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HARDNESS SHORE A MEASUREMENTS ACCORDING TO ISO 7619-1


Hardness ShA measurements according to the standard ISO 7619-1 are performed by the table instrument from the producer Zwick. The required specimen thickness is at least 6 mm, while the allowed thickness may be composed from maximum three layers of the same material. The depressing time of the curtailed measuring cone is set automatically, usually to 3 s or 15 s. Hardness of finished products, e.g. window profiles, is measured by manual instruments.

 

Shore A hardness tester (right) and  microhardness IRHD tester (left) Hardness measurement of vulcanized rubber specimen by Shore A hand tester Microhardness IRHD tester (needle tip detail)

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