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//ISO 2039-1:2001

ISO 2039-1:2001

Name: ISO 2039-1:2001 — Plastics — Determination of hardness — Part 1: Ball indentation method
SKU: ISO 2039-1:2001
Price: 25 EUR
Availability: InStock

Plastics — Determination of hardness — Part 1: Ball indentation method

Название (английский):

ISO 2039-1:2001

Plastics — Determination of hardness — Part 1: Ball indentation method

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 6
Дата публикации:: 6 декабря 2001 г.
Издание:: ISO IS 2039 edition 3 version 1
ICS:: 83.080.01

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Цена:25 €

Описание (английский):

This part of ISO 2039 specifies a method for determining the hardness of plastics and ebonite by means of a loaded ball indenter. The ball indentation hardness determined by this method may provide data for research and development, quality control and acceptance or rejection under specifications.

Abstract

Overview

ISO 2039-1:2001 specifies the ball indentation method for determining the hardness of plastics and ebonite. This internationally recognized standard by ISO provides a precise procedure to measure the hardness by pressing a loaded steel ball indenter into the material surface and calculating hardness based on the indentation. The results are essential for , , and to decide acceptance or rejection of plastic materials under defined specifications.

Key Topics

Scope and Principle The method applies to plastics and ebonite using a steel ball indenter of 5 mm diameter under specific loads. Hardness is calculated by the ratio of applied load to the contact area of the indentation. The indentation depth under load is measured with high precision, allowing the calculation of ball indentation hardness, expressed in newtons per square millimeter (N/mm²).
Testing Equipment Key apparatus includes a hardness testing machine with:
- A rigid frame and adjustable platform
- A polished, hardened steel ball indenter (5.0 ± 0.05 mm diameter)
- A high-precision depth measurement device (± 0.005 mm accuracy)
- A load application system free from impact or shock
- A timer with ±0.1 s precision to ensure consistent load duration
Specimen Preparation Test specimens typically are smooth plastic plates, around 20 mm by 20 mm and 4 mm thick. Parallel faces and sufficient area are required to avoid edge effects. When samples are thinner, stacking specimens is allowed with caution regarding potential result variation.
Testing Procedure
1. Condition specimens according to ISO 291 (standardized atmospheres).
2. Apply a small preload (approx. 9.8 N) to ensure contact.
3. Apply the main test load (49.0 N, 132 N, 358 N, or 961 N) smoothly over 2-3 seconds and maintain for 30 seconds.
4. Measure penetration depth under load, correcting for machine deformation.
5. Repeat for at least ten valid indentations to obtain reliable average hardness values.
Calculations and Reporting Ball indentation hardness (HB) is calculated using specific formulas involving corrected load and penetration depth. The standard also provides guidance on rounding results and detailed reporting requirements, including specimen details, testing conditions, and statistical data like standard deviation.

Applications

Material Research and Development Provides fundamental hardness data crucial for developing new plastics with desired mechanical properties.
Quality Assurance and Control Ensures consistent material behaviour by verifying hardness against specifications during manufacturing or before market release.
Compliance and Acceptance Testing Enables objective criteria for product approval or rejection based on hardness measurements.
Comparative Analysis Useful for comparing different grades or batches of plastics and ebonite materials under standardized test conditions.
Product Performance Evaluation Hardness data informs performance characteristics such as wear resistance, durability, and load-bearing capacity.

Related Standards

ISO 291:1997 – Plastics - Standard atmospheres for conditioning and testing
ISO 2039-2:2001 – Plastics - Determination of hardness - Part 2: Rockwell hardness test method
Other ISO standards on plastics mechanical properties, conditioning, and test methods addressing complementary material evaluation techniques.

Summary

ISO 2039-1:2001 defines a rigorous and standardized method-the ball indentation method-to accurately measure the hardness of plastics and ebonite. Applying this standard enhances reliability in material characterization, supports quality control processes, and fosters innovation in polymer development. Companies and laboratories testing plastic materials can leverage ISO 2039-1 to ensure consistent, repeatable, and recognized hardness measurements worldwide.

Технические детали

Технический комитет: ISO/TC 61/SC 2 - Mechanical behavior
SKU: ISO 2039-1:2001

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ISO 2039-1:2001

Abstract

Overview

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