ASTM A144-04

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: A 144 – 04
Standard Specification for
1
Ferrotungsten
This standard is issued under the fixed designation A 144; 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
1.1 This specification covers four grades of ferrotungsten.
2. Referenced Documents
2
2.1 ASTM Standards:
A 1025 Specification for Ferroalloys, General Requirements
3. General Conditions for Delivery
3.1 Materials furnished to this specification shall conform to the requirements of Specification A 1025, including any
supplementary requirements that are indicated in the purchase order. Failure to comply with the general requirements of
Specification A 1025 constitutes nonconformance with this specification. In case of conflict between the requirements of this
specification and Specification A 1025, this specification shall prevail.
4. Chemical Composition
4.1 The material shall conform to the requirements as to chemical composition specified in Tables 1 and 2.
4.2 The manufacturer shall furnish an analysis of each shipment showing the percentage of each element specified in Table 1.
The manufacturer shall supply on request the results of an analysis for the elements in Table 2, on a cumulative basis over a period
mutually agreed upon between the manufacturer and the purchaser.
5. Size
5.1 The various grades are available in the sizes listed in Table 3.
TABLE 3 Size Tolerance
Size Tolerance
1 1
⁄4 in. (6.3 mm) by down 5 % max retained on 6.3 mm ( ⁄4 in.) sieve, 20 %
max under 70 mesh
3 3
⁄8 in. (9.5 mm) by down 5 % max over 9.5 mm ( ⁄8 in.) sieve, 20 % max
under 70 mesh
6. Keywords
6.1 ferroalloy; ferrotungsten
1
This specification is under the jurisdiction ofASTM CommitteeA01 on Steel, Stainless Steel, and RelatedAlloys and is the direct responsibility of SubcommitteeA01.18
on Castings.
Current edition approved Sept. 1, 2004. Published September 2004. Originally approved in 1932. Discontinued in 2000 and reinstated in 2002 asA 144 - 02. Last previous
edition appr
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