ASTM · ASTM B862
Welded Titanium Pipes: ASTM B862 Standard
Technical requirements of the ASTM B862 standard
The ASTM B862 specification governs the production of welded pipes made from a wide range of titanium alloys and unalloyed titanium. This standard covers over 30 material grades optimized for operation in aggressive corrosive environments and high-temperature conditions. Products supplied by EV Group China fully comply with these engineering standards.
| Grade | UNS Number | Material Type |
|---|---|---|
| Grade 1 | UNS R50250 | Unalloyed titanium |
| Grade 2 | UNS R50400 | Unalloyed titanium |
| Grade 2H | UNS R50400 | Unalloyed titanium (enhanced strength 400 MPa) |
| Grade 3 | UNS R50550 | Unalloyed titanium |
| Grade 4 | UNS R50700 | Unalloyed titanium |
| Grade 5 | UNS R56400 | Titanium 6Al-4V |
| Grade 6 | UNS R54520 | Titanium 5Al-2.5Sn |
| Grade 7 | UNS R52400 | Titanium + palladium (0.12–0.25%) |
| Grade 7H | UNS R52400 | Titanium + palladium (enhanced strength) |
| Grade 9 | UNS R56320 | Titanium 3Al-2.5V |
| Grade 11 | UNS R52250 | Titanium + palladium |
| Grade 12 | UNS R53400 | Titanium 0.3Mo-0.8Ni |
| Grade 13 | UNS R53413 | Titanium 0.5Ni-0.05Ru |
| Grade 14 | UNS R53414 | Titanium 0.5Ni-0.05Ru |
| Grade 15 | UNS R53415 | Titanium 0.5Ni-0.05Ru |
| Grade 16 | UNS R52402 | Titanium + palladium (0.04–0.08%) |
| Grade 16H | UNS R52402 | Titanium + palladium (enhanced strength) |
| Grade 17 | UNS R52252 | Titanium + palladium |
| Grade 18 | UNS R56322 | Titanium 3Al-2.5V + palladium |
| Grade 19 | UNS R58640 | High-strength titanium alloy |
| Grade 20 | UNS R58645 | High-strength titanium + palladium |
| Grade 21 | UNS R58210 | Titanium 15Mo-3Al-2.7Nb-0.25Si |
| Grade 23 | UNS R56407 | Titanium 6Al-4V ELI (extra low interstitial) |
| Grade 24 | UNS R56405 | Titanium 6Al-4V + palladium |
| Grade 25 | UNS R56403 | Titanium 6Al-4V + nickel + palladium |
| Grade 26 | UNS R52404 | Titanium + ruthenium (0.08–0.14%) |
| Grade 26H | UNS R52404 | Titanium + ruthenium (enhanced strength) |
| Grade 27 | UNS R52254 | Titanium + ruthenium |
| Grade 28 | UNS R56323 | Titanium 3Al-2.5V + ruthenium |
| Grade 29 | UNS R56404 | Titanium 6Al-4V ELI + ruthenium |
| Grade 30 | UNS R53530 | Titanium 0.3Co-0.05Pd |
| Grade 31 | UNS R53532 | Titanium 0.3Co-0.05Pd |
| Grade 32 | UNS R55111 | Titanium alloy 5Al-1Sn-1Zr-1V-0.8Mo |
| Grade 33 | UNS R53442 | Titanium 0.4Ni-0.015Pd-0.025Ru-0.15Cr |
| Grade 34 | UNS R53445 | Titanium 0.4Ni-0.015Pd-0.025Ru-0.15Cr |
| Grade 35 | UNS R56340 | Titanium 4.5Al-2Mo-1.6V-0.5Fe-0.3Si |
| Grade 36 | UNS R58450 | Titanium 45Nb |
| Grade 37 | UNS R52815 | Titanium 1.5Al |
| Grade 38 | UNS R54250 | Titanium 4Al-2.5V-1.5Fe |
| Grade 39 | UNS R53390 | Titanium 0.25Fe-0.4Si |
For pipes with a diameter of 8 inches (NPS 8) and above, custom engineering is applied. EV Group China provides the ability to adapt wall thickness and heat treatment methods to meet specific customer requirements. Additional testing and inspection methods can be integrated into the production cycle upon request.
Important note: H-grade alloys (2H, 7H, 16H, 26H) are optimized for high-pressure vessels and guarantee a minimum Ultimate Tensile Strength (UTS). The specification complies with ASME SB862 requirements for boiler equipment.