ASTM A482-93(2000)

Standard Specification for Ferrochrome-Silicon

SCOPE
1.1 This specification covers two grades of ferrochromesilicon designated A and B.

General Information

• Status: Historical
• Publication Date: 09-Mar-2000
• ICS: 77.100 - Ferroalloys
• Technical Committee: A01 - Steel, Stainless Steel and Related Alloys
• Drafting Committee: A01.18 - Castings

Relations

• Replaced By: ASTM A482-93(2004) - Standard Specification for Ferrochrome-Silicon
• Effective Date: 01-Oct-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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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 482 – 93 (Reapproved 2000)
Standard Specification for
1
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
2.1 ASTM Standards:
Sulfur, max 0.030 0.030
E 11 Specification for Wire-Cloth Sieves for Testing Pur- Phosphorus, max 0.030 0.030
2
poses
E 29 Practice for Using Significant Digits in Test Data to
2
4.3 The values shown in Table 2 are expected maximums.
Determine Conformance with Specifications
3
Upon request of the purchaser, the manufacturer shall furnish
E 31 Methods for Chemical Analysis of Ferroalloys
an analysis for any of these elements on a cumulative basis
E 32 Practices for Sampling Ferroalloys and Steel Additives
3
over a period mutually agreed upon between the manufacturer
for Determination of Chemical Composition
and the purchaser.
E 364 Test Methods for Chemical Analysis of Ferrochrome-
4
Silicon
5. Size
3. Ordering Information
5.1 The various grades are available in sizes as listed in
Table 3.
3.1 Orders for material under this specification shall include
5.2 The sizes listed in Table 3 are typical as shipped from
the following information:
the manufacturer’s plant. These alloys exhibit varying degrees
3.1.1 Quantity,
3.1.2 Name of material,
A
TABLE 2 Supplementary Chemical Requirements
3.1.3 ASTM designation,
3.1.4 Grade, Composition, max, percent
Element Ferrochrome-Silicon (Grades A
3.1.5 Size, and
and B)
3.1.6 Requirements for packaging, analysis reports, etc., as
Nitrogen 0.050
appropriate.
Manganese 0.75
3.2 The basis of payment for ferrochrome-silicon may be
Nickel 0.50
Vanadium 0.50
per unit weight of alloy or per pound of contained chrome and
Copper 0.050
silicon.
Molybdenum 0.050
Columbium 0.050
4. Chemical Composition
Tantalum 0.050
Cobalt 0.10
4.1 The various grades shall conform to the requirements as
Aluminum 0.50
to chemical composition specified in Table 1 and Table 2.
Titanium 0.50
Zirconium 0.050
4.2 The manufacturer shall furnish an analysis of each
Arsenic 0.005
shipment showing the elements specified in Table 1.
Lead 0.005
Tin 0.005
Zinc 0.005
1
Boron 0.005
This specification is under the jurisdiction of ASTM Committee A-1 on Steel,
Antimony 0.005
Stainless Steel, and Related Alloys and is the direct responsibility of Subcommittee
Silver 0.005
A01.18 on Castings.
Bismuth 0.005
Current edition approved Dec. 15, 1993. Published April 1994. Originally
A
published as A 482 – 63 T. Last previous edition A 482 – 76 (1983).
For purposes of determining conformance with this specification, the reported
2
Annual Book of ASTM Standards, Vol 14.02. analysis shall be rounded to the nearest unit in the right-hand place of figures used
3
Annual Book of ASTM Standards, Vol 03.05. in expressing the limiting value, in accordance with the rounding method of
4
Annual Book of ASTM Standards, Vol 03.06. Practice E 29.
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A 482 – 93 (2000)
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 ⁄2in. (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 ⁄4in. (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.
of friability; therefore, some attrition may be expected in 7.3 Wheren no method is given in Methods E 31 or Test
transit, storage, and handling. A quantitative test is not avail- Methods E 364 for the analysis of a particular element, the
able for rating relative friability of ferroalloys. A code system
analysis s
...