Introduction

ASTM D 642 is a widely recognized standard developed by ASTM International, which provides a method for evaluating 

the compressive resistance of shipping containers, components, and unit loads. This test is crucial in the packaging and

 logistics industries to ensure that containers can withstand stacking and compressive forces during storage and 

transportation.

Testing instruments:SCT-E1 Packaging Pressure Resistance Tester

Test Procedure

The ASTM D 642 test involves the following key steps:

Sample Preparation

Select representative samples of the container or unit load.

Condition the samples at a standard temperature and humidity (as per ASTM D 4332) if necessary.

Test Setup

Place the test specimen on a compression tester (such as a universal testing machine).

Apply a compressive force at a controlled rate (typically 0.5 ± 0.1 inches per minute).

Force Application

Continuously apply force until the specimen collapses or reaches a predetermined deformation level.

Record the maximum load sustained before failure.

Data Analysis

Calculate the compressive strength and compare it against industry or customer requirements.

Evaluate deformation characteristics to assess structural integrity.

Significance of ASTM D 642

Quality Assurance – Ensures packaging meets strength requirements for safe transportation.

Cost Efficiency – Helps optimize material usage without compromising protection.

Regulatory Compliance – Many industries require adherence to ASTM standards for certification.

Performance Benchmarking – Allows comparison between different packaging designs.

Conclusion

ASTM D 642 is an essential test method for evaluating the compressive strength of shipping containers and unit loads.

 By following this standardized procedure, manufacturers can enhance packaging reliability, reduce damage risks, and

improve supply chain efficiency.

For accurate results, it is recommended to conduct testing in certified laboratories using calibrated equipment and 

trained personnel. Compliance with ASTM D 642 helps maintain high packaging standards in a competitive market.