The most secure way to obtain the standard is through authorized standards bodies to ensure you are using the latest version. JIS K 6251:2023 Intertek Inform: JIS K 6251:2017/2023 Scribd: JIS K 6251 (2017)
While is based on ISO 37:2017 (Rubber, vulcanized or thermoplastic — Determination of tensile stress-strain properties), it is classified as "MOD" (Modified). This means that while they are generally interchangeable, slight differences in sample sizes (specifically the dumbbell shapes) may exist.
While older versions exist, the update brought the standard into closer harmony with ISO 37 (the international equivalent), improving the consistency of specimen dimensions and test speeds. Where to Find "JIS K 6251 PDF" jis k 6251 pdf
Major global standards resellers provide downloadable licensed PDFs of the current revision.
Medium-sized specimens optimized for smaller product samples. The most secure way to obtain the standard
Optical or non-contact laser extensometers are highly recommended. Contact-type extensometers can weigh down and prematurely tear the rubber. Test Procedure Steps
Do not risk your certification audit with a bad PDF. Here is the safe path: While older versions exist, the update brought the
Miniaturized micro-shapes explicitly detailed for instances where material is scarce, or samples must be harvested from complex finished components like automotive tires or hoses. Testing Equipment Requirements
The latest and most current version is , published on November 20, 2023. Professionals are strongly advised to use the most recent edition of a standard to ensure compliance with current best practices and regulatory requirements. While older versions like JIS K6251-1993 or JIS K6251-2004 are sometimes found as free downloads on unofficial websites, they are considered superseded and should not be used for new product certifications or quality control systems.
The standard specifies several types of dumbbell-shaped test pieces. The most common are: