ASTM A1038-10
(Practice)Standard Practice for Portable Hardness Testing by the Ultrasonic Contact Impedance Method
Standard Practice for Portable Hardness Testing by the Ultrasonic Contact Impedance Method
SIGNIFICANCE AND USE
The hardness of a material is a defined quantity having many scales and being dependent on the way the test is performed. In order to avoid the creation of a new practice involving a new hardness scale, the UCI method converts into common hardness values, for example, HV, HRC, etc.
The UCI hardness test is a superficial determination, only measuring the hardness condition of the surface contacted. The results generated at a specific location do not represent the part at any other surface location and yield no information about the material at subsurface locations.
The UCI hardness test may be used on large or small components at various locations. It can be used to make hardness measurements on positions difficult to access, such as tooth flanks or roots of gears.
SCOPE
1.1 This practice covers the determination of comparative hardness values by applying the Ultrasonic Contact Impedance Method (UCI Method).
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
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.
General Information
Relations
Buy Standard
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:A1038–10
Standard Practice for
Portable Hardness Testing by the Ultrasonic Contact
1
Impedance Method
This standard is issued under the fixed designation A1038; 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* E177 Practice for Use of the Terms Precision and Bias in
ASTM Test Methods
1.1 This practice covers the determination of comparative
E384 Test Method for Knoop and Vickers Hardness of
hardness values by applying the Ultrasonic Contact Impedance
Materials
Method (UCI Method).
E691 Practice for Conducting an Interlaboratory Study to
1.2 The values stated in SI units are to be regarded as
Determine the Precision of a Test Method
standard. No other units of measurement are included in this
standard.
3. Terminology
1.3 This standard does not purport to address all of the
3.1 Definitions:
safety concerns, if any, associated with its use. It is the
3.1.1 UCI method—Ultrasonic Contact Impedance, a hard-
responsibility of the user of this standard to establish appro-
ness testing method developed by Dr. Claus Kleesattel in 1961
priate safety and health practices and determine the applica-
based on the measurement of the frequency shift of a resonat-
bility of regulatory limitations prior to use.
ing rod caused by the essentially elastic nature of the finite area
2. Referenced Documents of contact between the indenter and the test piece during the
2
penetration.
2.1 ASTM Standards:
3.1.2 UCI hardness test—a hardness testing practice using a
A370 Test Methods and Definitions for Mechanical Testing
calibrated instrument by pressing a resonating rod with a
of Steel Products
defined indenter, for example, a Vickers diamond, with a fixed
E10 Test Method for Brinell Hardness of Metallic Materials
force against the surface of the part to be tested.
E18 Test Methods for Rockwell Hardness of Metallic Ma-
3.1.3 calibration—determination of the specific values of
terials
the significant operating parameters of the UCI instrument by
E92 Test Method for Vickers Hardness of Metallic Materi-
3 comparisonwithvaluesindicatedbyastandardizedworkbench
als
hardness tester or by a set of certified reference test pieces.
E140 Hardness Conversion Tables for Metals Relationship
3.1.4 verification—checking or testing the UCI instrument
Among Brinell Hardness, Vickers Hardness, Rockwell
to ensure conformance with this practice.
Hardness, Superficial Hardness, Knoop Hardness, and
3.1.5 surface finish—all references to surface finish in this
Scleroscope Hardness
practice are defined as surface roughness (that is, Ra = average
roughness value).
1
This practice is under the jurisdiction of ASTM Committee A01 on Steel,
4. Significance and Use
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
A01.06 on Steel Forgings and Billets. 4.1 The hardness of a material is a defined quantity having
Current edition approved May 15, 2010. Published June 2010. Originally
many scales and being dependent on the way the test is
approved in 2005. Last previous edition approved in 2008 as A1038 – 08. DOI:
performed. In order to avoid the creation of a new practice
10.1520/A1038-10.
