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ASTM A144-04(2019)

(Specification)

Standard Specification for Ferrotungsten

Standard Specification for Ferrotungsten

ABSTRACT
This guide covers standard specification for several grades of ferrotungsten. The material shall conform to the required chemical composition for tungsten, carbon, phosphorus, sulfur, silicon, molybdenum, and aluminum. The material shall also conform to supplementary chemical requirements for manganese, copper, nickel, arsenic, antimony, tin, and bismuth. Various grades of steel shall be available in specified sizes that meet the required size tolerance.
SCOPE
1.1 This specification covers four grades of ferrotungsten.  
1.2 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
Published
Publication Date
31-Oct-2019
ICS
77.120.99 - Other non-ferrous metals and their alloys
Technical Committee
A01 - Steel, Stainless Steel and Related Alloys
Drafting Committee
A01.18 - Castings
Current Stage
Ref Project

Relations

Replaces
ASTM A144-04(2014) - Standard Specification for Ferrotungsten
Effective Date
01-Nov-2019
Refers
ASTM A1025/A1025M-10(2020) - Standard Specification for Ferroalloys and Other Alloying Materials, General Requirements
Effective Date
01-Mar-2020
Refers
ASTM A1025/A1025M-10(2015) - Standard Specification for Ferroalloys and Other Alloying Materials, General Requirements
Effective Date
01-Nov-2015
Refers
ASTM A1025/A1025M-10 - Standard Specification for Ferroalloys, General Requirements
Effective Date
01-Oct-2010

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ASTM A144-04(2019) - Standard Specification for FerrotungstenASTM A144-04(2019) - Standard Specification for Ferrotungsten
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ASTM A144-04(2019) - Standard Specification for Ferrotungsten
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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.
Designation: A144 −04 (Reapproved 2019)
Standard Specification for
Ferrotungsten
This standard is issued under the fixed designation A144; 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 any supplementary requirements that are indicated in the
purchase order. Failure to comply with the general require-
1.1 This specification covers four grades of ferrotungsten.
ments of Specification A1025/A1025M constitutes nonconfor-
1.2 This international standard was developed in accor-
mance with this specification. In case of conflict between the
dance with internationally recognized principles on standard-
requirements of this specification and Specification A1025/
ization established in the Decision on Principles for the
A1025M, this specification shall prevail.
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
4. Chemical Composition
Barriers to Trade (TBT) Committee.
4.1 The material shall conform to the requirements as to
2. Referenced Documents
chemical composition specified in Tables 1 and 2.
2.1 ASTM Standards:
A1025/A1025M Specification for Ferroalloys and Other Al- 4.2 The manufacturer shall furnish an analysis of each
loying Materials, General Requirements
shipment showing the percentage of each element specified in
Table 1.The manufacturer shall supply on request the results of
3. General Conditions for Delivery
an analysis for the elements in Table 2, on a cumulative basis
3.1 Materials furnished to this specification shall conform to
over a period mutually agreed upon between the manufacturer
the requirements of Specification A1025/A1025M, including
and the purchaser.
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
5. Size
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
A01.18 on Castings.
5.1 The various grades are available in the sizes listed in
Current edition approved Nov. 1, 2019. Published November 2019. Originally
Table 3.
approved in 1932. Last previous edition approved in 2014 as A144 – 04 (2014).
DOI: 10.1520/A0144-04R19.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
6. Keywords
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the st
...

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SCOPE
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1.1 This specification covers a gold-rich, age-hardenable alloy in rod, wire, and strip form applicable to electrical contacts.  
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3.1 The Rockwell hardness and Rockwell superficial tests are useful when the test specimens are sufficiently thick (in relation to the indentor load) to ensure that the results are not affected by the flow of metal on the surface of the anvil. On a solid piece the flow of metal on the under surface may be detected by a bulge or marking. On composite pieces where the contact materials are attached to backings of a different material, the thickness limitations imposed for a solid piece shall apply to the contact material portion of such composite pieces.
Note 1: As a matter of information, it may be stated that tests on fine silver showed that on annealed samples having a Rockwell 15T hardness of 27, the readings were not affected on thicknesses 1/16 in. (1.6 mm) or over. On thicknesses of 1/32 in. (0.8 mm) Rockwell 15T scale readings of 72 and higher were not affected.  
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SCOPE
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SCOPE
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Sections  
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SCOPE
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SCOPE
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SCOPE
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SCOPE
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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.  
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