ASTM C1047-19 PDF

Full title and description

Standard Specification for Accessories for Gypsum Wallboard and Gypsum Veneer Base — specification covering manufactured accessories used with gypsum wallboard and gypsum veneer base to protect edges and corners and to provide architectural features (cornerbeads, edge trims, control joints, casing beads, bull noses, stops, and similar formed products).

Abstract

ASTM C1047-19 defines materials, dimensional and performance characteristics, and basic workmanship requirements for accessories used with gypsum board and gypsum veneer base. It addresses permitted materials (metal, plastic, metal-and-paper combinations), corrosion-resistant coatings for steel components, required properties for paper components (thickness, tensile strength, dimensional stability, bond to joint compounds and tape), and general acceptability criteria such as freedom from twist, camber, burrs, and sharp edges.

General information

• Status: Current (active standard).
• Publication date: Approved Nov 1, 2019; published November 2019.
• Publisher: ASTM International.
• ICS / categories: 91.100.10 (Cement. Gypsum. Lime. Mortar).
• Edition / version: C1047-19 (2019).
• Number of pages: 4 pages.

(Metadata and current-status confirmation based on ASTM document summaries and standards indexes.)

Scope

Specifies minimum requirements for accessories used in conjunction with gypsum wallboard and gypsum veneer base assemblies: including shapes and functions (cornerbeads, edge trims, control joints, casing beads, bull noses, stops), acceptable base materials (zinc‑coated cold‑rolled steel, plastics, combinations of metal and paper or plastic and paper), allowable surface treatments (e.g., phosphatizing), and required properties for paper components and bonded assemblies. The standard is intended for use by manufacturers, specifiers, and installers to ensure accessory compatibility and safety in gypsum board assemblies.

Key topics and requirements

• Definitions and accessory types: cornerbeads, edge trims, control joints, casing beads, bull noses, stops.
• Material requirements: steel accessories and steel components of steel‑and‑paper products to be made from zinc‑coated cold‑rolled sheet steel (or equivalent corrosion protection); plastics and coated materials permitted where appropriate.
• Paper component requirements: specified thickness, tensile strength, dimensional stability, and bond characteristics to joint compounds / tape.
• Manufacturing and workmanship: parts must be free of twist, camber, burrs, and sharp edges that would impede installation or create safety hazards.
• Referenced practices and tests: cross‑references to related ASTM standards for metallic coatings, joint compounds, joint tape, and gypsum board practices included in the standard.

These requirements are concise by design (4‑page specification) and intended to be referenced in product specifications and construction documents.

Typical use and users

Used by accessory manufacturers (to qualify product construction and materials), product engineers, architects and specifiers (to call out acceptable accessory types and materials in project specifications), contractors and installers (to verify product suitability at installation), and code officials or inspectors (for conformity with specified accessory requirements). Typical applications are interior gypsum board installations and gypsum veneer plaster base systems.

Related standards

ASTM C1047 commonly references and is used alongside other ASTM standards for gypsum products and accessories, including (but not limited to) ASTM C11 (terminology relating to gypsum), C1396/C1396M (gypsum board), C475/C475M (joint compound and joint tape), C587 (gypsum veneer plaster), C840 (application and finishing of gypsum board), and applicable metallic coating standards for steel sheet.

Keywords

gypsum wallboard, gypsum veneer base, accessories, cornerbead, edge trim, control joint, casing bead, zinc‑coated steel, paper component, ASTM C1047-19.

FAQ

Q: What is this standard?

A: ASTM C1047-19 is the ASTM International specification that defines requirements for accessories used with gypsum wallboard and gypsum veneer base (corner beads, edge trims, control joints, and similar accessories).

Q: What does it cover?

A: It covers accessory types and functions, acceptable materials (metal, plastic, metal‑and‑paper combinations), corrosion‑protection and surface treatment expectations for steel parts, required paper component properties, and basic workmanship criteria (no twist, camber, burrs, or sharp edges).

Q: Who typically uses it?

A: Manufacturers, product engineers, architects/specifiers, contractors/installers, and code officials who work with gypsum board and gypsum veneer base systems.

Q: Is it current or superseded?

A: As of the most recent public standards indexes and document summaries, C1047-19 (approved November 1, 2019) is the current edition. Users should confirm on the official ASTM catalog before final specification to ensure no later revision has been published since this summary.

Q: Is it part of a series?

A: It is part of ASTM Committee C11 work on gypsum and related building materials and is used together with other C11 series standards addressing gypsum board, joint treatment, veneer base, and accessory testing/specifications (e.g., C1396, C475, C587, C840).

Q: What are the key keywords?

A: gypsum wallboard, gypsum veneer base, accessories, cornerbead, edge trim, control joint, zinc‑coated steel, paper component, workmanship.