ASTM A483/A483M-10(2020)

Standard Specification for Silicomanganese

ABSTRACT
This specification covers standards for silicomanganese of Grades A, B, and C. Materials shall conform to manganese, silicon, carbon, phosphorus, and sulfur contents, as well as supplemental requirements of arsenic, tin, lead, chromium, nickel, and molybdenum. The material shall also conform to standard sizes and tolerances.
SCOPE
1.1 This specification covers grades of silicomanganese.  
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 nonconformance with the standard.  
1.2.1 This specification is expressed in both inch-pound units and in SI units (within the text, the SI units are shown in brackets); however, unless the purchase order or contract specifies the applicable M specification designation (SI units), the inch-pound units shall apply.  
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: 29-Feb-2020
• ICS: 77.100 - Ferroalloys
• Technical Committee: A01 - Steel, Stainless Steel and Related Alloys
• Drafting Committee: A01.18 - Castings

Relations

• Replaces: ASTM A483/A483M-10(2015) - Standard Specification for Silicomanganese
• 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
• Referred By: ASTM A1025/A1025M-10(2020) - Standard Specification for Ferroalloys and Other Alloying Materials, General Requirements
• Effective Date: 01-Mar-2020

Overview

ASTM A483/A483M-10(2020) is the internationally recognized standard specification for silicomanganese, developed by ASTM International. This standard provides clear requirements for the chemical composition, size, and tolerances of silicomanganese grades used in steelmaking and alloy manufacturing worldwide. The specification is established in compliance with the World Trade Organization's principles for developing international standards, ensuring global acceptance and applicability.

Key Topics

• Grades and Chemical Composition
  • Covers three grades: A, B, and C, each varying mainly in silicon and carbon content.
  • Specifies limits for key elements: manganese (65.0–68.0%), silicon (12.5–21.0%), carbon, phosphorus, and sulfur.
  • Includes supplemental limits on elements such as arsenic, tin, lead, chromium, nickel, and molybdenum, supporting high-purity and performance requirements.
• Size and Tolerance Requirements
  • Silicomanganese must conform to defined size ranges and sieving tolerances for consistent supply and processing.
  • Typical sizes range from large lumps (up to 8 in. by 4 in.) to fines (down to 2 in.).
  • Sizing is referenced to sieve standards such as ASTM E11 to ensure uniformity.
• Units of Measurement
  • Provides equivalent requirements in both SI and inch-pound units.
  • Units must not be mixed within a specification or purchase order to ensure conformity and avoid misinterpretation.
• General Delivery Conditions
  • Materials must also conform to general requirements as outlined in ASTM A1025/A1025M.
  • Manufacturer analysis and documentation are required for each shipment, with additional analytical data provided upon request.

Applications

Silicomanganese conforming to ASTM A483/A483M-10(2020) is widely utilized in several critical metallurgical and industrial processes, including:

• Steelmaking
  • Acts as a deoxidizer and an alloying element, improving the mechanical properties and quality of steel products.
  • Used to control sulfur content and enhance strength, toughness, and wear resistance in steel alloys.
• Foundry Applications
  • Improves castability and reduces inclusions in iron and steel castings.
• Production of Ferroalloys
  • Serves as a blending material in the manufacture of various other ferroalloys and specialty metals.
• Global Trade and Procurement
  • The standardization facilitates international trade of silicomanganese, supporting consistent quality and regulatory compliance across markets.

Related Standards

• ASTM A1025/A1025M
  • General requirements for ferroalloys and alloying materials used in steel and alloy production.
• ASTM E11
  • Specification for woven wire test sieve cloth and test sieves, referenced for size and tolerance definitions in silicomanganese shipment.
• Other Standards
  • ASTM and international bodies provide related specifications for production, testing, and delivery of alloying materials used in the steel industry.

ASTM A483/A483M-10(2020) standardizes the specification for silicomanganese, supporting consistent product quality and reliability across industries involved in steelmaking and alloy production. Adhering to this standard ensures that manufacturers, suppliers, and end-users maintain compliance and achieve optimal results in their metallurgical applications.

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: A483/A483M −10 (Reapproved 2020)
Standard Specification for
Silicomanganese
This standard is issued under the fixed designationA483/A483M; 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 A1025/A1025M Specification for Ferroalloys and Other Al-
loying Materials, General Requirements
1.1 This specification covers grades of silicomanganese.
E11 Specification for Woven Wire Test Sieve Cloth and Test
1.2 Units—The values stated in either SI units or inch-
Sieves
pound units are to be regarded separately as standard. The
3. General Conditions for Delivery
values stated in each system may not be exact equivalents;
therefore, each system shall be used independently of the other.
3.1 Materials furnished to this specification shall conform to
Combining values from the two systems may result in noncon-
the requirements of Specification A1025/A1025M, including
formance with the standard.
any supplementary requirements that are indicated in the
1.2.1 This specification is expressed in both inch-pound
purchase order. Failure to comply with the general require-
units and in SI units (within the text, the SI units are shown in
ments of Specification A1025/A1025M constitutes nonconfor-
brackets); however, unless the purchase order or contract
mance with this specification. In case of conflict between the
specifies the applicable M specification designation (SI units),
requirements of this specification and Specification A1025/
the inch-pound units shall apply.
A1025M, this specification shall prevail.
1.3 This international standard was developed in accor-
4. Chemical Composition
dance with internationally recognized principles on standard-
4.1 The various grades shall conform to the requirements as
ization established in the Decision on Principles for the
to chemical composition specified in Tables 1 and 2.
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical 4.2 The manufacturer shall furnish an analysis of each
Barriers to Trade (TBT) Committee. shipment showing the percentage of each element specified in
Table 1.
2. Referenced Documents
4.3 Upon request of the purchaser, the manufacturer shall
2.1 ASTM Standards: furnish an analysis for the elements specified in Table 2 on a
cumulative basis over a period mutually agreed upon by the
manufacturer and the purchaser.
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
5. Size
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
A01.18 on Castings.
5.1 The various grades are available in sizes as listed in
Current edition approved March 1, 2020. Published March 2020. Originally
Table 3.
approved in 1963. Last previous edition approved in 2015 as A483/A483M – 10
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