ASTM A482-93(2004)
(Specification)Standard Specification for Ferrochrome-Silicon
Standard Specification for Ferrochrome-Silicon
SCOPE
1.1 This specification covers two grades of ferrochromesilicon designated A and B.
General Information
Relations
Standards Content (Sample)
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Designation: A 482 – 93 (Reapproved 2004)
Standard Specification for
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Ferrochrome-Silicon
This standard is issued under the fixed designation A 482; 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.
TABLE 1 Chemical Requirements
1. Scope
Element Composition, %
1.1 This specification covers two grades of ferrochrome-
Grade A Grade B
silicon designated A and B.
Chromium 34.0–38.0 38.0–42.0
2. Referenced Documents
Carbon, max 0.060 0.050
Silicon 38.0–42.0 41.0–45.0
2
2.1 ASTM Standards:
Sulfur, max 0.030 0.030
E 11 Specification for Wire Cloth and Sieves for Testing Phosphorus, max 0.030 0.030
Purposes
E 29 Practice for Using Significant Digits in Test Data to
Determine Conformance with Specifications
4.3 The values shown in Table 2 are expected maximums.
3
E 31 Methods for Chemical Analysis of Ferroalloys
Upon request of the purchaser, the manufacturer shall furnish
E 32 PracticesforSamplingFerroalloysandSteelAdditives
an analysis for any of these elements on a cumulative basis
for Determination of Chemical Composition
over a period mutually agreed upon between the manufacturer
E 364 Test Methods for ChemicalAnalysis of Ferrochrome-
and the purchaser.
Silicon
5. Size
3. Ordering Information
5.1 The various grades are available in sizes as listed in
3.1 Orders for material under this specification shall include
Table 3.
the following information:
5.2 The sizes listed in Table 3 are typical as shipped from
3.1.1 Quantity,
the manufacturer’s plant. These alloys exhibit varying degrees
3.1.2 Name of material,
of friability; therefore, some attrition may be expected in
3.1.3 ASTM designation,
3.1.4 Grade,
A
TABLE 2 Supplementary Chemical Requirements
3.1.5 Size, and
Composition, max, percent
3.1.6 Requirements for packaging, analysis reports, etc., as
Element Ferrochrome-Silicon (Grades A
appropriate.
and B)
3.2 The basis of payment for ferrochrome-silicon may be
Nitrogen 0.050
per unit weight of alloy or per pound of contained chrome and Manganese 0.75
Nickel 0.50
silicon.
Vanadium 0.50
Copper 0.050
4. Chemical Composition
Molybdenum 0.050
Columbium 0.050
4.1 The various grades shall conform to the requirements as
Tantalum 0.050
to chemical composition specified in Table 1 and Table 2.
Cobalt 0.10
4.2 The manufacturer shall furnish an analysis of each Aluminum 0.50
Titanium 0.50
shipment showing the elements specified in Table 1.
Zirconium 0.050
Arsenic 0.005
Lead 0.005
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This specification is under the jurisdiction of ASTM Committee A01 on Steel, Tin 0.005
Stainless Steel, and RelatedAlloys and is the direct responsibility of Subcommittee Zinc 0.005
Boron 0.005
A01.18 on Castings.
Antimony 0.005
Current edition approved Oct. 1, 2004. Published October 2004. Originally
Silver 0.005
approved in 1963. Last previous edition approved in 2000 as A 482 – 93 (2000).
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Bismuth 0.005
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
A
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
For purposes of determining conformance with this specification, the reported
Standards volume information, refer to the standard’s Document Summary page on
analysis shall be rounded to the nearest unit in the right-hand place of figures used
the ASTM website.
in expressing the limiting value, in accordance with the rounding method of
3
Withdrawn. Practice E 29.
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A 482 – 93 (2004)
TABLE 3 Standard Sizes and Tolerances
A
Product Standard Sizes Tolerances
Ferrochrome-Silicon 75 lb by down 90 lb lump, max
75 lb by 1 in. (25.4 mm) 90 lb lump, max 10% max, passing 1-in. (25.0-mm) sieve
75 lb by 2 in. (50.8 mm) 90 lb lump, max 10% max, passing 2-in. (50-mm) sieve
40 lb by down 50 lb lump, max
25 lb by down 30 lb lump, max
4 in. (101.6 mm) by down 10% max, retained on 4-in. (100-mm) sieve
3 in. (76.2 mm) by down 10% max, retained on 3 in. (75-mm) sieve
1 1
3by ⁄2 in. (76.2 by 12.7 mm) 10% max, retained on 3-in. (75-mm) sieve 10% max, passing ⁄2 in. (12.5 mm) sieve
2 in. (50.8 mm) by down 10% max, retained on 2-in. (50-mm) sieve
1 1
2by ⁄4 in. (50.8 by 6.35 mm) 10% max, retained on 2-in. (50-mm) sieve 10% max, passing ⁄4 in. (6.3-mm) sieve
3 3
⁄4 in. (19.05 mm) by down 10% max, retained on ⁄4 in. (19.0-mm) sieve
A
Specifications of sieve sizes used to define tolerances herein are as listed in Specification E 11.
transit, storage, and handling. A quantitative test is not avail- 7.3 Wherein no method is given in Methods E 31 or Test
able f
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