ASTM D 1415 - 06 (Reapproved 2012) Standard Test Method for Rubber Property - International Hardness

Current edition approved Jan. 1, 2012. Published March 2012. Originally approved in 1956. Last previous edition approved in 2006 as D1415 – 06. — 7 p.
This test method covers a procedure for measuring the hardness of vulcanized or thermoplastic rubber. The hardness is obtained by the difference in penetration depth of a specified dimension ball under two conditions of contact with the rubber: (1) with a small initial force and (2) with a much larger final force. The differential penetration is taken at a specified time and converted to a hardness scale value.
This test method is technically similar to ISO 48.