ASTM A446/A446M-93 PDF

Full title and description

ASTM A446/A446M-93 — Specification for Steel Sheet, Zinc-Coated (Galvanized) by the Hot-Dip Process, Structural (Physical) Quality. This designation covers hot-dip zinc-coated carbon steel sheet intended for structural applications where defined mechanical (physical) properties are required, and provides grade designations, mechanical-property requirements, and general coating guidance for manufacturing and procurement.

Abstract

This standard defines the requirements for zinc (hot-dip) coated steel sheet produced for structural (physical) quality, including grade definitions, tensile and yield characteristics, elongation, and dimensional and coating criteria used to specify material for structural and forming applications. It was issued as a dual-designation document (inch-pound and metric) under A446/A446M.

General information

• Status: Withdrawn / inactive (replaced by ASTM A653).
• Publication date: 1993 (designation A446/A446M-93).
• Publisher: ASTM International (American Society for Testing and Materials).
• ICS / categories: 77.140.50 (Flat steel products and semi-products) — steel sheet; galvanized coatings.
• Edition / version: A446/A446M-93 (dual inch-pound / metric designation).
• Number of pages: Approximately 3–4 pages (short specification format).

Key bibliographic facts (status, replacement and date) are recorded in standard-history sources and catalogs.

Scope

The scope covers hot-dip zinc-coated (galvanized) carbon steel sheet supplied for structural (physical) quality applications. The standard establishes grade definitions tied to mechanical-property levels (yield, tensile, elongation), minimum testing requirements, and general coating requirements for hot-dip galvanized products intended for structural use. It was intended for ordering, inspection, and verification of galvanized sheet used where specified physical properties are required.

Key topics and requirements

• Product designation and grade system for structural-quality galvanized sheet (multiple grades tied to mechanical-property ranges).
• Mechanical-property requirements: tensile strength, yield (or minimum specified strength), and elongation criteria for each grade.
• Coating specification: hot-dip zinc-coating requirement and acceptable coating mass/weight categories appropriate for galvanized sheet.
• Dimensional tolerances, surface condition and workmanship criteria relevant to structural applications.
• Required tests and inspection procedures (mechanical testing, visual inspection and coating assessment) for verification at manufacture or receipt.
• Ordering information and designation conventions (including dual units where applicable under the A446/A446M designation).

Typical use and users

Used by specifiers, procurement engineers, fabricators, roll-formers, and manufacturers of galvanized steel components for building and structural applications (roofing, wall panels, structural members where a specified physical-quality galvanized sheet is required). Also referenced by quality and inspection personnel to confirm mechanical and coating requirements prior to acceptance. Because the designation has been withdrawn and replaced, users now typically reference the replacing standard for current procurement.

Related standards

Primary replacement/related standard: ASTM A653 (Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process). Other related ASTM sheet and coating specifications address coating weights, test methods and dimensional tolerances for galvanized and pretreated sheet products.

Keywords

ASTM A446, A446M-93, galvanized steel sheet, hot-dip galvanized, structural quality, zinc-coated, steel sheet grades, mechanical properties, coating mass, ASTM A653 (replacement), withdrawn standard.

FAQ

Q: What is this standard?

A: ASTM A446/A446M-93 is a short specification that defined requirements for steel sheet that had been zinc-coated by the hot-dip process for structural (physical) quality applications.

Q: What does it cover?

A: It covered grade designations for structural-quality galvanized sheet, mechanical-property requirements (tensile, yield, elongation), coating guidance for hot-dip zinc, dimensional and surface requirements, and basic testing/inspection expectations for acceptance.

Q: Who typically uses it?

A: Material specifiers, architects/engineers, procurement and quality personnel, manufacturers and fabricators of galvanized steel components used in building and structural applications. After withdrawal, users typically refer to the replacement standard for current procurement.

Q: Is it current or superseded?

A: ASTM A446/A446M-93 is withdrawn (inactive). It was replaced by ASTM A653; the withdrawal was recorded in 1994 in the ASTM document history. Users should reference A653 (and current ASTM publications) for active requirements.

Q: Is it part of a series?

A: The designation follows ASTM naming practice where the “/A446M” indicates a dual inch-pound and metric presentation. The subject area is within the family of ASTM standards for galvanized and coated steel sheet; it was later consolidated under broader sheet-coating standards (notably A653).

Q: What are the key keywords?

A: Galvanized steel sheet, hot-dip, zinc-coated, structural quality, tensile strength, coating mass, ASTM A446, A446M-93, ASTM A653 (replacement).