ASTM A34/A34M-06(2018)

Standard Practice for Sampling and Procurement Testing of Magnetic Materials

SIGNIFICANCE AND USE
4.1 This practice defines test lots and describes the selection and preparation of test specimens used in the determination of magnetic properties of various materials.  
4.2 A method of calculating the density of iron-base electrical steels is given and a table of assumed densities for magnetic testing of commercial soft magnetic alloys is provided.
SCOPE
1.1 This practice covers sampling procedures and test practices for determination of various magnetic properties of both soft and hard magnetic materials.  
1.2 This practice may be used either in conjunction with, or independent of, the standard test methods and materials specifications under the jurisdiction of ASTM Committee A06. In the former situation, the sampling and testing procedures listed herein shall not supersede those found in the individual test methods and materials specifications. In the latter situation, the sampling and testing procedures listed herein shall strictly apply.  
1.3 The values and equations stated in customary (cgs-emu and inch-pound) or SI units are to be regarded separately as standard. Within this standard, SI units are shown in brackets except for the sections concerning calculations where there are separate sections for the respective unit systems. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with this standard.  
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Historical
• Publication Date: 30-Apr-2018
• ICS: 29.030 - Magnetic materials
• Technical Committee: A06 - Magnetic Properties
• Drafting Committee: A06.01 - Test Methods

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: A34/A34M − 06 (Reapproved 2018)
Standard Practice for
1
Sampling and Procurement Testing of Magnetic Materials
This standard is issued under the fixed designation A34/A34M; 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
1.1 This practice covers sampling procedures and test prac- 2.1 ASTM Standards:
tices for determination of various magnetic properties of both A340 Terminology of Symbols and Definitions Relating to
soft and hard magnetic materials. Magnetic Testing
1.2 This practice may be used either in conjunction with, or
3. Terminology
independent of, the standard test methods and materials speci-
3.1 Definitions:
fications under the jurisdiction of ASTM Committee A06. In
3.1.1 For definitions of terms relating to magnetic testing,
the former situation, the sampling and testing procedures listed
reference shall be made to Terminology A340.
herein shall not supersede those found in the individual test
methods and materials specifications. In the latter situation, the
4. Significance and Use
sampling and testing procedures listed herein shall strictly
4.1 This practice defines test lots and describes the selection
apply.
and preparation of test specimens used in the determination of
1.3 The values and equations stated in customary (cgs-emu
magnetic properties of various materials.
and inch-pound) or SI units are to be regarded separately as
4.2 A method of calculating the density of iron-base elec-
standard. Within this standard, SI units are shown in brackets
trical steels is given and a table of assumed densities for
except for the sections concerning calculations where there are
magnetic testing of commercial soft magnetic alloys is pro-
separate sections for the respective unit systems. The values
vided.
stated in each system may not be exact equivalents; therefore,
each system shall be used independently of the other. Combin-
5. Test Lots
ing values from the two systems may result in nonconformance
5.1 Wrought, Flat-Rolled, or Long Products:
with this standard.
5.1.1 Atest lot of wrought, flat-rolled, or long products shall
1.4 This standard does not purport to address all of the
consist of not more than 50 000 lb [23 000 kg] of material.
safety concerns, if any, associated with its use. It is the
5.1.2 A test lot may be composed of coils or cut lengths. A
responsibility of the user of this standard to establish appro-
test lot of coil product may consist of one or more coils having
priate safety, health, and environmental practices and deter-
essentially the same treatment and composition.
mine the applicability of regulatory limitations prior to use.
1.5 This international standard was developed in accor- 5.2 Amorphous Strip and Wire:
5.2.1 A test lot shall consist of a continuously cast strip or
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the wire in one coil without breaks. In practice this may represent
quantities up to 2200 lb [1000 kg].
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
5.3 Powder Metallurgically Produced Parts:
Barriers to Trade (TBT) Committee.
5.3.1 A test lot shall consist of parts of the same geometry
and dimensions, made from powder of the same composition,
1
This practice is under the jurisdiction of ASTM Committee A06 on Magnetic
Properties and is the direct responsibility of Subcommittee A06.01 on Test
2
Methods. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved May 1, 2018. Published June 2018. Originally contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
approved in 1911. Last previous edition approved in 2012 as A34/A34M – 06 Standards volume information, refer to the standard’s Document Summary page on
(2012). DOI: 10.1520/A0034_A0034M-06R18. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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A34/A34M − 06 (2018)
molded and sintered under the same conditions, which have 6.5.1 Sampling shall consist of one sample per test lot
been submitted for inspection at one time. unless otherwise specified in the appropriate ASTM specifica-
tion or by mutual agreement between the producer and
5.4 Cast Parts:
purchaser.
5.4.1 A test lot shall consist of parts of the same geometry
and dimensions, made from the same casting heat, which have 6.6 Cast Parts:
6.6.1 Sampling shall consist o
...

