ASTM A100-07(2024)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: A100 − 07 (Reapproved 2024)
Standard Specification for
Ferrosilicon
This standard is issued under the fixed designation A100; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope ments of Specification A1025/A1025M constitutes nonconfor-
mance with this specification. In case of conflict between the
1.1 This specification covers grades of ferrosilicon for
requirements of this specification and Specification A1025/
steelmaking and foundry uses.
A1025M, this specification shall prevail.
1.2 The values stated in inch-pound units are to be regarded
4. Chemical Composition
as the standard. The metric equivalents of inch-pound units (SI
units) given in parentheses may be approximate.
4.1 The various grades shall conform to the requirements as
to chemical composition prescribed in Table 1.
1.3 This international standard was developed in accor-
dance with internationally recognized principles on standard-
4.2 The manufacturer shall furnish an analysis of each
ization established in the Decision on Principles for the
shipment showing the silicon content and, when required, such
Development of International Standards, Guides and Recom-
of the other elements specified in Table 1.
mendations issued by the World Trade Organization Technical
5. Size
Barriers to Trade (TBT) Committee.
5.1 The various grades are available in sizes as listed in
2. Referenced Documents
Table 2.
2.1 ASTM Standards:
5.2 The sizes listed in Table 2 are typical as shipped from
A1025/A1025M Specification for Ferroalloys and Other Al-
the manufacturer’s plant. These alloys exhibit varying degrees
loying Materials, General Requirements
of friability; therefore, some attrition may be expected in
E11 Specification for Woven Wire Test Sieve Cloth and Test
transit, storage, and handling. A quantitative test is not avail-
Sieves
able for rating relative friability of ferroalloys. A code system
E360 Test Methods for Chemical Analysis of Silicon and
has been developed, therefore, for this purpose, and a number
Ferrosilicon (Withdrawn 2006)
rating for each product type is shown in the last column of
Table 2. Definitions applicable to these code numbers are given
3. General Conditions of Delivery
in Specification A1025/A1025M.
3.1 Materials furnished to this specification shall conform to
the requirements of Specification A1025/A1025M, including
6. Chemical Analysis
any supplementary requirements that are indicated in the
6.1 Unless otherwise agreed upon, the chemical analysis of
purchase order. Failure to comply with the general require-
the material shall be made in accordance with Test Methods
E360.
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
6.2 If alternative methods of analysis are used, Methods
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
E360 shall be used for referee.
A01.18 on Castings.
Current edition approved March 1, 2024. Published March 2024. Originally
6.3 Where a method is not given in Methods E360 for the
approved in 1925. Last previous edition approved in 2018 as A100 – 07 (2018).
analysis for a particular element, the analysis shall be made in
DOI: 10.1520/A0100-07R24.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or accordance with a procedure agreed upon between the manu-
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
facturer and the purchaser.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
7. Keywords
The last approved version of this historical standard is referenced on
www.astm.org. 7.1 ferroalloy; ferrosilicon
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
A100 − 07 (2024)
TABLE 1 Chemical Requirements
Grade
C CA CB C1 C2 D DA E EA E1 F F1 F1A G GA G1 G1A
Element
A,B
Composition, %
Silicon 74.0– 74.0– 74.0– 74.0– 74.0– 65.0– 65.0– 47.0– 47.0– 47.0– 20.0– 20.0– 20.0– 14.0– 14.0– 14.0– 14.0–
79.0 79.0 79.0 79.0 79.0 70.0 70.0 51.0 51.0 51.0 24.0 24.0 24.0 17.0 17.0 17.0 17.0
Carbon 0.10 0.10 0.10 0.10 0.10 0.10 0.10 .010 .010 0.10 0.50 0.50 0.50 0.70 0.70 0.70 0.70
Sulfur 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.025
Phosphorous 0.035 0.035 0.035 0.035 0.035 0.035 0.035 0.040 0.040 0.040 0.120 0.120 0.120 0.120 0.120 0.120 0.120
Aluminum 1.50 0.50 0.10 1.00– 1.00– 1.25 0.10 1.25 0.40 1.25 1.00 1.00 1.00 0.75 0.75 0.75 0.75
1.50 1.50
Manganese 0.40 0.40 0.40 0.40 0.40 0.50 0.50 0.75 0.75 0.75 1.00 1.00 1.00 1.25 — 1.25 —
C
Calcium — — — 0.50 1.50 — — — — — — — — — — — —
Boron
...