Titanium Pipe Overview
Titanium pipe is available in two major types:
- Seamless Pipe – Made from solid titanium billet, best for high-pressure or critical applications.
- Welded Pipe – Made from titanium sheet/coil; more cost-effective for general use.
Titanium Pipe Sizes
Standard Dimensions (per ASTM B861/B862)
| Size Type | Range |
| Outside Diameter (OD) | 6 mm – 600 mm (¼” – 24″) |
| Wall Thickness | 0.5 mm – 25 mm (Schedule 5S to 160) |
| Length | 3 m, 6 m standard; custom cuts available |
⚙️ Pipes are often sized by Nominal Pipe Size (NPS) in inches and Schedule (wall thickness).
Titanium Grades for Pipes
Commercially Pure Grades (Grades 1 to 4)
| Grade | Description | Key Features | Typical Uses |
| 1 | Softest CP titanium | Excellent corrosion resistance, weldable | Marine, desalination, chemical lines |
| 2 | Most used CP grade | Balanced strength & corrosion resistance | Heat exchangers, offshore, architecture |
| 3 | Higher strength CP | Stronger but less ductile | Aerospace, industrial piping |
| 4 | Strongest CP grade | High strength, good corrosion resistance | Chemical plants, hydraulic piping |
Titanium Alloys
| Grade | Alloy | Features | Applications |
| 5 | Ti-6Al-4V | High strength, moderate weldability | Aerospace piping, motorsport exhausts |
| 7 | Ti-0.2Pd (CP + Palladium) | Superior corrosion resistance in reducing acids | Chemical piping, pickling systems |
| 9 | Ti-3Al-2.5V | High weldability, medium strength | Hydraulic and aircraft tubing |
| 12 | Ti-0.3Mo-0.8Ni | Excellent corrosion in acidic and chloride media | Seawater systems, bleaching plants |
| 23 | Ti-6Al-4V ELI | Biocompatible, low oxygen/interstitials | Medical gas lines, surgical equipment |
Applicable Standards
| Standard | Description |
| ASTM B861 | Seamless titanium and titanium alloy pipe |
| ASTM B862 | Welded titanium pipe |
| ASTM B337 | Seamless pipe and tube for condensers and heat exchangers |
| ASTM B338 | Seamless tubes for heat exchangers and condensers |
| ASME SB–861 | ASME spec for pressure piping |
Common Applications of Titanium Pipe
| Industry | Uses |
| Chemical | Acidic fluid transfer, reactors, piping systems |
| Marine | Ballast systems, seawater piping, heat exchangers |
| Oil & Gas | Subsea piping, risers, offshore piping systems |
| Medical | Clean gas lines, implant-grade tubing (Grade 23) |
| Aerospace | Hydraulic and fuel piping, structural tubing |
| Desalination | Brine and evaporator piping, corrosion resistance |
Optional: Mechanical Properties (Sample)
| Grade | Yield Strength (MPa) | UTS (MPa) | Elongation (%) | Corrosion Resistance |
| 1 | ~170 | ~240 | 24–30% | Excellent |
| 2 | ~275 | ~345 | 20–30% | Excellent |
| 5 | ~880 | ~950 | 10–14% | Good |
| 7 | ~275 | ~345 | 20–30% | Outstanding (acids) |
| 12 | ~480 | ~560 | 18–25% | Outstanding (chlorides) |
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