JIS K 6251 defines procedures for testing the tensile stress-strain properties of vulcanized or thermoplastic rubber, with the latest update being the 2023 version. It standardizes the measurement of tensile strength, elongation at break, and stress using dumbbell or ring test pieces in accordance with ISO 37. For a preview of the standard's content, see the JSA document. 日本規格協会 JSA GROUP Webdesk AI responses may include mistakes. Learn more JIS K 6251:2017, First English edition published in 2017-09
Insight: While JIS and ISO are nearly identical today, ASTM D412 die profiles (specifically Die C) are slightly different. This can result in slight variations in reported tensile strength due to stress concentration differences in the narrow section of the specimen. jis k 6251 pdf
If you only need general rubber tensile testing, ISO 37 is nearly identical (Japan adopted ISO 37 with minor editorial changes as JIS K 6251). ISO 37 PDFs are often easier to purchase legally via national standards bodies. JIS K 6251 defines procedures for testing the
: 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. If you only need general rubber tensile testing,
The standard outlines various test methods to evaluate the properties of vulcanized rubber, including: