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ASTM A801-14

(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)

ABSTRACT
This specification covers wrought iron-cobalt high magnetic saturation alloys, UNS R30005 and UNS K92650, for use in magnetic components requiring high permeability or high magnetic saturation. It covers material supplied in form of forging billets, hot-rolled products cold-finished bars, and strip. The material shall conform to the chemical requirements prescribed in this specification. Chemical analysis shall be performed for carbon, nitrogen, sulfur, and oxygen contents. DC magnetic property,which is the magnetic flux density of the material, shall meet the requirements prescribed in each type of alloys.
SCOPE
1.1 This specification covers two wrought iron-cobalt alloy types for use in magnetic components requiring high permeability at and above 15 kG (1.5 T) or high magnetic saturation. The specific alloy types covered are:
Alloy Type  
UNS  
Nominal Composition  
1  
R30005  
49 % Co, 49 % Fe, 2 % V  
2  
K92650  
27 % Co, 0.50 % Cr, balance Fe
1.1.1 This specification also covers material supplied by a producer 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 (that is, bar, plate, and strip), cold-finished bars, and cold-rolled strip.  
1.2 This specification does not cover parts produced by casting or by powder metallurgical techniques.  
1.3 The values stated in customary (cgs-emu and inch-pound) units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units, which are provided for information only and are not considered 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 and health practices and determine the applicability of regulatory limitations prior to use.

General Information

Status
Historical
Publication Date
30-Apr-2014
ICS
77.080.10 - Irons
Technical Committee
A06 - Magnetic Properties
Drafting Committee
A06.02 - Material Specifications
Current Stage
Ref Project

Relations

Replaced By
ASTM A801/A801M-99 - Standard Specification for Wrought Iron-Cobalt High Magnetic Saturation Alloys UNS R30005 and K92650
Effective Date
10-Jul-1999

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ASTM A801-14 - Standard Specification for Wrought Iron-Cobalt High Magnetic Saturation Alloys (UNS R30005 and K92650)ASTM A801-14 - Standard Specification for Wrought Iron-Cobalt High Magnetic Saturation Alloys (UNS R30005 and K92650)
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REDLINE ASTM A801-14 - Standard Specification for Wrought Iron-Cobalt High Magnetic Saturation Alloys (UNS R30005 and K92650)REDLINE ASTM A801-14 - Standard Specification for Wrought Iron-Cobalt High Magnetic Saturation Alloys (UNS R30005 and K92650)
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REDLINE ASTM A801-14 - 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:A801 −14
Standard Specification for
Wrought Iron-Cobalt High Magnetic Saturation Alloys (UNS
1
R30005 and K92650)
This standard is issued under the fixed designation A801; 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 of Magnetic Materials
A340 Terminology of Symbols and Definitions Relating to
1.1 This specification covers two wrought iron-cobalt alloy
Magnetic Testing
types for use in magnetic components requiring high perme-
A341/A341M Test Method for Direct Current Magnetic
ability at and above 15 kG (1.5 T) or high magnetic saturation.
Properties of Materials Using D-C Permeameters and the
The specific alloy types covered are:
Ballistic Test Methods
Alloy Type UNS Nominal Composition
A596/A596M Test Method for Direct-Current Magnetic
1 R30005 49 % Co, 49 % Fe, 2 % V Properties of Materials Using the Ballistic Method and
2 K92650 27 % Co, 0.50 % Cr, balance Fe
Ring Specimens
1.1.1 This specification also covers material supplied by a A773/A773M Test Method for dc Magnetic Properties of
producer in the form and physical condition suitable for
Materials Using Ring and Permeameter Procedures with
fabrication into parts that will later be given final heat dc Electronic Hysteresigraphs
treatment to achieve the desired magnetic characteristics and,
E1019 Test Methods for Determination of Carbon, Sulfur,
where required, mechanical properties. It covers material Nitrogen, and Oxygen in Steel, Iron, Nickel, and Cobalt
supplied in form of forging billets, hot-rolled products (that is,
Alloys by Various Combustion and Fusion Techniques
bar, plate, and strip), cold-finished bars, and cold-rolled strip.
3. Terminology
1.2 This specification does not cover parts produced by
casting or by powder metallurgical techniques.
3.1 The terms and symbols used in this specification are
defined in Terminology A340.
1.3 The values stated in customary (cgs-emu and inch-
pound) units are to be regarded as standard. The values given
4. Ordering Information
in parentheses are mathematical conversions to SI units, which
are provided for information only and are not considered
4.1 Purchase orders for material under this specification
standard.
shall include the following information:
1.4 This standard does not purport to address all of the
4.1.1 Reference to this specification and year of issue/
safety concerns, if any, associated with its use. It is the revision,
responsibility of the user of this standard to establish appro-
4.1.2 Alloy type,
priate safety and health practices and determine the applica-
4.1.3 Form and conditions (see Section 6),
bility of regulatory limitations prior to use.
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
2.1 ASTM Standards:
4.1.5 Quantity (weight or number of pieces),
A34/A34M Practice for Sampling and Procurement Testing
4.1.6 Magneticpropertyrequirementsifotherthanshownin
this specification (see Section 7),
4.1.7 Certification of analysis or magnetic quality
1
This specification is under the jurisdiction of ASTM Committee A06 on
evaluation, or both, if needed,
Magnetic Properties and is the direct responsibility of Subcommittee A06.02 on
Material Specifications. 4.1.8 Marking and packaging, and
Current edition approved May 1, 2014. Published May 2014. Originally
4.1.9 Exceptions to this specification or special require-
approved in 1999. Last previous edition approved in 2009 as A801–09. DOI:
ments.
10.1520/A0801-14.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
4.2 End Use—When possible, the user should specify
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
whetherthematerialwillbemachined,blankedintoflatpieces,
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. wound into a core, punched into laminations, or photo-etched.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
A801−14
TABLE 1 Chemical Requirements (Weight Percent)
7.4 Test Specimen Heat Treatment—The heat treatment
Alloy 1 Alloy 2 applied to the test specimen shall be in accordance with a
UNS R30005 UNS K92650
procedure mutually agreed upon between the producer and the
Carbon, max 0.025 0.025
user or a procedure recommended by the producer to achieve
Manganese, max 0.15 0.35
the magnetic properties described in this specification (see
Silicon, max 0.15 0.35
Phosphorus, ma
...

