ASTM B498/B498M-22 PDF
Name in English:
St ASTM B498/B498M-22
Name in Russian:
Ст ASTM B498/B498M-22
Original standard ASTM B498/B498M-22 in PDF full version. Additional info + preview on request
Full title and description
Designation: ASTM B498/B498M‑22 — Standard Specification for Zinc‑Coated (Galvanized) Steel Core Wire for Use in Overhead Electrical Conductors. The standard specifies requirements for round, zinc‑coated steel core wire intended for mechanical reinforcement in aluminum conductors, steel‑reinforced (ACSR), including coating classes, chemical composition, mechanical properties, dimensional limits, and required tests.
Abstract
This specification covers round, zinc‑coated (galvanized) steel core wire for use in overhead electrical conductors. It defines product classification and product codes, allowable wire diameters, chemical composition limits for the steel, zinc coating classes and mass requirements, mechanical property tests (tensile, elongation, wrap), coating adherence and coating mass tests, and requirements for permitted joints (butt/flash welding). The 2022 edition (B498/B498M‑22) is the current revision.
General information
- Status: Published / Active.
- Publication date: Approved Oct 1, 2022; published October 2022.
- Publisher: ASTM International (ASTM, Committee B01 — Electrical Conductors).
- ICS / categories: 29.240.20 — Power transmission and distribution lines.
- Edition / version: B498/B498M‑22 (2022 revision).
- Number of pages: Approximately 4 pages (typical published document length).
Scope
The standard covers round, zinc‑coated steel core wire for use as the steel reinforcement in overhead conductors (ACSR). Wire diameters covered range from 0.0500 to 0.1900 in (1.27 to 4.82 mm). The document sets out product classification (product codes), coating class options, required chemical composition limits for the steel, testing and inspection requirements, ordering information, packaging, and acceptable joint types. Note: the 2022 edition describes the furnishing of the product in the specified coating classes (see classification).
Key topics and requirements
- Product designation and product codes (defines coating type, coating class and strength grade).
- Coating classes and coating mass/area density requirements (Class A / Class C in current clauses; historical editions referenced Class A, B, C).
- Permitted wire diameters: 0.0500–0.1900 in (1.27–4.82 mm).
- Chemical composition limits for steel (carbon, manganese, phosphorus, sulfur, silicon) and acceptance by chemical analysis.
- Mechanical testing: tensile tests (ultimate strength, elongation, stress at specified extension), wrap tests, and acceptance criteria.
- Coating tests: weight/mass of coating (A90/A90M), coating adherence tests, coating thickness/area density conformance.
- Joints: requirements for electric butt‑welded or flash‑welded joints where permitted.
- Reference to related ASTM test methods and practices (for example A90/A90M, A370, A751, B6, B193, and E29 as referenced in the standard).
Typical use and users
Primary users are manufacturers of ACSR (aluminum conductors, steel‑reinforced), wire and conductor fabricators, utility engineering and procurement departments, specification writers, testing laboratories, and materials inspectors who need to verify mechanical, chemical and coating properties of galvanized steel core wire used in overhead power transmission and distribution conductors. The standard is used to specify incoming material, perform acceptance testing, and document product codes and ordering details.
Related standards
Referenced and related ASTM documents commonly used alongside B498/B498M include: A90/A90M (weight/mass of zinc coating), A370 (mechanical testing of steel), A751 (chemical analysis practices), B6 (zinc specification), B193 (resistivity), and E29 (use of significant digits). B498/B498M is part of the ASTM B01 committee portfolio of conductor‑related standards (see companion conductor standards such as B401, B549, B803, etc.).
Keywords
zinc‑coated wire, galvanized steel core, ACSR, overhead conductors, coating class, coating mass, tensile test, wrap test, wire diameter, ASTM B498, B498M‑22, electrical conductors, product code.
FAQ
Q: What is this standard?
A: ASTM B498/B498M‑22 is the ASTM International specification that sets requirements for round, zinc‑coated (galvanized) steel core wire used as the steel reinforcement in overhead electrical conductors (ACSR).
Q: What does it cover?
A: It covers product classification and codes, wire diameters (0.0500–0.1900 in / 1.27–4.82 mm), chemical composition limits for the steel, zinc coating classes and mass/area requirements, mechanical and coating tests (tensile, wrap, coating adherence, coating mass), joint requirements, ordering information and packaging.
Q: Who typically uses it?
A: Conductor manufacturers, utility procurement/specification engineers, testing laboratories, materials inspectors, and suppliers of galvanized steel wire for overhead conductors.
Q: Is it current or superseded?
A: The B498/B498M‑22 edition (approved Oct 1, 2022) is the current published revision; earlier editions (e.g., B498/B498M‑19 and earlier) have been superseded by the 2022 revision.
Q: Is it part of a series?
A: It is maintained by ASTM Committee B01 (Electrical Conductors) and is part of a family of conductor and conductor‑component standards (e.g., conductor wire specifications and conductor assembly standards). It cross‑references several ASTM test methods and conductor specifications used jointly in conductor design and procurement.
Q: What are the key keywords?
A: Zinc‑coated, galvanized, steel core wire, ACSR, coating class, coating mass, tensile test, wrap test, ASTM B498, B498M‑22.