ASTM D6147

ASTM D6147 is the ASTM standard for determining force decay, or stress relaxation, in compression for vulcanized rubber and thermoplastic elastomer materials. It provides a controlled way to evaluate how these materials retain load after being compressed, which is important for understanding sealing behavior, long-term performance, and product consistency. For buyers, engineers, and quality teams, this standard helps define a repeatable test approach for comparing materials and supporting informed material selection.

What is ASTM D6147?

ASTM D6147 is a test method focused on measuring force decay, also described as stress relaxation, when vulcanized rubber and thermoplastic elastomers are held under compression. The standard is used to observe how much compressive force is lost over time under specified conditions. That makes it a useful technical document for evaluating load retention behavior in elastomeric materials. ASTM D6147 supports consistent testing so results can be compared across products, suppliers, and quality programs.

Where is ASTM D6147 used?

This standard is commonly used wherever compressed rubber or thermoplastic elastomer parts must maintain force over time. Typical applications may include seals, gaskets, and other compression-loaded components where relaxation can affect performance. ASTM D6147 is relevant in material testing laboratories, product qualification workflows, and quality control settings that assess elastomer behavior under compression. It is especially useful when comparing candidate materials or verifying that a compound meets internal or customer performance expectations.

Why is ASTM D6147 important?

ASTM D6147 matters because force decay under compression can influence real-world performance, service life, and reliability. A standardized method helps reduce variability in testing and improves confidence when evaluating materials for procurement, specification compliance, or product development. By using a recognized ASTM standard, organizations can make more consistent decisions and better compare test results across different batches or suppliers. ASTM D6147 is therefore valuable for quality control and risk reduction in elastomer applications.

• Measures force decay in compression
• Applies to vulcanized rubber and thermoplastic elastomers
• Supports material comparison and qualification
• Useful for quality control and compliance testing
• Helps assess load-retention performance