ASTM A482/A482M-11(2021)

Standard Specification for Ferrochrome-Silicon

ABSTRACT
This specification covers ferrochrome-silicon of Grades A and B. Chemical analysis shall be performed wherein specimens shall conform to required chemical composition of chromium, carbon, silicon, sulfur, phosphorus, nitrogen, manganese, nickel, vanadium, copper, molybdenum, columbium, tantalum, cobalt, aluminum, titanium, zirconium, arsenic, lead, tin, zinc, boron, antimony, silver, and bismuth.
SCOPE
1.1 This specification covers several grades of ferrochrome-silicon.  
1.2 Units—The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.  
1.2.1 This specification is expressed in both inch-pound units and in SI units; however, unless the purchase order or contract specifies the applicable M specification designation (SI units), the inch-pound units shall apply.  
1.2.2 Within the text, the SI units are shown in brackets.  
1.3 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.

General Information

• Status: Published
• Publication Date: 28-Feb-2021
• ICS: 77.100 - Ferroalloys
• Technical Committee: A01 - Steel, Stainless Steel and Related Alloys
• Drafting Committee: A01.18 - Castings

Relations

• Refers: ASTM A1025/A1025M-10(2020) - Standard Specification for Ferroalloys and Other Alloying Materials, General Requirements
• Effective Date: 01-Mar-2020
• Refers: ASTM A1025/A1025M-10(2015) - Standard Specification for Ferroalloys and Other Alloying Materials, General Requirements
• Effective Date: 01-Nov-2015
• Refers: ASTM E11-13 - Standard Specification for Woven Wire Test Sieve Cloth and Test Sieves
• Effective Date: 01-Oct-2013
• Refers: ASTM A1025/A1025M-10 - Standard Specification for Ferroalloys, General Requirements
• Effective Date: 01-Oct-2010
• Refers: ASTM E11-09e1 - Standard Specification for Woven Wire Test Sieve Cloth and Test Sieves
• Effective Date: 01-May-2009
• Refers: ASTM E11-04 - Standard Specification for Wire Cloth and Sieves for Testing Purposes
• Effective Date: 01-May-2004
• Refers: ASTM E11-95 - Standard Specification for Wire Cloth and Sieves for Testing Purposes
• Effective Date: 10-May-2001
• Refers: ASTM E11-01 - Standard Specification for Wire Cloth and Sieves for Testing Purposes
• Effective Date: 10-May-2001
• Refers: ASTM E364-94(2000) - Standard Test Methods for Chemical Analysis of Ferrochrome-Silicon (Withdrawn 2006)
• Effective Date: 01-Jan-2000

Overview

ASTM A482/A482M-11(2021): Standard Specification for Ferrochrome-Silicon establishes the requirements for ferrochrome-silicon alloys, widely used in steelmaking and other metallurgical processes. Developed by ASTM International, this standard defines the chemical composition, size, and tolerances for Grades A and B ferrochrome-silicon, ensuring consistent quality and material performance. The specification applies globally, aligning with internationally recognized principles for standardization.

Key Topics

• Grades and Composition: Covers two primary grades - Grade A and Grade B - distinguished by their chromium, silicon, and carbon content.
• Chemical Requirements: Specifies permissible ranges and maximum values for elements such as chromium, silicon, carbon, sulfur, phosphorus, and various trace elements (e.g., nitrogen, manganese, nickel, vanadium).
• Size and Tolerances: Details standard lump sizes and the allowable tolerances for both SI and inch-pound units to address handling, shipping, and end-use requirements.
• Test Methods and Analysis:
  • Requires chemical analysis for each shipment.
  • Endorses specific ASTM chemical analysis methods and procedures mutually agreed by purchasing parties.
• Dual Unit System: Provides requirements in both inch-pound and SI units, emphasizing that values from different unit systems must not be combined.

Applications

The use of ferrochrome-silicon standardized under ASTM A482/A482M is crucial in the following industrial sectors:

• Steel Industry: Acts as a vital alloy in the production of stainless steel, specialty steels, and other alloys. It functions both as a source of silicon and chromium and as a deoxidizer.
• Casting and Foundry Works: Used to control the chemical composition during the casting process, providing desirable mechanical properties and resistance qualities.
• Manufacturing Specifications: Facilitates the procurement process by ensuring buyers and suppliers use reliable, globally accepted benchmarks for ferrochrome-silicon quality.
• Export and Trade: Assists international trade and compliance, reducing technical barriers by providing harmonized criteria for material acceptance.

