ISO 9854-2:2023

Overview

ISO 9854-2:2023, "Thermoplastics pipes for the transport of fluids - Determination of Charpy impact properties - Part 2: Test conditions for pipes of various materials," specifies the test parameter choices required when determining Charpy impact properties of thermoplastic pipes. It is a companion to ISO 9854-1 (general test method) and defines the values or options for impact energy, specimen dimensions and type (notched and unnotched), specimen supports, and test temperature for a range of pipe materials using the pendulum (Charpy) method.

Covered materials include: PVC-U, PVC-HI, PVC-O, PVC-C, ABS, ASA, PP-H, PP-B, PP-R, PP-RCT, and PE. Test temperatures allowed include –20 °C, 0 °C and 23 °C, depending on material and pipe size.

Key Topics and Requirements

• Scope and applicability: Lists specific thermoplastic materials and clarifies that data from different specimen dimensions are not directly comparable.
• Test parameters defined: Specifies impact energy, specimen dimensions, specimen type (notched/unnotched), supports and orientations (longitudinal vs. circumferential).
• Methods A and B: Two sets of test-condition tables (Method A - Tables 1–4; Method B - Tables 5–9). Selection depends on material and pipe dimensions; Method B is recommended in certain cases (e.g., thicker PP walls > 10.5 mm).
• Material- and size-dependent tables: Detailed tables map pipe nominal outside diameter and wall thickness to the appropriate specimen type, support arrangement and test temperature. Figures and specimen details are referenced to ISO 9854-1.
• Test temperatures: Standardizes test temperature choices (23 ±2 °C, 0 ±2 °C, –20 ±2 °C) based on material and intended application.

Applications and Users

ISO 9854-2:2023 is intended for:

• Pipe manufacturers performing routine quality control and product development.
• Independent testing laboratories executing Charpy pendulum impact tests on pipes.
• Materials engineers and R&D teams comparing impact resistance across thermoplastic formulations and pipe designs.
• Product standards developers and regulators who reference harmonized test conditions for certification and compliance.
• Specifiers and procurement professionals assessing fitness-for-service for fluid transport applications.

Practical uses include establishing repeatable test protocols, comparing material performance under standardized conditions, supporting failure analysis, and informing material selection for impact-critical piping applications.

Related Standards

• ISO 9854-1:2023 - Thermoplastics pipes - Determination of Charpy impact properties - Part 1: General test method (normative reference for specimen geometry and test arrangements).

Keywords: ISO 9854-2:2023, Charpy impact properties, thermoplastics pipes, pendulum method, impact resistance testing, PVC, ABS, PP-RCT, PE, test conditions, specimen dimensions.