ASTM B861 Grade 2 Titanium Alloy Seamless Pipes are hollow, seamless tubes made from commercially pure titanium (Grade 2, UNS R50400), specified by ASTM International. These pipes are designed for general corrosion resistance and service at elevated temperatures, making them ideal for applications like chemical processing heat exchangers, oil and gas, and offshore environments. Key properties include excellent corrosion resistance, high ductility, and good performance in high temperatures.
ASTM B861 ASME SB861 Gr.2 Titanium Tubes
Standard: ASTM B861 ASME SB861
Type: Seamless and Welded.
Description Name: ASME SB861 Titanium Gr.2 Tubes, ASME SB861 Gr.2 Titanium tubes, ASTM B861 Titanium Gr.2 seamless tubes, Titanium Alloy Grade 12 seamless pipes, Titanium Alloy Gr.12 tubes, Gr.2 Titanium alloy tubing.
Diameter range: 6-219mm.
Thickness range: 0.3-12mm.
Shape: Round.
Length: Single random length/ Double random length or as customer's actual request. Max length 12000mm.
Chemical Composition of ASTM B861 Grade 2
| Titanium Gr 2 | C | Ti | N | Fe | H | O | V | Al |
| 0.1 max | 99.2 min | 0.03 max | 0.3 max | 0.015 max | 0.25 max | – | – |
Mechanical Properties of ASTM B861 Grade 2
| TITANIUM ALLOY | UNS | PROOF STRENGTH RP0.2 MPA MIN |
TENSILE STRESS RM MPA MIN |
ELONGATION A % MIN |
|---|---|---|---|---|
| Cp Ti Grade 1 | R50250 | 138-310 | 240 | 24 |
| Cp Ti Grade 2 | R50400 | 275-450 | 345 | 20 |
Tensile Strength of ASTM B861 Grade 2
| Grade | Tensile Strength, min | Yield Strength (0.2% Offset) | Elongation 2 in. or 50 mm | |||||
| min | max | |||||||
| Ksi | (Mpa) | Ksi | (Mpa) | Ksi | (Mpa) | gage length min % | ||
| Grade 1 | 35 | (240) | 25 | (170) | 45 | (310) | 24 | |
| Grade 2 | 50 | (345) | 40 | (275) | 65 | (450) | 20 | |
Equivalent Grades of Astm ASTM B861 Grade 2
| SUPPLIER OF TITANIUM GRADES | UNS | ASTM/ASME | WERKSTOFF NR. | AFNOR |
|---|---|---|---|---|
| Ti Grade 1 (CP Ti) | R50250 | Grade 1 | W.Nr. 3.7025 | T-35 |
| Ti Grade 2 (CP Ti) | R50400 | Grade 2 | W.Nr. 3.7035 | T-40 |
Tolerances of ASTM B861 Grade 2
| SIZE OD, MM (IN.) | TOLERANCES OD, MM (IN.) | WT MIN WALL % |
|---|---|---|
| < 25.4 (< 3/8) | ±0.102 (0.004) | +20/-0 |
| 25.4-38.1 (1-1 1/2) | ±0.127 (0.005) | +20/-0 |
Application:
Chlorination systems
Heat Exchangers
Food Chemical
Flue gas desulfurization systems
Pulp and paper production
Markings
Each length of tube 1/2 in. (13mm) in outside diameter and larger, manufactured in accordance with this specification, shall be legibly marked, either by stenciling, stamping, or rolling, with the manufacture's private identifying mark, the ASTM designation, the tube class, the grade, and heat number. On smaller than 1/2 in. outside diameter tubing that is bundled, the same information may be legibly stamped on a metal tag securely attached to each bundle.
Packing and Marking
Packed in bundles or ply wooden box wrapped in plastic, and suitably protected for sea-worthily delivery or as requested.
