ASTM B528-16

Standard Test Method for Transverse Rupture Strength of Powder Metallurgy (PM) Specimens

SIGNIFICANCE AND USE
4.1 This test method is used to measure the strength of sintered, including post-treated, specimens. Transverse rupture strength is not a design value. For many sintered materials, transverse rupture strength is approximately twice the ultimate tensile strength.
SCOPE
1.1 This test method covers determination of the transverse rupture strength of sintered, including post-treated, powder metallurgy test specimens by subjecting them to a uniformly increasing transverse force under controlled conditions. The term “transverse rupture strength” as used herein, defines the stress, calculated from the flexure formula required to break a specimen as a simple beam supported near the ends and applying the force midway between the fixed line center of the supports.  
1.2 Limitations—The transverse rupture test is only applicable to relatively brittle materials. In cases where a ductile specimen is being tested and the permanent deflection as a result of testing exceeds 0.02 in. (0.5 mm), the test results may be questionable.  
1.3 Test Method B406 should be consulted for determining the transverse rupture strength of cemented carbides.  
1.4 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.  
1.5 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.

General Information

• Status: Historical
• Publication Date: 30-Sep-2016
• ICS: 77.160 - Powder metallurgy
• Technical Committee: B09 - Metal Powders and Metal Powder Products
• Drafting Committee: B09.05 - Structural Parts

