ASTM D642 Compression Testing of Shipping Containers, Components and Unit Loads
ASTM D642 covers compression tests on shipping containers, components, or both. As an ISTA and ISO 17025 certified lab, we realize the importance of ASTM D642 transit compliance testing and help guide companies through the process.
Keystone’s accurate test reports are delivered quickly. We are in constant communication throughout the entire test process. Keystone Package Testing partners with customers to achieve package compliance. Thus, our proven process helps avoid product launch delays.
Request a quote to see why so many companies partner with Keystone Package Testing. Have a question about ASTM compressive resistance integrity testing? Contact us and we will determine the best course of action.
Summary of ASTM D642 Package Integrity Compression Testing
As mentioned above, this standard test method covers compression testing on shipping containers and/or components. Compressive resistance load testing is used to evaluate how unit loads successfully survive compressive forces during storage and distribution. Constant load testing is referred to in ASTM D4577.
The standard fulfills the requirements of the International Organization for Standardization (ISO) Test Method 12048.
ASTM D642 compressive resistance testing is determined with either fixed- or swiveled-platen-type testing machines. However, this standard requires a fixed-compression machine to perform specific sample orientation test methods. That being said, unit loads are generally only in the top-to-bottom orientation.
Scope of ASTM Compressive Resistance Regulatory Compliance Testing
Shipping containers are tested with or without contents. The procedure is used for measuring the ability of the container to resist external compressive loads. These loads may be applied to its faces, to diagonally opposite edges, or to corners. In addition to individual shipping containers, ASTM D642 covers testing of multiple containers or units loads, also.
The test method of applying compressive strength compares characteristics of a given design of a container. ASTM D642 can also compare the characteristics of containers differing in construction.
Test specimens are conditioned prior to or during testing. When no conditioning requirements are given, Keystone recommends conditioning the specimen in accordance with ASTM D4332. Moisture content determination may be carried out for moisture-sensitive materials at the time of the test to confirm test effects of conditioning.
ASTM D642 Transportation Compression Testing Procedures
First, the specimen is centered on the lower platen of the testing machine in the desired orientation. This is done so as not to incur eccentric loading.
Next, the platens are brought into contact with the specimen. For single-wall corrugated containers, an initial force or pre-load of 50lbf on the specimen is recommended. For double or triple wall boxes, pre-loads of 100lbf and 500lbf, respectively, are recommended.
After the pre-load has been applied, a fixed platen machine is used for tests where loads are applied on specimen edges or diagonal corners. Either fixed-platen or swivel-platen machines are used for face-to-face compressive tests.
If the testing machine is not fitted with a load-deformation recorder, record the test load for every 0.1 inches. A load with a continuous motion is applied at a speed of 0.5 inches until failure or a specific load has been reached.
Expert ASTM D642 Compressive Load Package Testing Laboratory
Keystone has a full lab of test equipment which permits us to provide short lead times on scheduling. Our team strives to give our customers more time and energy on product development instead of testing. In addition to ASTM D642 testing, Keystone has a full scope of expertise including vibration, accelerated aging, and leak penetration.
Contact us to learn firsthand why so many companies partner with Keystone Package Testing to achieve their regulatory ASTM certification needs. Request a quote to receive testing services customized to your specific requirements.
For more referenced ASTM standards and similar testing, please follow the links below:
- ASTM D996 Terminology of Packaging and Distribution Environments
- ASTM D4169 Practice for Performance Testing of Shipping Containers and Systems
- ASTM D4332 Practice for Conditioning Containers, Packages, or Packaging Components for Testing
- ASTM D4577 Test Method for Compression Resistance of a Container Under Constant Load
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