1.1 This specification covers powder metallurgy (PM) structural components fabricated from:
1.1.1 Commercially pure (CP) (that is, unalloyed) titanium powder,
1.1.2 Pre-alloyed powders.
1.1.3 Mixtures of elemental powders or mixtures of elemental powders and pre-alloyed powders.
1.2 This specification covers:
1.2.1 Grade 1 PM—Unalloyed titanium,
1.2.2 Grade 2 PM—Unalloyed titanium,
1.2.3 Grade 3 PM—Unalloyed titanium,
1.2.4 Grade 4 PM—Unalloyed titanium,
1.2.5 Grade 5 PM—Titanium alloy (6 % aluminum, 4 % vanadium),
1.2.6 Grade 9 PM—Titanium alloy (3 % aluminum,
2.5 % vanadium),
1.2.7 Ti-6Al-4V PM Low Interstitial (LI),
1.2.8 Ti-6Al-6V-2Sn PM.
1.3 The values stated in SI units are to be regarded as the standard. No other units of measurement are included in this standard.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.5 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.
ASTM B988-18(2022) Referenced Document
ASTM B243 Standard Terminology of Powder Metallurgy*, 2023-05-01 Update
ASTM B311 Test Method for Density Determination for Powder Metallurgy (P/M) Materials Containing Less Than Two Percent Porosity
ASTM B348 Standard Specification for Titanium and Titanium Alloy Bars and Billets*, 2024-04-21 Update
ASTM B923 Standard Test Method for Metal Powder Skeletal Density by Helium or Nitrogen Pycnometry*, 2023-11-15 Update
ASTM B962 Standard Test Methods for Density of Compacted or Sintered Powder Metallurgy (PM) Products Using Archimedes’ Principle*, 2023-09-01 Update
ASTM E1409 Standard Test Method for Determination of Oxygen in Titanium and Titanium Alloys by the Inert Gas Fusion Technique
ASTM E1447 Standard Test Method for Determination of Hydrogen in Titanium and Titanium Alloys by the Inert Gas Fusion Thermal Conductivity Method
ASTM E1941 Standard Test Method for Determination of Carbon in Refractory and Reactive Metals and Their Alloys
ASTM E2371 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)*, 2024-04-21 Update
ASTM E2626 Standard Guide for Spectrometric Analysis of Reactive and Refractory Metals*, 2024-04-21 Update
ASTM E29 Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
ASTM E539 Standard Test Method for X-Ray Emission Spectrometric Analysis of 6AI-4V Titanium Alloy
ASTM E8/E8M Standard Test Methods for Tension Testing of Metallic Materials*, 2024-01-01 Update
ASTM B988-18(2022) history
2022ASTM B988-18(2022) Standard Specification for Powder Metallurgy (PM) Titanium and Titanium Alloy Structural Components
2018ASTM B988-18 Standard Specification for Powder Metallurgy (PM) Titanium and Titanium Alloy Structural Components
2013ASTM B988-13 Standard Specification for Powder Metallurgy (PM) Titanium and Titanium Alloy Structural Components