Titanium Ti-15-3 vs Ti-5553
Titanium · grade comparison
Titanium Ti-15-3 and Ti-5553 are both titanium grades. Ti-5553 is the stronger of the two: yield strength 900 MPa (131 ksi) against 790 MPa (115 ksi) for Ti-15-3, about 14% more; tensile strength follows at 960 MPa (139 ksi) vs 820 MPa (119 ksi). In exchange, Ti-15-3 is the more ductile: elongation 20% versus 16% for Ti-5553, and Ti-5553 is harder (305 HB vs 265 HB). Ti-5553 is stiffer (105 GPa vs 82 GPa) and Ti-5553 runs hotter in service (300°C vs 260°C continuous). On the shop floor, Ti-15-3 welds better (very good vs fair).
Ti-15-3Choose it when the part is bent, formed or impact-loaded, or when it will be welded.
Ti-5553Choose it when strength drives the design, or when the part sees heat.
Ti-15-3 vs Ti-5553: 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
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Hardness, Brinell
Hardness, Rockwell C
Hardness, Vickers
Charpy V-Notch Impact (RT)
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
Thermal Expansion (CTE, 20–100 °C)
Latent Heat of Fusion
Max Service Temperature (continuous)
Same in both: Specific Heat Capacity 500 J/kg·K0.12 BTU/lb·°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).
Same in both: Galvanic Potential (seawater, vs SCE) -0.1 V · Corrosion Resistance 88 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Weldability
Formability (cold)
Brazeability / Solderability
Polishability
Castability
Same in both: Machinability Rating (AISI 1212 = 100 %) 16%
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 | Ti-15-3 | Ti-5553 |
|---|---|---|
| Default condition | O | O |
| Relative cost | $$$$$ Specialty | $$$$$ Specialty |
| Min. machined wall | 1 mm | 1 mm |
| Best machined surface | Ra 1.6 µm | Ra 1.6 µm |
Both are offered for CNC machining and Sheet metal. Both take the same 20 finishes: AlCrN, AlTiN, Anodizing Type II, CVD Al2O3, CVD TiCN, CVD TiN, Cerakote, CrN, DLC, Electropolishing, HVOF Coating, MoS2 and 8 more.
Ti-15-3 vs Ti-5553 — frequently asked
Is Ti-5553 stronger than Ti-15-3?
Yes. Ti-5553 has a typical yield strength of 900 MPa (131 ksi) against 790 MPa (115 ksi) for Ti-15-3 — about 14% more. Tensile strength is 960 MPa (139 ksi) vs 820 MPa (119 ksi).
Which is cheaper, Ti-15-3 or Ti-5553?
Both sit in the same relative cost tier ($$$$$, specialty); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which welds better, Ti-15-3 or Ti-5553?
Ti-15-3. Its weldability rates very good (70/100) against fair (35/100) for Ti-5553.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Ti-15-3 and Ti-5553 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.