+-----------------------------------------------------------------+ | Universal Testing Machine | | (Constant rate of traverse via JIS K 6272) | +-----------------------------------------------------------------+ | v +-----------------------------------------------------------------+ | Pneumatic or Pantograph-Type Grips | | (Tighten automatically as rubber thins under tension) | +-----------------------------------------------------------------+ | v +-----------------------------------------------------------------+ | Long-Travel Extensometer | | (Contact-less/Laser or Soft-Material Contact Tracking) | +-----------------------------------------------------------------+ JIS K 6251:2017, First English edition published in 2017-09
These parameters provide a complete picture of how a rubber product will behave under mechanical stress, helping to predict its performance in real-world applications such as seals, tires, hoses, and vibration dampeners.
Rubber, vulcanized or thermoplastics - Determination of tensile stress-strain properties ISO 37 (MOD) Sample Shapes Dumbbells (1, 2, 3, 4, 5) or Rings Main Output Tensile Strength, Elongation, Tensile Stress jis k 6251 pdf
Standard large-sized specimens often used for high-accuracy reference testing.
The stress required to stretch the test piece to a specific percentage (typically 100%, 200%, or 300%). Importance of the JIS K 6251 Standard Importance of the JIS K 6251 Standard The
The standard has undergone several revisions to maintain technical relevance:
Rubber materials are everywhere in modern industry—automotive tires, sealing gaskets, vibration dampers, conveyor belts, hoses, medical devices, and consumer goods all rely on rubber's unique combination of strength and stretchability. Core Content of the Standard Organizations may have
of vulcanized and thermoplastic rubbers. The latest active version is JIS K 6251:2023 , which replaces the 2017 edition. Core Content of the Standard
Organizations may have access to these standards through technical document libraries like IHS Markit or similar engineering standards platforms.
specifies the methods for determining the tensile strength , tensile stress , tensile strain , elongation at break , and tensile energy absorption of vulcanized and thermoplastic rubbers.
This article provides a comprehensive overview of the standard, its requirements, and where to find the documentation. What is JIS K 6251?