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: A34/A34M − 06 (Reapproved 2012) A34/A34M − 06 (Reapproved 2018)
Standard Practice for
1
Sampling and Procurement Testing of Magnetic Materials
This standard is issued under the fixed designation A34/A34M; 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 sampling procedures and test practices for determination of various magnetic properties of both soft
and hard magnetic materials.
1.2 This practice may be used either in conjunction with, or independent of, the standard test methods and materials
specifications under the jurisdiction of ASTM Committee A06. In the former situation, the sampling and testing procedures listed
herein shall not supersede those found in the individual test methods and materials specifications. In the latter situation, the
sampling and testing procedures listed herein shall strictly apply.
1.3 The values and equations stated in customary (cgs-emu and inch-pound) or SI units are to be regarded separately as
standard. Within this standard, SI units are shown in brackets except for the sections concerning calculations where there are
separate sections for the respective unit systems. The values stated in each system may not be exact equivalents; therefore, each
system shall be used independently of the other. Combining values from the two systems may result in nonconformance with this
standard.
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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2
2.1 ASTM Standards:
A340 Terminology of Symbols and Definitions Relating to Magnetic Testing
3. Terminology
3.1 Definitions:
3.1.1 For definitions of terms relating to magnetic testing, reference shall be made to Terminology A340.
4. Significance and Use
4.1 This practice defines test lots and describes the selection and preparation of test specimens used in the determination of
magnetic properties of various materials.
4.2 A method of calculating the density of iron-base electrical steels is given and a table of assumed densities for magnetic
testing of commercial soft magnetic alloys is provided.
5. Test Lots
5.1 Wrought, Flat-Rolled, or Long Products:
5.1.1 A test lot of wrought, flat-rolled, or long products shall consist of not more than 50 000 lb [23 000 kg] of material.
5.1.2 A test lot may be composed of coils or cut lengths. A test lot of coil product may consist of one or more coils having
essentially the same treatment and composition.
1
This practice is under the jurisdiction of ASTM Committee A06 on Magnetic Properties and is the direct responsibility of Subcommittee A06.01 on Test Methods.
Current edition approved Nov. 1, 2012May 1, 2018. Published November 2012June 2018. Originally approved in 1911. Last previous edition approved in 20062012 as
A34/A34M – 06.A34/A34M – 06 (2012). DOI: 10.1520/A0034_A0034M-06R12.10.1520/A0034_A0034M-06R18.
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.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
A34/A34M − 06 (2018)
5.2 Amorphous Strip and Wire:
5.2.1 A test lot shall consist of a continuously cast strip or wire in one coil without breaks. In practice this may represent
quantities up to 2200 lb [1000 kg].
5.3 Powder Metallurgically Produced Parts:
5.3.1 A test lot shall consist of parts of the same geometry and dimensions, made from powder of the same composition, molded
and sintered under the same conditions, which have been submitted for inspection a
...