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ASTM A801/A801M-99

(Specification)

Standard Specification for Wrought Iron-Cobalt High Magnetic Saturation Alloys UNS R30005 and K92650

Standard Specification for Wrought Iron-Cobalt High Magnetic Saturation Alloys UNS R30005 and K92650

SCOPE
1.1 This specification covers two iron-cobalt alloy types currently manufactured and supplied commercially for use in magnetic cores requiring high permeability at and above 15 kG (1.5 T) under d-c and certain a-c conditions. The specific alloy types covered are:  Alloy Type Nominal Composition 1 49 % Co, 49 % Fe, 2 % V 2 27 % Co, 0.50 % Cr, balance Fe
This specification also covers materials supplied by a pro ducer or converter in the form and physical condition suitable for fabrication into parts that will later be given final heat treatment to achieve the desired magnetic characteristics and where required, mechanical properties. It covers material supplied in form of forging billets, hot-rolled products, cold-finished bars, and strip. 1.2 The values stated in either customary units (cgs-emu and inch-pound) or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents: therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the specification.

General Information

Status
Historical
Publication Date
09-Jul-1999
ICS
77.080.10 - Irons
Technical Committee
A06 - Magnetic Properties
Drafting Committee
A06.02 - Material Specifications
Current Stage
Ref Project

Relations

Replaces
ASTM A801-14 - Standard Specification for Wrought Iron-Cobalt High Magnetic Saturation Alloys (UNS R30005 and K92650)
Effective Date
10-Jul-1999

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ASTM A801/A801M-99 - Standard Specification for Wrought Iron-Cobalt High Magnetic Saturation Alloys UNS R30005 and K92650ASTM A801/A801M-99 - Standard Specification for Wrought Iron-Cobalt High Magnetic Saturation Alloys UNS R30005 and K92650
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ASTM A801/A801M-99 - Standard Specification for Wrought Iron-Cobalt High Magnetic Saturation Alloys UNS R30005 and K92650
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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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: A 801/A 801M – 99
Standard Specification for
Wrought Iron-Cobalt High Magnetic Saturation Alloys UNS
1
R30005 and K92650
This standard is issued under the fixed designationA 801/A 801M; 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 A 341 Test Method for Direct Current Magnetic Properties
of Materials Using D-C Permeameters and the Ballistic
1.1 This specification covers two wrought iron-cobalt alloy
2
Test Methods
types currently manufactured and supplied commercially for
A 596 Test Method for Direct-Current Magnetic Properties
use in magnetic components requiring high permeability at and
of Materials Using the Ballistic Method and Ring Speci-
above 15 kG [1.5 T] or high magnetic saturation. The specific
2
mens
alloy types covered are:
A 773 Test Method for D-C Magnetic Properties of Mate-
Alloy Type UNS Nominal Composition
rials Using Ring and Permeameter Procedures with D-C
2
1 R30005 49 % Co, 49 % Fe, 2 % V
Electronic Hysteresigraphs
2 K92650 27 % Co, 0.50 % Cr, balance Fe
E 1019 Methods for Determination of Carbon, Sulfur, Ni-
1.1.1 This specification also covers material supplied by a
trogen,andOxygeninSteelandinIron,Nickel,andCobalt
3
producer or converter in the form and physical condition Alloys
suitable for fabrication into parts that will later be given final
3. Terminology
heat treatment to achieve the desired magnetic characteristics
and, where required, mechanical properties. It covers material 3.1 The terms and symbols used in this specification are
supplied in form of forging billets, hot-rolled products, cold- defined in Terminology A 340.
finished bars, and strip.
4. Ordering Information
1.2 This specification does not cover parts produced by
casting or by powder metallurgical techniques. 4.1 Purchase orders for material under this specification
1.3 The values stated in either customary (cgs-emu and shall include such of the following information to adequately
describe the desired product.
inch-pound) units or SI units are to be regarded separately as
standard. Within the text, the SI units are shown in brackets. 4.1.1 Reference to this specification and year of issue/
revision,
The values stated in each system are not exact equivalents;
therefore,eachsystemshallbeusedindependentlyoftheother. 4.1.2 Alloy type,
4.1.3 Form and conditions (see Section 6),
Combining values from the two systems may result in noncon-
formance with this specification. 4.1.4 Dimensions and tolerances, (tolerances other than
those in Section 9 must be stated as mutually agreed upon
2. Referenced Documents
between the producer and the user),
2.1 ASTM Standards: 4.1.5 Quantity (weight or number of pieces),
A 34/A 34M Practice for Sampling and Procurement Test- 4.1.6 Magneticpropertyrequirementsifotherthanshownin
2
ing of Magnetic Materials this specification (see Section 7),
A 340 Terminology of Symbols and Definitions Relating to 4.1.7 Certification of analysis or magnetic quality evalua-
2
Magnetic Testing tion, or both, if needed,
4.1.8 Marking and packaging, and
4.1.9 Exceptions to this specification or special require-
1
This specification is under the jurisdiction of ASTM Committee A06 on
ments.
Magnetic Properties and is the direct responsibility of Subcommittee A06.02 on
Material Specifications.
Current edition approved July 10, 1999. Published September 1999.
2 3
Annual Book of ASTM Standards, Vol 03.04. Annual Book of ASTM Standards, Vol 03.06.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
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.
A 801/A 801M – 99
3 3
4.2 End Use—Whenever practicable, the user should
Alloy Type UNS Density g/cm [kg/m ]
specify whether the material will be machined, blanked into
1 R30005 8.12 [8120]
flat pieces, wound into a core, punched into laminations, or
2 K92650 7.95 [7950]
photo-etched.
7.4 Test Specimen Heat Treatment—The heat treatment
applied to the test specimen shall be in accordance with a
5. Chemical Composition
procedure mutually agreed upon between the producer and the
5.1 The material shall conform to the requirements pre-
user or a procedure recommended by the producer to achieve
scribed in Table 1. Since magnetic and possibly mechanical
the magnetic properties described in this specification (see
properties are of primary importance, analysis variations are
Appendix X1).
permitted subject to mutual agreement b
...

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