Jis K | 6251 Pdf Link

JIS K 6251 is a technical standard published by the Japanese Industrial Standards Committee (JISC). It specifies the method for determining the tensile stress-strain properties of rubber materials. The test involves pulling a standardized specimen until it breaks, measuring the force applied and the elongation achieved throughout the process. Key Materials Covered

The American standard for rubber tension. While similar in objective, ASTM D412 uses different dumbbell designations (e.g., Die C) compared to JIS dumbbell numbering. Accessing the JIS K 6251 PDF

: If your customer accepts ISO 37, they will also accept JIS K 6251 without question. However, ASTM D412 is not interchangeable — for example, ASTM D412 allows a different gauge length (25 mm vs. 20 mm in ISO/JIS), which changes elongation values.

Maximum load, elongation at break, and load at specific extensions are recorded. JIS K 6251: 2010 vs. 2017 Updates jis k 6251 pdf

is a Japanese Industrial Standard titled "Rubber, vulcanized or thermoplastic – Determination of tensile stress-strain properties." It specifies the method for determining the tensile strength, elongation at break, stress at a given elongation, and other related properties of vulcanized rubber and thermoplastic rubber.

The percentage of stretch achieved at the moment of rupture. Elongation at a Given Stress:

Yes, it specifies the requirement for the testing apparatus's accuracy, including force, speed, and elongation measurement accuracy. Key Summary Table Description JIS K 6251 Latest Year Title JIS K 6251 is a technical standard published

The standard is critical for quality control in the automotive and construction industries. The current edition (2017) aligns closely with , marking a significant shift from older variations by introducing stricter requirements for testing apparatus and specimen alignment.

: The maximum stress a material withstands before rupture.

The reliability of the test depends heavily on the shape of the sample. JIS K 6251 defines several "dumbbell" shapes: Dumbbell Shapes: Key Materials Covered The American standard for rubber

An extensometer (optical, laser, or clip-on) tracks the distance between the gauge marks on the dumbbell piece to measure elongation without slipping interference. The machine records the continuous force-displacement loop until physical failure occurs. International Equivalents

JIS K 6251 is widely used across various sectors that rely on high-performance rubber components: Testing gaskets, seals, and hoses. Manufacturing: Evaluating industrial belts and rollers.

Typically, the test speed is 500 ± 50 mm/min (standard speed), though some standards may allow 200 mm/min.