2
involving a new hardness scale, the UCI method converts into
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
common hardness values, for example, HV, HRC, etc.
Standards volume information, refer to the standard’s Document Summary page on
4.2 The UCI hardness test is a superficial determination,
the ASTM website.
3 only measuring the hardness condition of the surface con-
Withdrawn. The last approved version of this historical standard is referenced
on www.astm.org. tacted. The results generated at a specific location do not
*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 ----------------------
A1038–10
Legend:
FIG. 2 Hardness Value versus Frequency Shift of the Oscillating
T = Piezo Transducer
Rod
R = Receiver
O = Oscillating rod
V = indenter, for example, Vickers diamond
m = test material
electric ceramics—the so-called zero frequency, which occurs
FIG. 1 Schematic Description of the UCI Probe
when the indenter is vibrating in air.
5.3.1 A spring inside the probe applies the specified test
load, the vibrating tip penetrates into the material creating an
represent the part at any other surface location and yield no
elasticcontact,whichresultsinapositivefrequencyshiftof
...
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:A1038–08 Designation:A1038–10
Standard Practice for
Portable Hardness Testing by the Ultrasonic Contact
1
Impedance Method
This standard is issued under the fixed designation A1038; 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 practice covers the determination of comparative hardness values by applying the Ultrasonic Contact Impedance
Method (UCI Method).
1.2The measured values are stated in SI units, which are regarded as standard. Equivalent inch-pound values, when given, are
in parentheses and may be approximate.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
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.
2. Referenced Documents
2
2.1 ASTM Standards:
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
E10 Test Method for Brinell Hardness of Metallic Materials
E18 Test Methods for Rockwell Hardness of Metallic Materials
E92 Test Method for Vickers Hardness of Metallic Materials
E140 Hardness Conversion Tables for Metals Relationship Among Brinell Hardness, Vickers Hardness, Rockwell Hardness,
Superficial Hardness, Knoop Hardness, and Scleroscope Hardness
E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods
E384 Test Method for Knoop and Vickers Hardness of Materials Test Method for Knoop and Vickers Hardness of Materials
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
3. Terminology
3.1 Definitions:
3.1.1 UCI method—Ultrasonic Contact Impedance, a hardness testing method developed by Dr. Claus Kleesattel in 1961 based
on the measurement of the frequency shift of a resonating rod caused by the essentially elastic nature of the finite area of contact
between the indenter and the test piece during the penetration.
3.1.2 UCI hardness test—a hardness testing practice using a calibrated instrument by pressing a resonating rod with a defined
indenter, for example, a Vickers diamond, with a fixed force against the surface of the part to be tested.
3.1.3 calibration—determination of the specific values of the significant operating parameters of the UCI instrument by
comparison with values indicated by a standardized workbench hardness tester or by a set of certified reference test pieces.
3.1.4 verification—checking or testing the UCI instrument to ensure conformance with this practice.
3.1.5 surface finish—all references to surface finish in this practice are defined as surface roughness (that is, Ra = average
roughness value).
4. Significance and Use
4.1 The hardness of a material is a defined quantity having many scales and being dependent on the way the test is performed.
1
This practice is under the jurisdiction of ASTM Committee A01 on Steel, Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee A01.06
on Steel Forgings and Billets.
Current edition approved Nov. 1, 2008. Published November 2008. Originally approved in 2005. Last previous edition approved in 2005 as A1038–05. DOI:
10.1520/A1038-08.
Current edition approved May 15, 2010. Published June 2010. Originally approved in 2005. Last previous edition approved in 2008 as A1038 – 08. DOI:
10.1520/A1038-10.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. 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 ----------------------
A1038–10
In order to avoid the creation of a new practice involving a new hardness scale, the UCI method converts into common hardness
values, for example, HV, HRC, etc.
4.2 The UCI hardness test is a superficial determination, only measuring the hardness condition of the surface contacted. The
results generated at a specific location do no
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.