Ball indentation hardness

The ball indentation hardness is a test method for hardness testing of elastomers such. B. rubber . In the ISO 48 standard , this procedure is specified for the range between 10 and 98 international rubber hardness degrees (IRHD). The test is carried out using a constant force. The hardness is calculated from the difference in the penetration depth of a ball (indenter) with (a) a slight pre-force and (b) a defined main force.

When testing the hardness of elastomers and thermoplastic elastomers, there are four methods that differ in terms of the ball diameter and the force acting on them.

Individual evidence

^ Fritz Röthemeyer, Franz Sommer: Kautschuktechnologie , Carl Hanser Verlag Munich Vienna, 2nd edition, 2006, pp. 492–493, ISBN 978-3-446-40480-9 .

[Röthemeyer-1] Fritz Röthemeyer, Franz Sommer: Kautschuktechnologie , Carl Hanser Verlag Munich Vienna, 2nd edition, 2006, pp. 492–493, ISBN 978-3-446-40480-9 .