1.1Β This specification2 covers the requirements for 28 grades of titanium and titanium alloy tubing intended for surface condensers, evaporators, and heat exchangers, 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 7βUNS R52400. Unalloyed titanium plus 0.12 to 0.25β% palladium,
1.1.4.1Β Grade 7HβUNS R52400. Unalloyed titanium plus 0.12 to 0.25β% palladium (Grade 7 with 58 ksi (400 MPa) minimum UTS),
1.1.5Β Grade 9βUNS R56320. Titanium alloy (3β% aluminum, 2.5β% vanadium),
1.1.6Β Grade 11βUNS R52250. Unalloyed titanium plus 0.12 to 0.25β% palladium,
1.1.7Β Grade 12βUNS R53400. Titanium alloy (0.3β% molybdenum, 0.8β% nickel),
1.1.8Β Grade 13βUNS R53413. Titanium alloy (0.5β% nickel, 0.05β% ruthenium),
1.1.9Β Grade 14βUNS R53414. Titanium alloy (0.5β% nickel, 0.05β% ruthenium),
1.1.10Β Grade 15βUNS R53415. Titanium alloy (0.5β% nickel, 0.05β% ruthenium),
1.1.11Β Grade 16βUNS R52402. Unalloyed titanium plus 0.04 to 0.08β% palladium,
1.1.11.1Β Grade 16HβUNS R52402. Unalloyed titanium plus 0.04 to 0.08β% palladium (Grade 16 with 58 ksi (400 MPa) minimum UTS),
1.1.12Β Grade 17βUNS R52252. Unalloyed titanium plus 0.04 to 0.08β% palladium,
1.1.13Β Grade 18βUNS R56322. Titanium alloy (3β% aluminum, 2.5β% vanadium) plus 0.04 to 0.08β% palladium,
1.1.14Β Grade 26βUNS R52404. Unalloyed titanium plus 0.08 to 0.14β% ruthenium,
1.1.14.1Β Grade 26HβUNS R52404. Unalloyed titanium plus 0.08 to 0.14β% ruthenium (Grade 26 with 58 ksi (400 MPa) minimum UTS),
1.1.15Β Grade 27βUNS R52254. Unalloyed titanium plus 0.08 to 0.14β% ruthenium,
1.1.16Β Grade 28βUNS R56323. Titanium alloy (3β% aluminum, 2.5β% vanadium) plus 0.08 to 0.14β% ruthenium,
1.1.17Β Grade 30βUNS R53530. Titanium alloy (0.3β% cobalt, 0.05β% palladium),
1.1.18Β Grade 31βUNS R53532. Titanium alloy (0.3β% cobalt, 0.05β% palladium),
1.1.19Β Grade 33βUNS R53442. Titanium alloy (0.4β% nickel, 0.015β% palladium, 0.025β% ruthenium, 0.15β% chromium),
1.1.20Β Grade 34βUNS R53445. Titanium alloy (0.4β% nickel, 0.015β% palladium, 0.025β% ruthenium, 0.15β% chromium),
1.1.21Β Grade 35βUNS R56340. Titanium alloy (4.5β% aluminum, 2β% molybdenum, 1.6β% vanadium, 0.5β% iron, 0.3β% silicon),
1.1.22Β Grade 36βUNS R58450. Titanium alloy (45β% niobium),
1.1.23Β Grade 37βUNS R52815. Titanium alloy (1.5β% aluminum),
1.1.24Β Grade 38βUNS R54250. Titanium alloy (4β% aluminum, 2.5β% vanadium, 1.5β% iron), and
1.1.25Β Grade 39βUNS R53390. Titanium alloy (0.25 % iron, 0.4 % silicon).
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 28 grades of seamless and welded titanium alloy tubes for surface condensers, evaporators, and heat exchangers. Seamless tube shall be made from hollow billet by any cold reducing or cold drawing process that will yield a product meeting the requirements prescribed. Welded tube shall be made from flat-rolled product by an automatic arc-welding process. The welded tube shall be sufficiently cold worked to final size in order to transform the cast weld microstructure into a typical equiaxed microstructure in the weld upon subsequent heat treatment. The titanium shall conform to the chemical requirements prescribed. The room temperature tensile properties of the tube in the condition normally supplied shall conform to the requirements prescribed. Tubing shall withstand, without cracking, flattening under a load applied gradually at room temperature until the distance between the load platens is not more than the required height. Welded tube shall be subjected to a reverse flattening test in accordance with supplement II of test methods and definitions A 370. Welded tubing shall be tested using both a non-destructive electromagnetic test and an ultrasonic test method. Seamless and welded/cold worked tubing shall be tested using an ultrasonic test method. Welded tubing shall be tested with a hydrostatic or pneumatic test method. Seamless tubing shall be tested with an electromagnetic or hydrostatic or pneumatic test method.
| SDO | ASTM: ASTM International |
| Document Number | B338 |
| Publication Date | July 1, 2017 |
| Language | en - English |
| Page Count | 10 |
| Revision Level | 17 |
| Supercedes | |
| Committee | B10.01 |