ISO 179-1:2010 - Plastics — Determination of Charpy impact properties — Part 1: Non-instrumented impact test

ISO 179 specifies the method for determining the Charpy impact strength of plastics under defined conditions. The test evaluates the ability of a material to absorb energy when fractured by a pendulum impact. The results provide insights into the toughness of the plastic, which is critical for applications requiring impact resistance.

Scope:

• Methodology: Defines procedures for conducting non-instrumented Charpy impact tests on plastics using notched or unnotched specimens.
• Result Measurement: Results are expressed in terms of energy absorbed during fracture, normalized to the cross-sectional area of the specimen.
• Application to Thermoplastics and Thermosets: Suitable for both types of plastics, including filled or unfilled, reinforced or unreinforced materials.
• Environment Effects: Includes provisions for testing at different temperatures or environmental conditions.

Applications:

• Material Selection: Helps in selecting appropriate plastics for applications requiring impact strength.
• Quality Assurance: Used in manufacturing processes to ensure consistent material properties.
• Performance Evaluation: Assists in assessing how plastics perform under sudden impact conditions.
• Research and Development: Supports the development of plastic materials with improved mechanical properties.