Jis K 6251 Pdf Review

Rubber-like materials that can be melted and reprocessed. Essential Metrics Measured

The standard specifies several types of dumbbell-shaped test pieces. The most common are:

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. jis k 6251 pdf

The percentage of stretch achieved at the precise moment the specimen fractures.

Note: The official, valid version is now , which replaced the 2017 standard. Frequently Asked Questions Rubber-like materials that can be melted and reprocessed

Spend the $15. Download the official from the JSA. Use the correct dumbbell cutter (#3 is very common for soft rubber), set your machine to 500 mm/min, and test with confidence.

Typically, the test speed is 500 ± 50 mm/min (standard speed), though some standards may allow 200 mm/min. The current edition (2017) aligns closely with ,

The Japanese Standards Association (JSA) publishes and maintains the official English and Japanese editions.

Types 1, 2, 3, 4, 5, 6, and 7. Type 3 and Type 5 are common for general rubber testing. Ring Shapes:

of rubber. It is the primary benchmark used by manufacturers in Japan and international partners to ensure rubber components (like seals, hoses, and tires) can withstand mechanical stretching without failing. 2. Key Measurements Defined The standard focuses on four critical metrics: Tensile Strength ( cap T cap S