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: B528 − 16
Standard Test Method for
Transverse Rupture Strength of Powder Metallurgy (PM)
1
Specimens
This standard is issued under the fixed designation B528; 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* pacted from Metal Powders
B406 Test Method for Transverse Rupture Strength of Ce-
1.1 This test method covers determination of the transverse
mented Carbides
rupture strength of sintered, including post-treated, powder
B925 Practices for Production and Preparation of Powder
metallurgy test specimens by subjecting them to a uniformly
Metallurgy (PM) Test Specimens
increasing transverse force under controlled conditions. The
E691 Practice for Conducting an Interlaboratory Study to
term “transverse rupture strength” as used herein, defines the
Determine the Precision of a Test Method
stress, calculated from the flexure formula required to break a
specimen as a simple beam supported near the ends and
3. Terminology
applying the force midway between the fixed line center of the
3.1 Definitions—For definitions of terms in this test method,
supports.
see Terminology B243.
1.2 Limitations— The transverse rupture test is only appli-
cable to relatively brittle materials. In cases where a ductile
4. Significance and Use
specimen is being tested and the permanent deflection as a
4.1 This test method is used to measure the strength of
result of testing exceeds 0.02 in. (0.5 mm), the test results may
sintered, including post-treated, specimens. Transverse rupture
be questionable.
strength is not a design value. For many sintered materials,
1.3 Test Method B406 should be consulted for determining
transverse rupture strength is approximately twice the ultimate
the transverse rupture strength of cemented carbides.
tensile strength.
1.4 Thevaluesstatedininch-poundunitsaretoberegarded
5. Apparatus
as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only
5.1 Micrometer, capable of measuring with a resolution of
and are not considered standard.
0.0001 in. (0.002 mm).
1.5 This standard does not purport to address all of the
5.2 Transverse Rupture Strength Fixture,asshowninFig.1.
safety concerns, if any, associated with its use. It is the
5.3 Compression Testing Machine, readable to within 0.1 %
responsibility of the user of this standard to establish appro-
of full scale reading. Use the lowest testing range that can
priate safety and health practices and determine the applica-
provide a measurable result.
bility of regulatory limitations prior to use.
6. Test Specimen
2. Referenced Documents
6.1 The thin test specimen shall have the shape and dimen-
2
2.1 ASTM Standards:
sions shown in the figure titled PM Transverse Rupture
B243 Terminology of Powder Metallurgy
Strength Test Specimen of Practices B925.
B312 Test Method for Green Strength of Specimens Com-
7. Procedure
7.1 Prepare test specimens by pressing and sintering using
1
This test method is under the jurisdiction of ASTM Committee B09 on Metal
tooling shown in the figure titled Transverse Rupture Test
Powders and Metal Powder Products and is the direct responsibility of Subcommit-
tee B09.05 on Structural Parts.
Specimen, Typical Laboratory Tooling of Practices B925,or
Current edition approved Oct. 1, 2016. Published October 2016. Originally
machine from finished parts. Measure the width and thickness
approved in 1970. Last previous edition approved in 2012 as B528 – 12. DOI:
of the specimens to the nearest 0.001 in. (0.02 mm) with a
10.1520/B0528-16.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or micrometer.
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
7.2 Locatethespecimeninthetransverserupturetestfixture
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. perpendicular to the supporting rods.Apply compressive force
*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 ----------------------
B528 − 16
NOTE 1—This fixture is used in Test Method B312.
FIG. 1 Transverse Rupture Test Fixture
parallel to the pressing direction of the specimen at a no-load 9. Report
crosshead speed of not greater than 0.2 in./min (5 mm/min)
9.1 Report the transverse rupture strength as the average of
until rupture occurs. Record the load at which the specimen
at least three (3) tests to the nearest 1000 psi (10 MPa). When
breaks (force re
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: B528 − 12 B528 − 16
Standard Test Method for
Transverse Rupture Strength of Powder Metallurgy (PM)
1
Specimens
This standard is issued under the fixed designation B528; 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*
1.1 This test method covers determination of the transverse rupture strength of sintered, including post-treated, powder
metallurgy test specimens by subjecting them to a uniformly increasing transverse force under controlled conditions. The term
“transverse rupture strength” as used herein, defines the stress, calculated from the flexure formula required to break a specimen
as a simple beam supported near the ends and applying the force midway between the fixed line center of the supports.
1.2 Limitations— The transverse rupture test is only applicable to relatively brittle materials. In cases where a ductile specimen
is being tested and the permanent deflection as a result of testing exceeds 0.0200.02 in. (0.50(0.5 mm), the test results may be
questionable.
1.3 Test Method B406 should be consulted for determining the transverse rupture strength of cemented carbides.
1.4 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.
1.5 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.
2. Referenced Documents
2
2.1 ASTM Standards:
B243 Terminology of Powder Metallurgy
B312 Test Method for Green Strength of Specimens Compacted from Metal Powders
B406 Test Method for Transverse Rupture Strength of Cemented Carbides
B528 Test Method for Transverse Rupture Strength of Powder Metallurgy (PM) Specimens
B925 Practices for Production and Preparation of Powder Metallurgy (PM) Test Specimens
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
3. Terminology
3.1 Definitions—For definitions of terms in this test method, see Terminology B243.
4. Significance and Use
4.1 This test method is used to measure the strength of sintered, including post-treated, specimens. Transverse rupture strength
is not a design value. For many sintered materials, transverse rupture strength is approximately twice the ultimate tensile strength.
5. Apparatus
5.1 Micrometer, capable of measuring with a resolution of 0.0001 in. (0.002 mm).
5.2 Transverse Rupture Strength Fixture, as shown in Fig. 1.
1
This test method is under the jurisdiction of ASTM Committee B09 on Metal Powders and Metal Powder Products and is the direct responsibility of Subcommittee
B09.05 on Structural Parts.
Current edition approved Nov. 1, 2012Oct. 1, 2016. Published November 2012October 2016. Originally approved in 1970. Last previous edition approved in 20102012
as B528 – 10.B528 – 12. DOI: 10.1520/B0528-12.10.1520/B0528-16.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*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 ----------------------
B528 − 16
NOTE 1—This fixture is used in Test Method B312.
FIG. 1 Transverse Rupture Test Fixture
5.3 Compression Testing Machine, readable to within 0.1 % of full scale reading. Use the lowest testing range that can provide
a measurable result.
6. Test Specimen
6.1 The thin test specimen shall have the shape and dimensions shown in the figure titled PM Transverse Rupture Strength Test
Specimen of Practices B925.
7. Procedure
7.1 Prepare test specimens by pressing and sintering using tooling shown in the figure titled Transverse Rupture Test Specimen,
Typical Laboratory Tooling of Practices B925, or machine from finished parts. Measure the width and thickness of the specimens
to the nearest 0.001 in. (0.02 mm) with a micrometer.
7.2 Loca
...