1.1Β This specification covers the requirements for 34 grades of titanium and titanium alloy seamless pipe intended for general corrosion resisting and elevated temperature service as follows:
1.1.1Β Grade 1βUNS R50250. Unalloyed titanium,
1.1.2Β Grade 2βUNS R50400. Unalloyed titanium,
1.1.2.1Β Grade 2HβUNS R50400. Unalloyed titanium (Grade 2 with 58 ksi (400 MPa) minimum UTS),
1.1.3Β Grade 3βUNS R50550. Unalloyed titanium,
1.1.4Β Grade 5βUNS R56400. Titanium alloy (6β% aluminum, 4β% vanadium),
1.1.5Β Grade 7βUNS R52400. Unalloyed titanium plus 0.12β% to 0.25β% palladium,
1.1.5.1Β Grade 7HβUNS R52400. Unalloyed titanium plus 0.12β% to 0.25β% palladium (Grade 7 with 58 ksi (400 MPa) minimum UTS),
1.1.6Β Grade 9βUNS R56320. Titanium alloy (3β% aluminum, 2.5β% vanadium),
1.1.7Β Grade 11βUNS R52250. Unalloyed titanium plus 0.12β% to 0.25β% palladium,
1.1.8Β Grade 12βUNS R53400. Titanium alloy (0.3β% molybdenum, 0.8β% nickel),
1.1.9Β Grade 13βUNS R53413. Titanium alloy (0.5β% nickel, 0.05β% ruthenium),
1.1.10Β Grade 14βUNS R53414. Titanium alloy (0.5β% nickel, 0.05β% ruthenium),
1.1.11Β Grade 15βUNS R53415. Titanium alloy (0.5β% nickel, 0.05β% ruthenium),
1.1.12Β Grade 16βUNS R52402. Unalloyed titanium plus 0.04β% to 0.08β% palladium,
1.1.12.1Β Grade 16HβUNS R52402. Unalloyed titanium plus 0.04β% to 0.08β% palladium (Grade 16 with 58 ksi (400βMPa) minimum UTS),
1.1.13Β Grade 17βUNS R52252. Unalloyed titanium plus 0.04β% to 0.08β% palladium,
1.1.14Β Grade 18βUNS R56322. Titanium alloy (3β% aluminum, 2.5β% vanadium plus 0.04β% to 0.08β% palladium),
1.1.15Β Grade 19βUNS R58640. Titanium alloy (3β% aluminum, 8β% vanadium, 6β% chromium, 4β% zirconium, 4β% molybdenum),
1.1.16Β Grade 20βUNS R58645. Titanium alloy (3β% aluminum, 8β% vanadium, 6β% chromium, 4β% zirconium, 4β% molybdenum) plus 0.04β% to 0.08β% palladium,
1.1.17Β Grade 21βUNS R58210. Titanium alloy (15β% molybdenum, 3β% aluminum, 2.7β% niobium, 0.25β% silicon),
1.1.18Β Grade 23βUNS R56407. Titanium alloy (6β% aluminum, 4β% vanadium, extra low interstitial, ELI),
1.1.19Β Grade 24βUNS R56405. Titanium alloy (6β% aluminum, 4β% vanadium) plus 0.04β% to 0.08β% palladium,
1.1.20Β Grade 25βUNS R56403. Titanium alloy (6β% aluminum, 4β% vanadium) plus 0.3β% to 0.8β% nickel and 0.04β% to 0.08β% palladium,
1.1.21Β Grade 26βUNS R52404. Unalloyed titanium plus 0.08β% to 0.14β% ruthenium,
1.1.21.1Β Grade 26HβUNS R52404. Unalloyed titanium plus 0.08β% to 0.14β% ruthenium (Grade 26 with 58 ksi (400βMPa) minimum UTS),
1.1.22Β Grade 27βUNS R52254. Unalloyed titanium plus 0.08β% to 0.14β% ruthenium,
1.1.23Β Grade 28βUNS R56323. Titanium alloy (3β% aluminum, 2.5β% vanadium plus 0.08β% to 0.14β% ruthenium),
1.1.24Β Grade 29βUNS R56404. Titanium alloy (6β% aluminum, 4β% vanadium, extra low interstitial, ELI plus 0.08β% to 0.14β% ruthenium),
1.1.25Β Grade 33βUNS R53442. Titanium alloy (0.4β% nickel, 0.015β% palladium, 0.025β% ruthenium, 0.15β% chromium),
1.1.26Β Grade 34βUNS R53445. Titanium alloy (0.4β% nickel, 0.015β% palladium, 0.025β% ruthenium, 0.15β% chromium),
1.1.27Β Grade 35βUNS R56340. Titanium alloy (4.5β% aluminum, 2β% molybdenum, 1.6β% vanadium, 0.5β% iron, 0.3β% silicon),
1.1.28Β Grade 36βUNS R58450. Titanium alloy (45β% niobium),
1.1.29Β Grade 37βUNS R52815. Titanium alloy (1.5β% aluminum), and
1.1.30Β Grade 38βUNS R54250. Titanium alloy (4β% aluminum, 2.5β% vanadium, 1.5β% iron).
Note 1:Β H grade material is identical to the corresponding numeric grade (that is, Grade 2H = Grade 2) except for the higher guaranteed minimum UTS, and may always be certified as meeting the requirements of its corresponding numeric grade. Grades 2H, 7H, 16H, and 26H are intended primarily for pressure vessel use.
1.2Β The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.3Β This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
This specification covers the requirements for 34 grades of titanium and titanium alloy seamless pipe intended for general corrosion resisting and elevated temperature service. Alloys may be supplied in the following conditions: Grades 5, 23, 24, 25, 29, 35, or 36 β annealed or aged; Grades 9, 18, 28, or 38 β cold-worked and stress-relieved or annealed; Grades 9, 18, 23, 28, or 29 β transformed-beta condition; and Grades 19, 20, or 21 β solution-treated or solution-treated and aged. The grades shall conform to the required chemical composition for nitrogen, carbon, hydrogen, iron, oxygen, aluminum, vanadium, tin, ruthenium, palladium, chromium, nickel, niobium, zirconium, silicon, and titanium. Chemical analysis and product analysis shall be performed. Mechanical requirements shall conform to the required room temperature values for tensile strength, yield strength, and elongation. The following shall also be performed: tension, flattening, bend, and hydrostatic tests.
| SDO | ASTM: ASTM International |
| Document Number | B861 |
| Publication Date | April 1, 2024 |
| Language | en - English |
| Page Count | 9 |
| Revision Level | 24 |
| Supercedes | |
| Committee | B10.01 |