Mechanical properties describe the behavior of a material, e.g. adhesive, under mechanical stress. These include, for example, elongation, breaking strength, hardness and modulus of elasticity. Knowledge of these properties is crucial for the design and selection of adhesives in various applications.

These properties vary depending on the adhesive type and can be influenced by factors such as temperature, humidity and aging. Accurate knowledge of an adhesive's mechanical properties is critical to the design and manufacture of components and products to ensure their performance, durability and reliability.

Therefore, mechanical properties are determined through various tests and testing procedures to ensure that the adhesive used meets the requirements of the application. Knowledge and consideration of the mechanical properties of adhesives is therefore an important factor in the development and selection of adhesive connections.