ASTM B611-85(2005)
(Test Method)Standard Test Method for Abrasive Wear Resistance of Cemented Carbides
Standard Test Method for Abrasive Wear Resistance of Cemented Carbides
SIGNIFICANCE AND USE
This test method provides a guide to determine the relative abrasive wear resistance of cemented carbides under high-stress abrasion conditions. The abrasive wear is not a measure of wear characteristics of carbides under all conditions and is not to be misconstrued as indicative of wear when carbides are used for machinery. It does show the difference in resistance to abrasive use for different carbide compositions and can be used as a practical test or as a research method for sorting out these differences.
SCOPE
1.1 This test method covers the determination of abrasive wear resistance of cemented carbides.
1.2 The values stated in inch-pound units are to be regarded as the standard. The SI equivalents of inch-pound units are in parentheses and may be approximate.
1.3 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.
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Designation: B611 − 85(Reapproved 2005)
Standard Test Method for
Abrasive Wear Resistance of Cemented Carbides
This standard is issued under the fixed designation B611; 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 and is not to be misconstrued as indicative of wear when
carbides are used for machinery. It does show the difference in
1.1 This test method covers the determination of abrasive
resistance to abrasive use for different carbide compositions
wear resistance of cemented carbides.
and can be used as a practical test or as a research method for
1.2 The values stated in inch-pound units are to be regarded
sorting out these differences.
as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only
5. Apparatus
and are not considered standard.
5.1 Vessel, suitable for holding the abrasive slurry and the
1.3 This standard does not purport to address all of the
wheel (see Fig. 1). One suitable vessel is made of ⁄16-in.
safety concerns, if any, associated with its use. It is the
(5-mm) steel. The internal dimensions are 8 ⁄4 in. (220 mm)
responsibility of the user of this standard to establish appro-
3 1
high, 9 ⁄4 in. (245 mm) long, and 2 ⁄4 in. (60 mm) wide, with a
priate safety and health practices and determine the applica-
5 ⁄2-in. (140-mm) radius at the bottom.
bility of regulatory limitations prior to use.
5.2 Wheel, made of annealedAISI 1020 steel, that rotates in
2. Referenced Documents the center of the vessel at 100 6 5 rpm. The direction of
rotation is from the slurry to the specimen. Four curved vanes
2.1 ASTM Standards:
are affixed to either side of the wheel to agitate and mix the
B311 Test Method for Density of Powder Metallurgy (PM)
slurry and to propel it toward the specimen. The maximum
Materials Containing Less Than Two Percent Porosity
wheel diameter shall be 6.65 in. (169 mm) and the width shall
be 0.500 6 0.005 in. (12.7 6 0.1 mm). The wheel shall be
3. Terminology
discardedwhenitsdiameterhasdecreasedto6.50in.(165mm)
3.1 Definitions:
minimum, after repetitive use. In use, a slight burr will form at
3.1.1 abrasion resistance, n—the specimen’s unit loss in
the periphery. This burr will compensate for wheel wear by
volume per revolution of the steel wheel carrying the abrasive.
widening the wear path in the specimen; it shall not be
3.1.2 abrasive wear, n—that wear caused by a slurried
removed.
abrasive on a rotating surface, contacting the specimen surface
5.3 Specimen Holder, to be pressed against the periphery of
under pressure.
the wheel. This specimen holder shall be mounted so that not
3.1.3 wear number, n—thereciprocalofthespecimen’stotal
more than 0.002 in. (0.05 mm) of side play occurs at the line
−3
volume loss in units of cm .
of contact between the specimen and the wheel. The specimen
holder shall be so placed that the specimen is tangential to the
4. Significance and Use
wheel at the center line of the wheel and specimen. A 10-kg
4.1 This test method provides a guide to determine the
weightshallbeattachedtotheotherendofthespecimenholder
relative abrasive wear resistance of cemented carbides under
lever arm. With a lever advantage of two-to-one, a force of 20
high-stress abrasion conditions. The abrasive wear is not a
kg is thus applied to the specimen at the line of contact.
measureofwearcharacteristicsofcarbidesunderallconditions
6. Test Specimen
1 3
This test method is under the jurisdiction of ASTM Committee G02 on Wear
6.1 The specimen shall be at least ⁄16 in. (5 mm) thick and
and Erosion and is the direct responsibility of Subcommittee G02.30 on Abrasive
have a surface area large enough so that the wear will be
Wear.
confined within its edges.The specimen may be as large as the
Current edition approved Oct. 1, 2005. Published October 2005. Originally
´1
specimen holder of the apparatus will permit. Dimensional
approved in 1976. Last previous edition approved in 2000 as B611–85 (2000) .
DOI: 10.1520/B0611-85R05.
tolerances are not important, but the specimen shall be flat
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