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: A801 − 09 A801 − 14
Standard Specification for
Wrought Iron-Cobalt High Magnetic Saturation Alloys (UNS
1
R30005 and K92650)
This standard is issued under the fixed designation A801; 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 specification covers two wrought iron-cobalt alloy types for use in magnetic components requiring high permeability
at and above 15 kG (1.5 T) or high magnetic saturation. The specific alloy types covered are:
Alloy Type UNS Nominal Composition
1 R30005 49 % Co, 49 % Fe, 2 % V
2 K92650 27 % Co, 0.50 % Cr, balance Fe
1.1.1 This specification also covers material supplied by a producer 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 (that is, bar, plate, and strip),
cold-finished bars, and cold-rolled strip.
1.2 This specification does not cover parts produced by casting or by powder metallurgical techniques.
1.3 The values stated in customary (cgs-emu and inch-pound) units are to be regarded as standard. The values given in
parentheses are mathematical conversions to SI units, which are provided for information only and are not considered 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 and health practices and determine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
2
2.1 ASTM Standards:
A34/A34M Practice for Sampling and Procurement Testing of Magnetic Materials
A340 Terminology of Symbols and Definitions Relating to Magnetic Testing
A341/A341M Test Method for Direct Current Magnetic Properties of Materials Using D-C Permeameters and the Ballistic Test
Methods
A596/A596M Test Method for Direct-Current Magnetic Properties of Materials Using the Ballistic Method and Ring Specimens
A773/A773M Test Method for dc Magnetic Properties of Materials Using Ring and Permeameter Procedures with dc Electronic
Hysteresigraphs
E1019 Test Methods for Determination of Carbon, Sulfur, Nitrogen, and Oxygen in Steel, Iron, Nickel, and Cobalt Alloys by
Various Combustion and Fusion Techniques
3. Terminology
3.1 The terms and symbols used in this specification are defined in Terminology A340.
4. Ordering Information
4.1 Purchase orders for material under this specification shall include the following information:
4.1.1 Reference to this specification and year of issue/revision,
1
This specification is under the jurisdiction of ASTM Committee A06 on Magnetic Properties and is the direct responsibility of Subcommittee A06.02 on Material
Specifications.
Current edition approved Nov. 1, 2009May 1, 2014. Published December 2009May 2014. Originally approved in 1999. Last previous edition approved in 20042009 as
A801–04.–09. DOI: 10.1520/A0801-09.10.1520/A0801-14.
2
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 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 ----------------------
A801 − 14
TABLE 1 Chemical Requirements (Weight Percent)
Alloy 1 Alloy 2
UNS R30005 UNS K92650
Carbon, max 0.025 0.025
Manganese, max 0.15 0.35
Silicon, max 0.15 0.35
Phosphorus, max 0.015 0.015
Sulfur, max 0.010 0.015
Chromium, max 0.15 0.75
Nickel, max 0.25 0.75
Cobalt 47.50 to 49.50 26.50 to 28.50
Vanadium 1.75 to 2.10 0.35 max
Iron remainder remainder
4.1.2 Alloy type,
4.1.3 Form and conditions (see Section 6),
4.1.4 Dimensions and tolerances, (tolerances other than those in Section 9 must be stated as mutually agreed upon between the
producer and the user),
4.1.5 Quantity (weight or number of pieces),
4.1.6 Magnetic property requirements if other than shown in this specification (see Section 7),
4.1.7 Certification of analysis or magnetic quality evaluation, or both, if needed,
4.1.8 Marking and packaging, and
4.1.
...

