ASTM B817-08
(Specification)Standard Specification for Powder Metallurgy (PM) Titanium Alloy Structural Components (Withdrawn 2013)
Standard Specification for Powder Metallurgy (PM) Titanium Alloy Structural Components (Withdrawn 2013)
ABSTRACT
This specification deals with powder metallurgy structural components fabricated from commercially pure titanium powder mixed with master alloy powder and elemental powders to yield combined material chemistries comparable to ingot metallurgy alloys Titanium 6A1-4V and Titanium 6A1-6V2Sn. The following are the materials covered: Type I and II, Grade 1 and 2, and Class A and B. The chemical composition shall conform to the required values of aluminum, vanadium, tin, iron, copper, oxygen, hydrogen, nitrogen, carbon, sodium, chlorine, silicon, and titanium. Chemical analysis shall be made. Physical properties such as density shall be determined. Mechanical properties shall conform to the required tension properties: tensile strength, yield strength, elongation and reduction of area.
SCOPE
1.1 This specification covers powder metallurgy (PM) structural components fabricated from commercially pure (CP) titanium powder mixed with master alloy powder and elemental powders in appropriate quantity to yield combined material chemical compositions comparable to ingot metallurgy (I/M) alloys Titanium 6A1-4V and Titanium 6A1-6V-2Sn.
1.2 This specification covers the following materials:
1.2.1 Two types depending on alloy composition as detailed in Table 1.
1.2.1.1 Type I is comparable to I/M Ti-6A1-4V.
1.2.1.2 Type II is comparable to I/M Ti-6A1-6V-2Sn.
1.2.2 Two grades of each type that result from the specific titanium powder used are as follows:
1.2.2.1 Grade 1 is made from sponge fines with residual levels of chlorine and sodium.
1.2.2.2 Grade 2 is made from hydride/dehydride (HDH) or other process titanium with significantly lower chlorine and sodium content.
1.2.3 Two classes as a function of density (see Table 2) are as follows:
1.2.3.1 Class A density ratio is 94 % minimum.
1.2.3.2 Class B density ratio is 99 % minimum. (Warning—CP titanium powder may be pyrophoric; its use may involve an explosion hazard.)
1.3 The values stated in inch-pound units are to be regarded as the standard. The SI units given in parentheses are for information only.
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 and health practices and determine the applicability of regulatory limitations prior to use. Specific precautionary statements are given in 1.2.3.2.
General Information
Relations
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:B817 −08
StandardSpecification for
Powder Metallurgy (PM) Titanium Alloy Structural
1
Components
This standard is issued under the fixed designation B817; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* 2. Referenced Documents
2
2.1 ASTM Standards:
1.1 Thisspecificationcoverspowdermetallurgy(PM)struc-
tural components fabricated from commercially pure (CP) B243 Terminology of Powder Metallurgy
B311 Test Method for Density of Powder Metallurgy (PM)
titanium powder mixed with master alloy powder and elemen-
tal powders in appropriate quantity to yield combined material Materials Containing Less Than Two Percent Porosity
B328 Test Method for Density, Oil Content, and Intercon-
chemical compositions comparable to ingot metallurgy (I/M)
alloys Titanium 6A1-4V and Titanium 6A1-6V-2Sn. nected Porosity of Sintered Metal Structural Parts and
3
Oil-Impregnated Bearings (Withdrawn 2009)
1.2 This specification covers the following materials:
E29 Practice for Using Significant Digits in Test Data to
1.2.1 Two types depending on alloy composition as detailed
Determine Conformance with Specifications
in Table 1.
1.2.1.1 Type I is comparable to I/M Ti-6A1-4V.
3. Terminology
1.2.1.2 Type II is comparable to I/M Ti-6A1-6V-2Sn.
3.1 Definitions—Definitions of powder metallurgy terms
1.2.2 Two grades of each type that result from the specific
can be found in Terminology B243.
titanium powder used are as follows:
3.2 Descriptions of Terms Specific to This Standard—
1.2.2.1 Grade 1 is made from sponge fines with residual
Additional descriptive information is available in the Related
levels of chlorine and sodium.
Material section ofVolume 02.05 of the Annual Book of ASTM
1.2.2.2 Grade 2 is made from hydride/dehydride (HDH) or
Standards.
other process titanium with significantly lower chlorine and
sodium content.
4. Ordering Information
1.2.3 Two classes as a function of density (see Table 2) are
4.1 Orders for components under this specification shall
as follows:
include the following information:
1.2.3.1 Class A density ratio is 94 % minimum.
4.1.1 Dimensions (see Section 9),
1.2.3.2 Class B density ratio is 99 % minimum.
4.1.2 Chemical composition (see Section 6 and Table 1),
(Warning— CP titanium powder may be pyrophoric; its use
4.1.3 Density (see 7.1 and Table 2),
may involve an explosion hazard. )
4.1.4 Mechanical properties (see Section 8 and Table X1.1),
1.3 The values stated in inch-pound units are to be regarded
and
as the standard. The SI units given in parentheses are for
4.1.5 Certification (see Section 13).
information only.
5. Materials and Manufacture
1.4 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
5.1 Structural components shall be fabricated by cold com-
responsibility of the user of this standard to establish appro-
pacting a mixture of CP titanium, master alloy, and other
priate safety and health practices and determine the applica-
elemental powders into suitable shapes. The compacts shall be
bility of regulatory limitations prior to use. Specific precau-
vacuum sintered and hot isostatically pressed, if necessary, to
tionary statements are given in 1.2.3.2.
provide parts conforming to the requirements of this specifi-
cation.
1 2
This specification is under the jurisdiction ofASTM Committee B09 on Metal For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Powders and Metal Powder Productsand is the direct responsibility of Subcommit- contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
tee B09.11 on Near Full Density Powder Metallurgy Materials. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved Nov. 1, 2008. Published December 2008. Originally the ASTM website.
3
approved in 1991. Last previous edition approved in 2003 as B817 – 03. DOI: The last approved version of this historical standard is referenced on
10.1520/B0817-08. www.astm.org.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
B817−08
TABLE 1 Chemical Composition Requirements
8.2 The required mechanical properties and a sampling plan
A
Element Composition, Weight % shall be agreed upon between the manufacturer and the
Grade 1 Grade 2
purchaser. All shipments of components subsequent to the
Type I Type II Type I Type II
establishment of testing conditions shall conform to the agreed
A
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.