ASTM A483-64(2000)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: A 483 – 64 (Reapproved 2000)
Standard Specification for
Silicomanganese
This standard is issued under the fixed designation A 483; 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.
A
TABLE 1 Chemical Requirements
1. Scope
Element Composition, %
1.1 This specification covers three grades of silicomanga-
Grade A Grade B Grade C
nese designated A, B, and C.
B
Manganese 65.0–68.0 65.0–68.0 65.0–68.0
B
2. Referenced Documents
Silicon 18.5–21.0 16.0–18.5 12.5–16.0
Carbon, max 1.5 2.0 3.0
2.1 ASTM Standards:
Phosphorus, max 0.20 0.20 0.20
E 11 Specification for Wire-Cloth Sieves for Testing Pur- Sulfur, max 0.04 0.04 0.04
A
poses
For 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
E 29 Practice for Using Significant Digits in Test Data to
used in expressing the limiting value, in accordance with the rounding method of
Determine Conformance With Specifications
Recommended Practice E 29.
B
E 31 Methods for Chemical Analysis of Ferroalloys
For purposes of determining the manganese and silicon content of any
shipment, both elements shall be reported to the nearest 0.01 %, applying the
E 32 Practices for Sampling Ferroalloys and Steel Additives
same rounding procedure as prescribed in Footnote A.
for Determination of Chemical Composition
3. Ordering Information
an analysis for these elements on a cumulative basis over a
3.1 Orders for material under this specification shall include
period mutually agreed upon by the manufacturer and the
the following information:
purchaser.
3.1.1 Quantity,
5. Size
3.1.2 Name of material,
3.1.3 ASTM designation and year of issue,
5.1 The various grades are available in sizes as listed in
3.1.4 Grade,
Table 3.
3.1.5 Size, and
5.2 The sizes listed in Table 3 are typical as shipped from
3.1.6 Requirements for packaging, analysis reports, etc. as
the manufacturer’s plant. These alloys exhibit varying degrees
appropriate.
of friability; therefore, some attrition may be expected in
3.2 The customary basis of payment for silicomanganese is
transit, storage, and handling.
per pound of ferroalloy, rather than per pound of contained
6. Sampling
manganese or silicon.
6.1 The material shall be sampled in accordance with
4. Chemical Composition
Practices E 32.
4.1 The various grades shall conform to the requirements as
6.2 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 manganese, silicon, and carbon content
and, when required, such of the other elements as are specified
A
TABLE 2 Supplementary Chemical Requirements
in Table 1.
Composition, max, % All Grades
4.3 The values shown in Table 2 are expected maximums.
Upon request of the purchaser, the manufacturer shall furnish Arsenic 0.10
Tin 0.010
Lead 0.030
Chromium 0.50
Nickel 0.20
This specification is under the jurisdiction of ASTM Committee A-1 on Steel,
Molybdenum 0.10
Stainless Steel, and Related Alloys and is the direct responsibility of Subcommittee
A01.18 on Castings. A
For purposes of deter
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