ASTM A483/A483M-10 (2025) PDF

Full title and description

ASTM A483/A483M-10 (reissued 2025) — Standard Specification for Silicomanganese. This specification establishes requirements for silicomanganese produced in Grades A, B, and C, including chemical composition, supplemental element limits, and standard sizes and tolerances for use as a ferroalloy and alloying additive in steelmaking and foundry applications.

Abstract

This specification covers silicomanganese in three grades (A, B, and C). It specifies required ranges for manganese, silicon, carbon, phosphorus, and sulfur, and lists supplemental limits for elements such as arsenic, tin, lead, chromium, nickel, and molybdenum. The standard also states requirements for units (inch‑pound and SI M-version), sizes/tolerances, and ordering information applicable to purchasers and producers.

General information

• Status: Active (reissued/affirmed in 2025).
• Publication date: 2025 (designation shown as A483/A483M-10 with 2025 reissue; listed implementation date 01 Sep 2025).
• Publisher: ASTM International.
• ICS / categories: 77.100 — Ferroalloys.
• Edition / version: A483/A483M-10 (reissued R25 / 2025 reissue).
• Number of pages: 2 pages (concise specification).

Scope

The specification applies to silicomanganese produced and supplied in Grades A, B, and C for use as an alloying additive in steel and related metallurgy. It defines required chemical compositions (manganese, silicon, carbon, phosphorus, sulfur), allowable supplemental elements and limits (for example arsenic, tin, lead, chromium, nickel, molybdenum), packing/size tolerances and the use of inch‑pound and SI (M) units. The standard is short and intended to be used with purchaser‑supplier agreements and referenced general ferroalloy requirements.

Key topics and requirements

• Definition of Grades A, B, and C for silicomanganese and typical intended uses.
• Chemical composition limits for Mn, Si, C, P, and S by grade.
• Supplemental element limits (As, Sn, Pb, Cr, Ni, Mo, etc.) and related acceptance criteria.
• Specification of units: inch‑pound values are primary unless the M (SI) designation is invoked.
• Requirements for sizes, tolerances, and packaging as applicable to shipments.
• Ordering information and reference to broader ferroalloy general requirements where appropriate.

Typical use and users

Primary users are steelmakers, foundries, ferroalloy producers, metallurgical chemists, procurement/specification engineers, and quality/control laboratories that purchase or test silicomanganese for use as a manganese‑silicon alloying agent. The standard is used to frame purchase contracts, supplier certifications, and incoming inspection criteria.

Related standards

Commonly referenced related documents include ASTM A1025/A1025M (general requirements for ferroalloys and other alloying materials) and other ferroalloy specifications and sampling/testing practices used by steelmakers and suppliers. Historical editions and redline (RLV) publications and later reissues (2015, 2020, 2025 reissues) document the standard’s revision history.

Keywords

silicomanganese, ferroalloy, manganese‑silicon, alloying additive, Grade A, Grade B, Grade C, chemical composition, ASTM A483, ferroalloys, ICS 77.100.

FAQ

Q: What is this standard?

A: ASTM A483/A483M-10 (reissued 2025) is the ASTM International specification that sets chemical and supply requirements for silicomanganese produced in Grades A, B, and C for use as a ferroalloy.

Q: What does it cover?

A: It covers grade definitions, chemical composition limits (Mn, Si, C, P, S), supplemental element limits (As, Sn, Pb, Cr, Ni, Mo, etc.), units of measure (inch‑pound and SI M‑designation), and basic size/tolerance and ordering provisions.

Q: Who typically uses it?

A: Steel producers, foundries, ferroalloy suppliers, metallurgists, QA/QC labs, and procurement/specification engineers use the standard to specify, buy, and verify silicomanganese shipments.

Q: Is it current or superseded?

A: The A483/A483M-10 designation has been reissued; the 2025 reissue is listed as the active reissued version (implementation date listed as 01 Sep 2025). Earlier reissues (2015, 2020) appear in the document history; consult ASTM for the authoritative current status.

Q: Is it part of a series?

A: It belongs to ASTM’s ferroalloy/steel materials series (Committee A01) and is commonly used alongside general ferroalloy requirements (for example ASTM A1025/A1025M) and other specific ferroalloy specifications.

Q: What are the key keywords?

A: Silicomanganese, ferroalloy, manganese, silicon, alloying additive, Grades A/B/C, composition limits, ASTM A483.