This standard specifies a method for measuring the temperature at which half the number of test specimens used is destroyed when struck under specified conditions, or the lowest temperature at which no fracture behavior of the rubber material is observed. Therefore, brittleness is determined by the test conditions and especially the speed of the blow. The embrittlement temperature determined by this test is not necessarily related to the lowest temperature at which the material will be used, as it is influenced by Therefore, the results obtained by this method should be used to predict the behavior of rubber only at low temperatures, where the deformation conditions are similar to those specified in the test. Three test procedures are described:
——Procedure A, Determination of brittle temperature - Procedure B, Determination of the brittleness temperature at which 50% failure occurs - Procedure C, Impact of test specimen at specified temperature Procedure C is used for classification and specification purposes of rubber materials.?
KS M ISO 812:2014 history
2019KS M ISO 812:2019 Rubber, vulcanized or thermoplastic —Determination of low-temperature brittleness
2014KS M ISO 812:2014 Rubber, vulcanized or thermoplastic — Determination of low-temperature brittleness
2009KS M ISO 812:2009 Rubber, vulcanized or thermoplastic-Determination of low-temperature brittleness