JIS K 6251 is a Japanese Industrial Standard (JIS) that specifies the method for determining the tensile properties of vulcanized rubber and thermoplastic rubber.
Simply put, it is the standardized test method used to answer the question: "How strong is this piece of rubber, and how far can it stretch before it breaks?" jis k 6251 pdf
The standard outlines the procedure for using a tensile testing machine to measure key properties, including: JIS K 6251 is a Japanese Industrial Standard
NITE provides free, read-only access to JIS standards via the JIS Search Service. However, printing, saving as PDF, or copying is disabled. This is ideal for reference but not for internal distribution to your testing lab. Pro Tip : If you work for a
Pro Tip: If you work for a Japanese subsidiary or a company with a JSA membership, you may already have intranet access to the entire JIS library.
| Parameter | Symbol | Description | |-----------|--------|-------------| | Tensile Strength | Tb | Maximum stress sustained by the test piece during stretching | | Elongation at Break | Eb | Maximum extension at the point of rupture | | Stress at Given Elongation | Modulus | Stress required to achieve a specific elongation (e.g., 100%, 300%) | | Yield Stress | – | Stress at which there is a clear deviation from elasticity |