ASTM Standards

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ASTM International develops globally recognized standards that ensure quality, safety, and performance across various industries. In injection molding, ASTM standards provide precise guidelines for producing and testing plastic specimens, ensuring consistency and reliability in material evaluation. Adherence to these standards is crucial for manufacturers aiming to validate material properties, meet regulatory requirements, and maintain product integrity.

This standard specifies methods for determining the tensile properties of plastics, including tensile strength, modulus of elasticity, and elongation at break. It is essential for assessing a material's behavior under tensile stress. ​

ASTM D790 outlines procedures for measuring the flexural properties of plastics using a three-point bending test. It determines flexural strength and modulus, which are critical for applications involving bending loads. ​

This standard describes the method for assessing the impact resistance of plastics using the Izod impact test. It measures the energy absorbed by a notched specimen during fracture, indicating the material's toughness. ​

ASTM D695 specifies a method for determining the compressive properties of rigid plastics, including compressive strength and modulus. It is vital for applications where materials are subjected to compressive forces. ​

This standard covers the determination of the temperature at which a plastic specimen deforms under a specified load, indicating its heat resistance. ​

ASTM D6110 outlines the method for measuring the impact resistance of plastics using the Charpy impact test. It assesses the material's ability to withstand sudden impacts.

This standard provides procedures for measuring the shrinkage of thermoplastics from mold cavity dimensions to molded part dimensions, which is crucial for precision molding. ​

ASTM D1525 specifies a method for determining the temperature at which a plastic specimen softens under a specified load, indicating its heat-softening characteristics. ​

This standard covers the determination of the relative rate of water absorption by plastics when immersed, which affects dimensional stability and mechanical properties. ​