ASTM B338-17(2021) - 1.11.2021
 
1. Scope

1.1This specification2 covers the requirements for 28 grades of titanium and titanium alloy tubing intended for surface condensers, evaporators, and heat exchangers, as follows:

1.1.1Grade 1UNS R50250. Unalloyed titanium,

1.1.2Grade 2UNS R50400. Unalloyed titanium,

1.1.2.1Grade 2HUNS R50400. Unalloyed titanium (Grade 2 with 58 ksi (400 MPa) minimum UTS),

1.1.3Grade 3UNS R50550. Unalloyed titanium,

1.1.4Grade 7UNS R52400. Unalloyed titanium plus 0.12 to 0.25 % palladium,

1.1.4.1Grade 7HUNS R52400. Unalloyed titanium plus 0.12 to 0.25 % palladium (Grade 7 with 58 ksi (400 MPa) minimum UTS),

1.1.5Grade 9UNS R56320. Titanium alloy (3 % aluminum, 2.5 % vanadium),

1.1.6Grade 11UNS R52250. Unalloyed titanium plus 0.12 to 0.25 % palladium,

1.1.7Grade 12UNS R53400. Titanium alloy (0.3 % molybdenum, 0.8 % nickel),

1.1.8Grade 13UNS R53413. Titanium alloy (0.5 % nickel, 0.05 % ruthenium),

1.1.9Grade 14UNS R53414. Titanium alloy (0.5 % nickel, 0.05 % ruthenium),

1.1.10Grade 15UNS R53415. Titanium alloy (0.5 % nickel, 0.05 % ruthenium),

1.1.11Grade 16UNS R52402. Unalloyed titanium plus 0.04 to 0.08 % palladium,

1.1.11.1Grade 16HUNS R52402. Unalloyed titanium plus 0.04 to 0.08 % palladium (Grade 16 with 58 ksi (400 MPa) minimum UTS),

1.1.12Grade 17UNS R52252. Unalloyed titanium plus 0.04 to 0.08 % palladium,

1.1.13Grade 18UNS R56322. Titanium alloy (3 % aluminum, 2.5 % vanadium) plus 0.04 to 0.08 % palladium,

1.1.14Grade 26UNS R52404. Unalloyed titanium plus 0.08 to 0.14 % ruthenium,

1.1.14.1Grade 26HUNS R52404. Unalloyed titanium plus 0.08 to 0.14 % ruthenium (Grade 26 with 58 ksi (400 MPa) minimum UTS),

1.1.15Grade 27UNS R52254. Unalloyed titanium plus 0.08 to 0.14 % ruthenium,

1.1.16Grade 28UNS R56323. Titanium alloy (3 % aluminum, 2.5 % vanadium) plus 0.08 to 0.14 % ruthenium,

1.1.17Grade 30UNS R53530. Titanium alloy (0.3 % cobalt, 0.05 % palladium),

1.1.18Grade 31UNS R53532. Titanium alloy (0.3 % cobalt, 0.05 % palladium),

1.1.19Grade 33UNS R53442. Titanium alloy (0.4 % nickel, 0.015 % palladium, 0.025 % ruthenium, 0.15 % chromium),

1.1.20Grade 34UNS R53445. Titanium alloy (0.4 % nickel, 0.015 % palladium, 0.025 % ruthenium, 0.15 % chromium),

1.1.21Grade 35UNS R56340. Titanium alloy (4.5 % aluminum, 2 % molybdenum, 1.6 % vanadium, 0.5 % iron, 0.3 % silicon),

1.1.22Grade 36UNS R58450. Titanium alloy (45 % niobium),

1.1.23Grade 37UNS R52815. Titanium alloy (1.5 % aluminum),

1.1.24Grade 38UNS R54250. Titanium alloy (4 % aluminum, 2.5 % vanadium, 1.5 % iron), and

1.1.25Grade 39UNS R53390. Titanium alloy (0.25 % iron, 0.4 % silicon).

Note 1: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.

1.2The 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.

1.3This 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.

 
2. Referenced Documents

E8-04

Standard Test Methods for Tension Testing of Metallic Materials

A370-26

Standard Test Methods and Definitions for Mechanical Testing of Steel Products

E2371-21a

Standard Test Method for Analysis of Titanium and Titanium Alloys by Direct Current Plasma and Inductively Coupled Plasma Atomic Emission Spectrometry (Performance-Based Test Methodology) (Includes all amendments and changes 1/6/2022).

E1941-10(2024)

Standard Test Method for Determination of Carbon in Refractory and Reactive Metals and Their Alloys by Combustion Analysis

E2626-25

Standard Guide for Spectrometric Analysis of Reactive and Refractory Metals

E1447-22

Standard Test Method for Determination of Hydrogen in Reactive Metals and Reactive Metal Alloys by Inert Gas Fusion with Detection by Thermal Conductivity or Infrared Spectrometry

E1409-13(2021)

Standard Test Method for Determination of Oxygen and Nitrogen in Titanium and Titanium Alloys by Inert Gas Fusion

E29-22

Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications