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ASTM D6175-03

(Test Method)

Standard Test Method for Radial Crush Strength of Extruded Catalyst and Catalyst Carrier Particles

Standard Test Method for Radial Crush Strength of Extruded Catalyst and Catalyst Carrier Particles

SIGNIFICANCE AND USE
This test method is intended to provide information on the ability of an extruded catalyst to retain physical integrity during use.
SCOPE
1.1 This test method covers and is suitable for determining the resistance of extruded catalysts and catalyst carriers to compressive force from the side.
1.2 This test method was developed using extruded catalyst and catalyst carriers from 1/16to 1/8 in. in diameter (0.159 to 0.318 cm) and limited to pieces with a length to diameter ratio greater than or equal to 1:1. This test method may be applicable to other diameters.
1.3 This test method is suitable for the determination of mean crush strength per millimetre in the range of 0 to 15 lbf/mm (0 to 65 N/mm).
1.4 The values stated in pounds lbf/mm units are to be regarded as the standard. The values given in parentheses are provided for information only.
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 to determine the applicability of regulatory limitations before use.

General Information

Status
Historical
Publication Date
30-Sep-2003
ICS
19.060 - Mechanical testing
Technical Committee
D32 - Catalysts
Drafting Committee
D32.02 - Physical-Mechanical Properties
Current Stage
Ref Project

Relations

Replaces
ASTM D6175-98 - Standard Test Method for Radial Crush Strength of Extruded Catalyst Particles
Effective Date
01-Oct-2003
Replaced By
ASTM D6175-03(2008) - Standard Test Method for Radial Crush Strength of Extruded Catalyst and Catalyst Carrier Particles
Effective Date
01-Apr-2008

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ASTM D6175-03 - Standard Test Method for Radial Crush Strength of Extruded Catalyst and Catalyst Carrier ParticlesASTM D6175-03 - Standard Test Method for Radial Crush Strength of Extruded Catalyst and Catalyst Carrier Particles
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ASTM D6175-03 - Standard Test Method for Radial Crush Strength of Extruded Catalyst and Catalyst Carrier Particles
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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:D6175–03
Standard Test Method for
Radial Crush Strength of Extruded Catalyst and Catalyst
1
Carrier Particles
This standard is issued under the fixed designation D 6175; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope 3. Terminology
1.1 This test method covers and is suitable for determining 3.1 Definitions—See Terminology D 3766.
the resistance of extruded catalysts and catalyst carriers to 3.2 Definitions of Terms Specific to This Standard:
compressive force from the side. 3.2.1 extruded catalyst particles—cylindrical particles with
1.2 This test method was developed using extruded catalyst uniform cross sections, either solid, hollow core, or multi-
1 1
and catalyst carriers from ⁄16 to ⁄8 in. in diameter (0.159 to lobed, formed by extrusion.
0.318 cm) and limited to pieces with a length to diameter ratio
4. Summary of Test Method
greaterthanorequalto1:1.Thistestmethodmaybeapplicable
4.1 Individual extrudates taken from a representative
to other diameters.
1.3 This test method is suitable for the determination of sample are calcined, measured in length, placed between two
flat surfaces, and subjected to a compressive force. The force
mean crush strength per millimetre in the range of 0 to 15
lbf/mm (0 to 65 N/mm). required to crush the extrudate is measured. The procedure is
replicated, the force per millimetre calculated, and the average
1.4 The values stated in pounds lbf/mm units are to be
regarded as the standard. The values given in parentheses are of all quotients determined.
provided for information only.
5. Significance and Use
1.5 This standard does not purport to address all of the
5.1 This test method is intended to provide information on
safety concerns, if any, associated with its use. It is the
the ability of an extruded catalyst to retain physical integrity
responsibility of the user of this standard to establish appro-
during use.
priate safety and health practices and to determine the
applicability of regulatory limitations before use.
6. Apparatus
2. Referenced Documents
6.1 A suitable compression testing device is required, com-
2
posed of the following:
2.1 ASTM Standards:
6.1.1 Calibrated Pressure or Force Gage, marked for direct
D 3766 Terminology Relating to Catalysts and Catalysis
reading of the force in pounds force (Newtons) with a range
E 177 Practice for Use of the Terms Precision and Bias in
about two times the expected average force reading.Asuitable
ASTM Test Methods
system (mechanical, hydraulic, or pneumatic) must be pro-
E 456 Terminology Relating to Quality and Statistics
vided so that the rate of force applied is both uniform and
E 691 Practice for Conducting and Interlaboratory Study to
controllable within specified limits (see 9.4).
Determine the Precision of a Test Method
6.1.2 Tool Steel Anvils, between which the sample will be
crushed. The faces of the tool steel anvils shall be smooth and
1
This test method is under the jurisdiction of ASTM Committee D32 on
free from hollows or ridges that would interfere with uniform
Catalysts and is the direct responsibility of Subcommittee D32.02 on Physical-
contact along the length of the extrudate. The faces shall be
Mechanical Properties.
parallel to each along their entire length of travel. The faces of
Current edition approved Oct. 1, 2003. Published October 2003. Originally
approved in 1998. Last previous edition approved in 1998 as D 6175–98.
both anvils must be longer in one dimension than the length of
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
the sample pieces to be crushed.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
6.2 Adevice for determining length, reading in millimetres,
Standards volume information, refer to the standard’s Document Summary page on
and of suitable accuracy to measure to the nearest tenth.
the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
D6175–03
7. Sampling
7.1 A test sample of 50 to 200 individual particles shall be
obtained from larger composites by riffling or splitting accord-
3
ing to STP 447A, with the aim of obtaining a representative
sample that represents both the shape and size of the larger
composite. The amount of the sample shall depend on the
precision required and the homogeneity of the material being
tested.Alloftheindividualparticlessampledthathavealength
to diameter ratio greater than or equal to one shall be tested.
7.2 Heat the test sample(s) at
...

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5.1 This test method is intended to provide information on the ability of an extruded catalyst to retain physical integrity during use.
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