Quality of buckle matters

Quality of buckle affects your safety! 5 major test methods of buckle that keep you safe!

Does quality of buckle matter? Imagine that the buckle suddenly breaks during rock climbing, or the buckle of the helmet suddenly breaks while riding a motorcycle. The consequences are really unimaginable! A good buckle is not only beautiful, but also practical and functional. This article will tell you the quality requirements of the buckle, so that you can use it safely…


Quality of buckle – 

1. Buckle tensile strength test:

– Tensile testing of both strap & buckle assemblies to ultimate strength/failure.
– Shock testing of mated strap-buckles.
– Load Drop force testing of mated strap-buckles.
– Durability test: Keep opening and closing the buckle to test whether the buckle will be deformed.

Buckle tensile strength test

<Tensile strength testing Machine>

Buckle tensile strength test

<Buckle tensile strength Test>

2. Buckle temperature test:

Test the endurance of the fastener at high temperature and low temperature.

1. High temperature: set the temperature at 70 degrees Celsius, and observe that the buckle has no deformation
2. Low temperature: Set the temperature to minus 30 degrees. And observe whether the buckle is deformed, and test the change in the strength of the buckle.

3. Buckle chemical test:

Plastic buckles, like other plastic products, must be regularly tested for toxic substances. Chemical testing of plastic or polymer materials can provide valuable information about the additives used and other substances present, which is important when trying to understand the properties of the material. The additives especially affect the polymer physical properties, stability/stability and general durability of the polymer material throughout its life cycle. Chemical testing can also help us understand the presence of other substances in plastic products, including catalyst residues and volatile organic pollutants (VOC).The relevant international standards include RoHS and REACH.

4. Buckle salt spray test:

Test the salt resistance of the buckle to ensure that the quality of the buckle will not be affected when it is transported by sea.

5. Other buckle tests:

Such as anti-acid, anti-rust, anti-corrosion, etc. We recommend that you choose a test method suitable for your product according to the purpose of the final product.

Other international testing standards for buckles

1. ASTM D4831 – 00(2020) Standard Test Method for Buckle Tear Strength of Leather

This test method is designed to measure the force required to tear the leather fixed in the buckle, which can be used as a reference for the tear strength of leather. This test method can be applied to bulk cargo inspection, design purpose, production quality control, development and research. The thickness of the sample and the direction of the tear test will affect the correctness of the test results. This standard is not intended to solve all the safety issues related to its use. Users are responsible for using their products in an appropriate safe environment and determining the quality and strength of the buckle before use.

Buckle tensile strength<Buckle Tear Strength of Leather>

2. ANSI/ASSE Z359.1-1992 Fall Protection Code

This standard was formulated in 1992. At that time, there was no relevant test standard stipulating common fall protection equipment and methods in the workplace. According to the US Bureau of Labor Statistics (BLS), there were 600 work-related falls that resulted in deaths that year. ANSI/ASSE Z359.1-1992 has made great progress in solving personal fall protection equipment and methods to prevent falls. It stipulates the type and quality requirements of full-body safety belts and other equipment, and requires the use of automatic closing and self-locking spring hooks. Despite ANSI/ASSE Z359.1-1992, fatal falls in the workplace have continued to increase almost every year, which means that Z359.1-1992 still has room for revision.

Buckle pulling test

We recommend testing buckles without webbing, in a straight line (direct pull), in line with the Z359.1 ANSI Standard. This method gives an accurate, genuine measure of strength. Some manufacturers test the buckles as part of webbing loop which can give misleading results.

If you have special testing or quality requirements for the buckle, please feel free to contact us!


~The end~

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