ASTM A144-02

Specification for Ferrotungsten

SCOPE
1.1 This specification covers four grades of ferrotungsten.

General Information

• Status: Historical
• Publication Date: 09-Mar-2002
• 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 A144-73(1990)e1 - Specification for Ferrotungsten
• Effective Date: 10-Mar-2002
• Replaced By: ASTM A144-04 - Specification for Ferrotungsten
• Effective Date: 01-Sep-2004

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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 144 – 02
Standard Specification for
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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 basis over a period mutually agreed upon between the manu-
facturer and the purchaser.
1.1 This specification covers four grades of ferrotungsten.
5. Chemical Analysis
2. Referenced Documents
5.1 The chemical analysis of the material shall be made in
2.1 ASTM Standards:
accordance with the procedure for ferrotungsten as described in
E 29 Practice for Using Significant Digits in Test Data to
2 Methods E 31 or alternative methods which will yield equiva-
Determine Conformance with Specifications
3
lent results.
E 31 Methods for Chemical Analysis of Ferroalloys
5.2 If alternative methods of analysis are used, in case of
E 32 Practices for Sampling Ferroalloys and Steel Additives
3
discrepancy, Methods E 31 shall be used for referee.
for Determination of Chemical Composition
5.3 Where no method is given in Methods E 31 for the
3. Ordering Information
analysis for a particular element, the analysis shall be made in
accordance with a procedure agreed upon between the manu-
3.1 Orders for material under this specification shall include
facturer and the purchaser.
the following information:
3.1.1 Quantity,
6. Size
3.1.2 Name of material,
6.1 The various grades are available in the sizes listed in
3.1.3 ASTM designation and year of issue,
Table 3.
3.1.4 Grade,
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6.2 The ferrotungsten is available in various sizes such as ⁄4
3.1.5 Sizing, and
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by down (5 % maximum over ⁄4 in., 20 % maximum under 70
3.1.6 Requirements for packaging, analysis reports, and so
3 3
mesh), or ⁄8 by down (5 % maximum over ⁄8 in., 20 %
forth, as appropriate.
maximum under 70 mesh). The size shall be specified on the
3.2 Although ferrotungsten is ordered by total net weight,
order.
the customary basis of payment is per pound of contained
tungsten.
7. Sampling
4. Chemical Composition 7.1 The material shall be sampled in accordance with
Practices E 32.
4.1 The various grades shall conform to the requirements as
7.2 Other methods of sampling mutually agreed upon by the
to chemical composition specified in Table 1 and Table 2.
manufacturer and the purchaser may be used; however, in case
4.2 The manufacturer shall furnish an analysis of each
of discrepancy, Practices E 32 shall be used for referee.
shipment showing the elements specified in Table 1.
4.3 The values shown in Table 2 are expected maximums.
8. Inspection
Upon the request of the purchaser, the manufacturer shall
8.1 The manufacturer shall afford the inspector representing
furnish an analysis for any of these elements on a cumulative
the purchaser all reasonable facilities, without charge, to satisfy
him that the material is being furnished in accordance with this
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This specification is under the jurisdiction of ASTM Committee A01 on Steel, specification.
Stainless Steel, and Related Alloys and is the direct responsibility of Subcommittee
A01.18 on Castings.
9. Rejection
Current edition approved Mar. 10, 2002. Published May 2002. Originally
9.1 Any claims or rejections shall be made to the manufac-
published as A 144 – 32 T. Discontinued 2000 and reinstated as A 144 - 02.
2
Annual Book of ASTM Standards, Vol 14.02. turer within 45 days from receipt of material by the purchaser.
3
Annual Book of ASTM Standards, Vol 03.05.
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A 144–02
A,B
TABLE 1 Chemical Requirements
Primary Compositions, max, %, Unless Otherwise Shown
Grade
Tungsten Carbon Phosphorus Sulfur Silicon Molybdenum Aluminum
A 85.0–95.0 0.050 0.010 0.020 0.10 0.20 0.10
B 75.0–85.0 0.10 0.020 0.020 0.50 0.35 0.10
C 75.0–85.0 0.60 0.060 0.050 1.0 1.0 .
D 75.0–85.0 0.60 0.060 0.050 1.0 3.0 .
A
For the purposes of determining conformance with this specification, the reported analysis shall be rounded to the nearest unit in the last right-hand place of figures
used in expressing the limiting value, in accordance with the rounding method of Practice E 29.
B
For purposes of determining the tungsten content of any shipment, tungsten shall be reported to the nearest 0.1 %, applying the same rounding procedureas
prescribed in Footnote A.
A,B
TABLE 2 Supplementary Chemical Requirements
Manganese Copper Nickel Arsenic Antimony Tin Bismuth Total: Arsenic, Total: Arsenic
Antimony, Tin Antimony, Tin,
Bismuth
A 0.10 0.50 0.05 0.010 0.010 0.010 0.010 . 0.040
B 0.30 0.07 0.05 0.020 0.020 0
...