ASTM D5670
Standard Test Method for Rubber—Determination of Residual Unsaturation in Hydrogenated Nitrile Rubber (HNBR) by Infrared Spectrophotometry
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About This Item
ASTM D5670 is the standard test method for evaluating residual unsaturation in hydrogenated nitrile rubber (HNBR) by infrared spectrophotometry. It provides a practical way to assess a key chemical characteristic of HNBR materials, helping users better understand material consistency and processing history. For quality control, specification review, and product verification, this ASTM standard supports more reliable testing of rubber compounds where residual unsaturation may affect performance or conformity.
Overview of ASTM D5670
The official title of this standard identifies its purpose clearly: it describes an infrared spectrophotometry test method for measuring residual unsaturation in hydrogenated nitrile rubber. That makes ASTM D5670 relevant to laboratories and manufacturers working with HNBR who need a defined approach for comparing material samples. As an ASTM technical document, it is typically used to support repeatable testing practices, align internal methods with recognized requirements, and provide a consistent basis for material evaluation.
Common use cases of ASTM D5670
This standard is commonly used in laboratory testing and quality control workflows involving hydrogenated nitrile rubber. It may support incoming inspection, batch verification, or comparative analysis of HNBR materials supplied for rubber goods and related engineered applications. ASTM D5670 is also useful when a procurement or production team needs a recognized test method for assessing residual unsaturation by infrared spectrophotometry, especially when material consistency and technical documentation matter.
Benefits of using ASTM D5670
Using ASTM D5670 can improve consistency in testing and help reduce uncertainty when evaluating HNBR material characteristics. It supports more dependable communication between suppliers, buyers, and laboratories by referencing a recognized ASTM test method. For organizations focused on compliance, quality control, or product evaluation, the standard can help create a clearer basis for acceptance decisions and reduce risk tied to nonuniform test practices. ASTM D5670 also helps streamline procurement and specification review.
- Infrared spectrophotometry test method
- Residual unsaturation assessment for HNBR
- Supports laboratory consistency and repeatability
- Useful for quality control and verification
- Helps align technical testing with ASTM practice
- Publication Date: 2023-09-27
- Publisher: ASTM
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