ASTM A218-58 PDF

Full title and description

St ASTM A218-58 — Specification for Zinc‑Coated Steel Wire Strand (Class B and Class C Coatings). Issued 1958; a short technical specification that addressed zinc (galvanized) coating classes for steel wire strand intended for general-purpose strand uses.

Abstract

This brief specification (A218-58) defined requirements for zinc‑coated (galvanized) steel wire strand, describing coating classes (Class B and Class C), basic acceptance and test expectations, and dimensional/finish considerations for strand products. The document was published in 1958 and is no longer active; later, more comprehensive ASTM wire‑strand standards cover the same subject matter.

General information

• Status: Withdrawn / inactive (historical specification).
• Publication date: January 1, 1958.
• Publisher: ASTM International (original publisher).
• ICS / categories: 77.140 — Iron and steel products (including 77.140.65: steel wire and wire ropes).
• Edition / version: A218-58 (1958 edition).
• Number of pages: ~5 pages (short specification).

Scope

The standard covered zinc‑coated steel wire strand intended for general use where a galvanized coating is required for corrosion protection. It set out coating class designations (Class B and Class C in the title), and addressed the basic quality, coating and acceptance characteristics for strand. The specification was concise and focused on coating classification rather than an extensive set of grades and test procedures now found in later ASTM strand standards.

Key topics and requirements

• Definition and designation of zinc‑coating classes for strand (Class B and Class C).
• General requirements for coated strand finish and uniformity.
• Dimensional and lay characteristics typical for stranded wire products.
• Reference to sampling, test methods and acceptance criteria (concise specification; specific referenced test methods were minimal compared with later standards).
• Intended applications: general purpose guy/messenger/utility strand and similar uses where galvanized protection is specified.

These topics are summarized from the historical listing for A218‑58 and from modern ASTM strand standards that replaced/expanded the subject matter.

Typical use and users

Typical users were manufacturers and suppliers of galvanized steel strand, procurement/specification engineers, and testing laboratories dealing with wire strand corrosion protection. Today engineers and purchasers reference more recent ASTM strand and wire‑coating standards for procurement.

Related standards

A218‑58 is a historical/withdrawn listing; modern ASTM standards that address zinc‑coated steel wire strand and related coated wire products include ASTM A475 (Standard Specification for Zinc‑Coated Steel Wire Strand), ASTM A641 (Zinc‑Coated Carbon Steel Wire), and other ASTM/ISO/EN documents on zinc coatings and coated wires (for example EN/ISO wire galvanizing and coating mass standards). ASTM A475 is the principal, more comprehensive strand specification used in current practice.

Keywords

ASTM A218‑58; zinc‑coated; galvanized; steel wire strand; Class B; Class C; withdrawn; strand specification; coating class.

FAQ

Q: What is this standard?

A: ASTM A218‑58 is a 1958 ASTM specification titled "Specification for Zinc‑Coated Steel Wire Strand (Class B and Class C Coatings)" that provided short, focused requirements for galvanized strand.

Q: What does it cover?

A: It covered zinc (galvanized) coating classes for steel wire strand (Class B and Class C) and the basic acceptance/quality expectations for coated strand products; it was concise and limited in scope compared with later strand standards.

Q: Who typically uses it?

A: Historically, wire‑strand manufacturers, suppliers, specifiers and testing labs. In current practice users reference newer, active ASTM standards (for example ASTM A475 and ASTM A641) for procurement and testing.

Q: Is it current or superseded?

A: It is withdrawn/inactive. The subject matter is now covered by more recent and comprehensive standards such as ASTM A475 (Zinc‑Coated Steel Wire Strand) and other ASTM/ISO/EN wire and coating specifications.

Q: Is it part of a series?

A: A218‑58 was part of the historical body of ASTM metallic‑wire and coating specifications; related active standards form the modern series of wire/strand and coating specifications (for example ASTM A641, A475, and related galvanizing/coating standards).

Q: What are the key keywords?

A: Zinc‑coated, galvanized, steel wire strand, coating class B, coating class C, strand specification, ASTM, withdrawn.