparison
Titanium C-4 and Grade C-3 are both titanium grades. Both yield at about 530 MPa — strength does not separate them. Grade C-3 is the more ductile: elongation 14% versus 12% for C-4, and C-4 is harder (265 HB vs 250 HB). Grade C-3 runs hotter in service (400°C vs 300°C continuous).
Grade C-3Choose it when the part is bent, formed or impact-loaded, or when the part sees heat.
C-4 vs Grade C-3: 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.
Shear Modulus
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
Same in both: Elastic (Young's) Modulus 104 GPa15.1 Msi · Bulk Modulus 110 GPa16 Msi · Poisson's Ratio 0.34 · Tensile Strength (Ultimate) 620 MPa89.9 ksi · Fracture Toughness (K_IC) 60 MPa·√m54.6 ksi·√in
Physical
Density and transition temperatures.
Melting Point (Solidus)
Liquidus Temperature
Same in both: Density 4.51 g/cm³0.16 lb/in³
Thermal
How each material carries heat and how hot it can run.
Specific Heat Capacity
Latent Heat of Fusion
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 17.2 W/m·K9.9 BTU/hr·ft·°F · Thermal Expansion (CTE, 20–100 °C) 8.6 µm/m·K4.8 µin/in·°F · 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)
Polishability
Same in both: Castability 60 / 100 · Brazeability / Solderability 40 / 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.
Modulus of Resilience
Thermal Diffusivity
Same in both: Specific Strength (UTS / density) 137 kN·m/kg · Specific Stiffness (E / density) 23.1 MN·m/kg · Thermal Shock Resistance Index 12
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-4 | Grade C-3 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Both take the same 1 finish: Plasma Spray.
C-4 vs Grade C-3 — frequently asked
What is the difference between C-4 and Grade C-3?
Titanium C-4 and Grade C-3 are both titanium grades. Both yield at about 530 MPa — strength does not separate them. Grade C-3 is the more ductile: elongation 14% versus 12% for C-4, and C-4 is harder (265 HB vs 250 HB).
Which is cheaper, C-4 or Grade C-3?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
When should I choose C-4 over Grade C-3?
Pick Grade C-3 when the part is bent, formed or impact-loaded, or when the part sees heat.
Ready to make it?
Upload a CAD file and FabDigit prices the part in C-4 and Grade C-3 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.