ASTM A144-04(2019)

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

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

Overview

ASTM A144-04(2019): Standard Specification for Ferrotungsten establishes requirements for four grades of ferrotungsten, a vital ferroalloy used in steelmaking and alloy production. Developed by ASTM International, this standard ensures material quality by specifying chemical composition limits and size tolerances, supporting consistency and reliability for producers, suppliers, and end-users worldwide. By conforming to internationally recognized principles set forth by the World Trade Organization (WTO) Technical Barriers to Trade (TBT) Committee, ASTM A144-04(2019) promotes global harmonization in ferroalloy specifications.

Key Topics

• Grades Covered:
  The specification addresses four distinct grades of ferrotungsten, each defined by its allowed range of tungsten content and maximum tolerances for elements such as carbon, phosphorus, sulfur, silicon, molybdenum, and aluminum.
• Chemical Requirements:
  Ferrotungsten supplied under this standard must meet strict chemical composition requirements. Supplementary requirements cover trace elements such as manganese, copper, nickel, arsenic, antimony, tin, and bismuth, based on mutual agreement between supplier and purchaser.
• Size Tolerances:
  The standard defines acceptable particle sizes and sieving tolerances, ensuring consistency in material supplied according to industry requirements.
• Documentation and Analysis:
  Manufacturers are required to provide chemical analyses for major specified elements with every shipment. Results for minor and supplementary elements may be supplied upon request or by prior agreement.

Applications

ASTM A144-04(2019) is essential for industries using ferrotungsten as an alloying agent, particularly in the production of specialty steels and superalloys. Key applications include:

• Steel Manufacturing:
  Ferrotungsten enhances performance characteristics such as strength, hardness, and resistance to wear and corrosion in high-performance steel products.
• Superalloys Production:
  The high tungsten content of ferrotungsten makes it suitable for advanced alloy compositions used in demanding environments, like aerospace and defense.
• Casting Processes:
  The consistent quality ensured by this standard supports reliable and repeatable results in steel castings and fabricated alloy components.

Adopting ASTM A144-04(2019) minimizes variation in critical material properties, improves traceability, and supports international trade by adhering to globally recognized practices.

Related Standards

Organizations often reference or use ASTM A144-04(2019) in conjunction with other related standards, including:

• ASTM A1025/A1025M - Specification for Ferroalloys and Other Alloying Materials, General Requirements
  This standard outlines the general delivery and testing requirements for ferroalloys, serving as a foundational document referenced by ASTM A144-04(2019).
• Other ASTM Ferroalloy Specifications
  Standards for alloys such as ferromolybdenum, ferrosilicon, and ferromanganese may be relevant depending on application needs within the steel industry.
• ISO and Regional Standards for Ferroalloys
  When engaging in international trade or seeking equivalency, users may compare ASTM A144-04(2019) to ISO or other regional standards for consistency and compliance.

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By adhering to ASTM A144-04(2019), manufacturers, suppliers, and end-users ensure the quality and performance of ferrotungsten products, supporting efficient production and global commerce in specialty metallurgical markets.

Standards Content (Sample)

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 [e-mail]. For Annual Book of ASTM
Standards volume information, refer to the st
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