ASTM B988-18(2022)

Standard Specification for Powder Metallurgy (PM) Titanium and Titanium Alloy Structural Components

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STANDARD published on 1.9.2022

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The information about the standard:

Designation standards: ASTM B988-18(2022)
Publication date standards: 1.9.2022
SKU: NS-1084169
The number of pages: 4
Approximate weight : 12 g (0.03 lbs)
Country: American technical standard
Category: Technical standards ASTM

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Powder metallurgy

Annotation of standard text ASTM B988-18(2022) :

This specification covers powder metallurgy (PM) structural components fabricated from commercially pure (CP) (that is, unalloyed) titanium powder, pre-alloyed powders, and mixtures of elemental powders or mixtures of elemental powders and pre-alloyed powders. It addresses ordering information, materials and manufacture, chemical composition requirements, tensile requirements, physical properties, mechanical properties, dimensions, mass, permissible variations, sampling, inspection, and certification.

Keywords:
CIP, cold isostatic pressing, compaction, HIP, hot isostatic pressing, PIF, pneumatic isostatic forging, powder forging, powder metallurgy, powder roll compaction, pre-alloyed powder, sinter, structural components, Ti Grade 1, Ti Grade 2, Ti Grade 3, Ti Grade 4, Ti-6Al4V, Ti-6A1-6V-2Sn, Ti 3Al2.5V, titanium, titanium alloys, titanium powder,, ICS Number Code 77.160 (Powder metallurgy)

Additional information

1. Scope

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 PMUnalloyed titanium,

1.2.2?Grade 2 PMUnalloyed titanium,

1.2.3?Grade 3 PMUnalloyed titanium,

1.2.4?Grade 4 PMUnalloyed titanium,

1.2.5?Grade 5 PMTitanium alloy (6 % aluminum, 4 % vanadium),

1.2.6?Grade 9 PMTitanium 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.

2. Referenced Documents

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).
E2626-08	Standard Guide for Spectrometric Analysis of Reactive and Refractory Metals
B243-23	Standard Terminology of Powder Metallurgy
B311-22	Standard Test Method for Density of Powder Metallurgy (PM) Materials Containing Less Than Two Percent Porosity
B348-13	Standard Specification for Titanium and Titanium Alloy Bars and Billets
B923-23	Standard Test Method for Metal Powder Skeletal Density by Helium or Nitrogen Pycnometry
E1941-10(2016)	Standard Test Method for Determination of Carbon in Refractory and Reactive Metals and Their Alloys by Combustion Analysis
E8/E8M-24	Standard Test Methods for Tension Testing of Metallic Materials
E29-22	Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E539-19	Standard Test Method for Analysis of Titanium Alloys by Wavelength Dispersive X-Ray Fluorescence Spectrometry
E1409-13(2021)	Standard Test Method for Determination of Oxygen and Nitrogen in Titanium and Titanium Alloys by Inert Gas Fusion
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
B962-23	Standard Test Methods for Density of Compacted or Sintered Powder Metallurgy (PM) Products Using Archimedes’ Principle

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