ASTM B861 Seamless Titanium and Titanium Alloy Pipe
- Type: Seamless Pipe
- Size: NPS 3/8″ – 30″ WT: SCH5S, 10S, 40S, 80S
- Grade 2, CP Ti-2, W.Nr 3.7025, AFNOR T35, BS 2TA1, GOST VT1-0 (ВТ1-0)
- Grade 5, Ti-6Al-4V, W.Nr 3.7165, AFNOR T-A6V, BS TA10-13, GOST BT6 (VT6)
- Grade 7, Ti-0.2Pd, W.Nr 3.7235, BS TA9
- Grade 9, Ti-3Al-2.5V, GOST 3B
- Grade 12, Ti-0.3Mo-0.8Ni, W.Nr 3.7105
Features
ASTM B861 Titanium and Titanium Alloy Seamless Pipe
Chemical Composition (wt.%)
| Grade | N (max) | C (max) | H (max) | Fe (max) | O (max) | Al | V | Pd | Mo | Ni | Ti |
| 2 | 0.03 | 0.08 | 0.015 | 0.3 | 0.25 | – | – | – | – | – | Balance |
| 5 | 0.05 | 0.08 | 0.015 | 0.4 | 0.2 | 5.5-6.75 | 3.5-4.5 | – | – | – | Balance |
| 7 | 0.03 | 0.08 | 0.015 | 0.3 | 0.25 | – | – | 0.12-0.25 | – | – | Balance |
| 9 | 0.03 | 0.08 | 0.015 | 0.25 | 0.15 | 2.5-3.5 | 2.0-3.0 | – | – | – | Balance |
| 12 | 0.03 | 0.08 | 0.015 | 0.3 | 0.25 | – | – | – | 0.2-0.4 | 0.6-0.9 | Balance |
Mechanical Properties
| Grade | Tensile Strength min (ksi [MPa]) |
Yield Strength (0.2% Offset) min (ksi [MPa]) |
Elongation in 2in. or 50mm (min, %) |
| 2 | 50 [345] | 40 [275] | 20 |
| 5 | 130 [895] | 120 [828] | 10 |
| 7 | 50 [345] | 40 [275] | 20 |
| 9 | 90 [620] | 70 [483] | 15 |
| 12 | 70 [483] | 50 [345] | 18 |
Technical Specifications
| Specification | Value |
| Standard | ASTM B861 Titanium and Titanium Alloy Pipe |
| Grade | Grade 2, Grade 5, Grade 7, Grade 9, Grade 12 |
| Seam Type | Seamless |
| O.D. | 10.3- 914.4mm (NPS 1/8″ – 36″) |
| W.T. | 1.65- 30.96mm (0.065″-1.219″) SCH 5S, SCH5, SCH10S, SCH10, SCH40S, SCH40, SCH80S, SCH80 |
| Length | 3000 – 12000mm |
| Density | 4.51 g/cm3 |
| Shapes of Pipe | Straight Seamless Pipe |
| Inspection Certificate | EN 10204 Type 3.1 (Mill Test Certificate), EN 10204 Type 3.2 (Witness Testing or 3rd Party Inspection) |
| Tensile Test | Chemical Analysis, Tensile Test, Flattening Test, Flaring Test, Hydrostatic Test, Nondestructive Testing (NDT), Dimensional Inspection |
Packing
Plain or beveled ends as per ANSI B16.25 to an angle of 30°+5°/-0°, end with plastic caps or metal protectors, covered or bare, bundled or loosely packed.
Application
Small Diameter Pipes (NPS 1/8″ to 2″):
Chemical processing: Transporting corrosive fluids and gases in chemical plants and refineries. Grade 2 and Grade 7 are commonly used due to their excellent corrosion resistance.
Medical devices: Manufacturing surgical instruments, implants, and other medical devices requiring biocompatibility and corrosion resistance. Grade 5 and Grade 23 are popular choices for these applications.
Aerospace: Fuel lines, hydraulic systems, and other critical components in aircraft and spacecraft. Grade 5 is widely used due to its high strength-to-weight ratio and excellent fatigue resistance.
Medium Diameter Pipes (NPS 2 ½” to 8″):
Oil & gas exploration and production: Downhole tubing, pipelines, and process piping systems in offshore and onshore oil and gas facilities. Grade 5 and Grade 9 offer high strength and corrosion resistance for demanding environments.
Power generation: Condensers, heat exchangers, and other components in power plants. Grade 2 and Grade 7 provide excellent resistance to erosion and corrosion in high-temperature and high-pressure applications.
Desalination plants: Piping systems for seawater intake, brine discharge, and product water distribution. Grade 2 and Grade 12 offer excellent resistance to seawater corrosion.
Large Diameter Pipes (NPS 10″ and above):
Chemical processing: Large-scale chemical processing plants require high flow rates and corrosion resistance.
Water treatment: Piping systems for water distribution and wastewater treatment facilities. Grade 1 and Grade 2 are commonly used due to their cost-effectiveness and corrosion resistance.
Marine applications: Seawater piping systems for ships and offshore structures. Grade 2 and Grade 12 are suitable for their high corrosion resistance in marine environments.