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ABSTRACT
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This specification covers wrought iron-cobalt high magnetic saturation alloys, UNS R30005 (49 % Co, 49% Fe, 2%V) and UNS K92650 (27 % Co, balance Fe), for use in magnetic components. The specification covers alloy supplied in form of forging billets, hot-rolled bar, hot rolled plate, cold-finished bar, and cold rolled strip. It does not cover alloy produced either by casting or by powder metallurgical techniques. The material shall conform to the chemical requirements prescribed in this specification. Magnetic property requirements and dimensional tolerances are listed. Appendices giving useful information on the heat treatment of these alloys and typical physical properties are included.
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This specification covers austenitic gray iron castings that are used primarily for their resistance to heat, corrosion, and wear. The types of castings covered here are: Type 1, Type 1b, Type 2, Type 2b, Type 3, Type 4, Type 5, and Type 6. The materials shall be manufactured by melting in any furnace that produces castings which includes cupolas, air furnaces, electric furnaces, crucible furnaces, and so forth. Heat and product analyses shall be performed wherein specimens shall conform to required chemical composition of carbon, silicon, manganese, nickel, copper, chromium, sulfur, and molybdenum. The materials shall undergo a nonmagnetic test which is based on the material's attraction to a small steel horseshoe-type magnet and a magnetic permeability test in the event that nonmagnetic castings are specified. Tension tests shall be performed wherein specimens shall conform to required tensile strength and Brinell hardness.
SCOPE
1.1 This specification covers austenitic gray iron castings that are used primarily for their resistance to heat, corrosion, and wear. Austenitic gray iron is characterized by uniformly distributed graphite flakes, some carbides, and the presence of sufficient alloy content to produce an austenitic structure.  
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
1.3 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.

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ASTM
ASTM D3872-05(2019)(Test Method)
Standard Test Method for Ferrous Iron in Iron Oxides

SIGNIFICANCE AND USE
3.1 This test method may be used for production quality control or specification acceptance.
SCOPE
1.1 This test method covers the quantitative determination of ferrous oxide (FeO) by oxidation of ferrous iron (Fe++) in an acid solution to the ferric state (Fe+++) and titration with potassium dichromate using diphenylamine as the indicator.  
1.2 This test method is applicable to synthetic black iron oxide, natural black iron oxide, magnetite or brown iron oxide where part of the iron content is present in the ferrous state (Note 1). It is applicable to iron oxides where the ferrous iron content ranges from 50 to 0.20 %.  
Note 1: Natural iron oxides and magnetite may contain traces of metallic iron that will be combined with and analyzed as FeO.  
1.3 This standard does not purport to address the safety concerns if any, problems 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.  
1.4 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.

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ASTM
ASTM A644-17(Terminology)
Standard Terminology Relating to Iron Castings
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  • Standard
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