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?"
To comply with JIS K 6251, testing facilities must follow specific protocols regarding specimen preparation and environmental conditions. 1. Specimen Shapes
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Tensile stress and elongation at the point where plastic deformation begins (applicable only to materials with a yield point). GlobalSpec Test Methodology & Equipment
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: Often referred to as "modulus" (e.g., 100% or 300% modulus), this measures the force required to stretch the material to a specific percentage.