Related Standards

Several other standards provide context, guidance, and referenced procedures relevant to ASTM A482/A482M:

• ASTM A1025/A1025M: General requirements for ferroalloys and alloying materials, referenced for supplementary requirements.
• ASTM E11: Specification for woven wire test sieve cloth and test sieves, supporting standardized particle sizing.
• ASTM E364: Former test methods for chemical analysis of ferrochrome-silicon (withdrawn), referenced as a historical baseline for analysis procedures.
• World Trade Organization (WTO) Principles: Reinforces compliance with WTO guidelines for international standardization, reducing trade barriers.

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Adhering to ASTM A482/A482M-11(2021) ensures the reliable production and procurement of ferrochrome-silicon, a critical input in diverse metallurgical applications. Compatibility with international quality and trade requirements provides added assurance for global industry stakeholders. For further technical details or procurement guidelines, always refer to the latest edition of the standard and related ASTM documents.

Standards Content (Sample)

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: A482/A482M −11 (Reapproved 2021)
Standard Specification for
Ferrochrome-Silicon
This standard is issued under the fixed designationA482/A482M; 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 any supplementary requirements that are indicated in the
purchase order. Failure to comply with the general require-
1.1 This specification covers several grades of ferrochrome-
ments of Specification A1025/A1025M constitutes nonconfor-
silicon.
mance with this specification. In case of conflict between the
1.2 Units—The values stated in either SI units or inch-
requirements of this specification and Specification A1025/
pound units are to be regarded separately as standard. The
A1025M, this specification shall prevail.
values stated in each system may not be exact equivalents;
therefore, each system shall be used independently of the other.
4. Chemical Composition
Combining values from the two systems may result in non-
4.1 The various grades shall conform to the requirements as
conformance with the standard.
to chemical composition specified in Tables 1 and 2.
1.2.1 This specification is expressed in both inch-pound
units and in SI units; however, unless the purchase order or
4.2 The manufacturer shall furnish an analysis of each
contract specifies the applicable M specification designation
shipment showing the percentage of each element specified in
(SI units), the inch-pound units shall apply.
Table 1.
1.2.2 Within the text, the SI units are shown in brackets.
4.3 The values shown in Table 2 are expected maximums.
1.3 This international standard was developed in accor-
Upon request of the purchaser, the manufacturer shall furnish
dance with internationally recognized principles on standard-
an analysis for any of these elements on a cumulative basis
ization established in the Decision on Principles for the
over a period mutually agreed upon between the manufacturer
Development of International Standards, Guides and Recom-
and the purchaser.
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
5. Size
2. Referenced Documents
5.1 The various grades are available in sizes as listed in
Table 3.
2.1 ASTM Standards:
A1025/A1025M Specification for Ferroalloys and Other Al-
5.2 The sizes listed in Table 3 are typical as shipped from
loying Materials, General Requirements
the manufacturer’s plant. These alloys exhibit varying degrees
E11 Specification for Woven Wire Test Sieve Cloth and Test
of friability; therefore, some attrition may be expected in
Sieves
transit, storage, and handling. A quantitative test is not avail-
E364 Test Methods for Chemical Analysis of Ferrochrome-
able for rating relative friability of ferroalloys. A code system
Silicon (Withdrawn 2006)
has been developed, therefore, for this purpose, and a number
rating each product type is shown in the last column of Table
3. General Conditions for Delivery
3. Definitions applicable to these code numbers are given in
3.1 Materials furnished to this specification shall conform to
Specification A1025/A1025M.
the requirements of Specification A1025/A1025M, including
6. Chemical Analysis
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
6.1 The chemical analysis of the material shall be made in
A01.18 on Castings.
accordance with the procedure for the ferroalloys as described
Current edition approved March 1, 2021. Published March 2021. Originally
in Test Methods E364, or alternative methods, agreed upon by
approved in 1963. Last previous edition approved in 2016 as A482/A482M – 11
the purchaser and supplier, that will yield equivalent results.
(2016). DOI: 10.1520/A0482_A0482M-11R21.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
6.2 If alternative methods of analysis are used, in case of
contact
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