ASTM D4226-19e1 PDF

Full title and description

Standard Test Methods for Impact Resistance of Rigid Poly(Vinyl Chloride) (PVC) Building Products — test procedures that determine the energy required to crack or break rigid PVC sheeting and profile flat sections (including extruded or molded specimens) using a free‑falling standard weight with defined impactor heads.

Abstract

ASTM D4226-19e1 specifies two procedures (Procedure A to determine minimum impact energy to cause general failure and Procedure B to determine minimum energy for brittle failure) and describes specimen preparation, impactor head configurations, test apparatus and reporting requirements for characterizing impact resistance of rigid PVC building products. The methods are intended for product characterization, quality control, weatherability research and related applications.

General information

• Status: Current published edition with editorial correction (2019, e1); under ASTM revision activity (work item WK90393 initiated 22‑Apr‑2024).
• Publication date: 11 January 2019 (designation D4226-19 with editorial change e1).
• Publisher: ASTM International (formerly American Society for Testing and Materials).
• ICS / categories: 83.080.20 — Thermoplastic materials (plastics).
• Edition / version: 2019 edition, editorial correction indicated by "e1" (editorial changes/corrections to the published text).
• Number of pages: 8 pages (published short test method).

Scope

The standard covers determination of the energy required to crack or break rigid PVC sheeting and flat profile sections used in building products, and includes two procedures: Procedure A to find the minimum impact energy that causes observable failure modes (hole, crack, split, shatter or tear) and Procedure B to determine the minimum impact energy producing brittle failure (ductile‑to‑brittle transition). Test values are reported in inch‑pound units (SI conversions provided for information).

Key topics and requirements

• Two defined test procedures (Procedure A — minimum energy to cause failure; Procedure B — minimum brittle failure energy).
• Use of a free‑falling standard weight and interchangeable impactor head geometries (commonly including H.25 and C.125 configurations) to suit specimen thickness and anticipated failure mode.
• Specimen preparation, conditioning, and surface/edge considerations for reproducible results; normalization for thickness allowed in limited ranges when comparing like test heads.
• Applications for compound qualification, finished product quality control, environmental/weatherability studies and fabrication tolerance prediction.
• Reporting requirements and safety/precaution notes; the standard does not itself address all safety concerns (users must apply appropriate safety practices).

Typical use and users

Test laboratories, PVC compound and profile manufacturers, product development and QA/QC teams in the building products industry, third‑party test houses and researchers use D4226 to characterize impact resistance of rigid PVC components such as siding, trim, window profiles and other extruded or molded building product sections. Test data support specification compliance, material selection and failure‑mode analysis.

Related standards

ASTM D4226 is commonly associated with other impact and coating test methods and equipment standards (for example ASTM D2794 and D5420 use similar impact apparatus). It is referenced by or related to other PVC product specifications and building‑product standards (committee D20 family and standards such as F964 and F1735 reference related test practices/specifications).

Keywords

impact resistance, PVC, rigid poly(vinyl chloride), falling‑weight impact, brittle failure energy, ductile‑to‑brittle transition, building products, profile sections, procedure A, procedure B, thermoplastic materials.

FAQ

Q: What is this standard?

A: ASTM D4226-19e1 is a test method standard that defines procedures to measure the impact resistance of rigid PVC building products (energy required to crack or break flat sections and test specimens).

Q: What does it cover?

A: It covers the test apparatus, specimen preparation and two procedures for determining minimum impact energy causing general failure (Procedure A) and brittle failure (Procedure B), plus reporting and precautionary guidance.

Q: Who typically uses it?

A: Material and product test laboratories, PVC manufacturers, QA/QC engineers, R&D teams, and standards bodies or specifiers in the construction and building‑products sector.

Q: Is it current or superseded?

A: The published edition is D4226-19 with an editorial correction (e1). The ASTM record shows active maintenance/revision work (work item WK90393 initiated April 22, 2024) indicating the committee is preparing a revision. Users should confirm the latest status through ASTM before formal use.

Q: Is it part of a series?

A: It is maintained by ASTM Committee D20 (Plastics), subcommittee D20.24 (Plastic Building Products), and is one of the D‑series test methods for plastics; prior editions include D4226-16 and earlier revisions.

Q: What are the key keywords?

A: Impact resistance, rigid PVC, falling weight, brittle failure energy, ductile‑to‑brittle transition, building products, test procedure A, test procedure B.