If you are in the manufacturing industry or any other field that involves testing materials for their thermal properties, then ISO 75/1 is a term that should sound familiar. ISO 75/1 is an international standard used to determine the heat deflection temperature of plastics and other materials under load. This may seem like technical jargon, but understanding what it means and how it works can help you improve your products' quality and performance. In this blog post, we will discuss the five most important things you need to know aboutISO 75/1, its benefits, and how it works. So let's dive in!


ISO 75/1 is an international standard that specifies a method for determining the heat deflection temperature of plastics and other materials under load. The test measures how much heat a material can withstand before it begins to deform or lose its strength.

The ISO 75/1 testing procedure involves heating a sample of the material at a constant rate until it reaches a specified temperature. Then, weight is applied on top of the centre of the sample while keeping up with the said temperature. Once certain points are met during this process, we measure and record any deformation in the sample.

This test helps manufacturers understand how different materials react to high temperatures and loads, allowing them to make more informed decisions about which materials to use in their products.

ISO 75/1 plays an essential role in ensuring product quality by providing valuable information about thermal properties that affect performance.

ISO 75/1 is a testing standard that determines the heat deflection temperature of plastics. This measurement helps manufacturers to identify the maximum temperature a plastic material can withstand before it deforms under load, which is critical in selecting materials for high-temperature applications.

The benefits of ISO 75/1 are numerous. Firstly, by establishing an industry-wide standard for measuring heat deflection temperatures, manufacturers can compare and evaluate different plastic materials accurately. This helps ensure consistent quality control across various products and industries.

Secondly, using ISO 75/1 allows designers to select appropriate materials for specific applications based on their thermal properties. By understanding how different types of plastics respond to heat loads, they can choose those with optimal resistance to deformation at elevated temperatures.

Moreover, this information is essential in ensuring product safety as it prevents components from melting or warping when exposed to high temperatures during use. In summary, ISO 75/1 provides valuable data that enables manufacturers and designers alike to make informed decisions regarding material selection while enhancing product performance and safety.


ISO 75/1 is an international standard that sets the guidelines for determining the temperature at which a material starts to deform under load. It provides a standardized method of measuring and comparing materials' resistance to heat deformation, enabling manufacturers to ensure their products can withstand high temperatures.

By complying with ISO 75/1, companies can increase their competitiveness in the market by producing higher quality and more reliable products. This not only benefits businesses but also consumers who rely on these products for safety and performance.

ISO 75/1 works by subjecting samples of different materials to specific conditions specified in the standard and measuring their behaviour under load as temperature increases. By comparing results from multiple tests on various materials, manufacturers can determine which ones are suitable for use in high-temperature applications.

Understanding what ISO 75/1 is all about and its benefits will help you make better-informed decisions when selecting materials for your projects or manufacturing processes. So if you need assistance with testing your product's resistance to heat deformation or want to know more about compliance with this important standard, be sure to consult our experts today!

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