ASTM D Valid from. 01/07/ Information provider. American Society of Testing and Materials. Author. American Society of Testing. ASTM D Standard Test Method for Rubber-Deterioration in an Air Oven. ASTM D Standard Test Method for Rubber—Deterioration in an Air Oven.
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For those blacks where 75 parts are used, the calculated specic gravity is 1. View About Us Join the Team.
The selection of suitable intervals of aging will depend on the rate of deterioration of the particular material being tested. Features Natural rubber, black, 80 Shore A, wear resistant.
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Mechanical, Physical and Chemical Properties. Precision and Bias 4 Signicance and Use 4.
ASTM D573 – 04(2015)
We’re sorry, there was an error trying to send your message. For instance, high-sulfur compounds should not be aged with low-sulfur compounds and those containing antioxidants shall not be aged with those having no antioxidants. This test method may, however, be used to evaluate rubber compounds on a laboratory comparison basis.
Some migration is known to occur. Number of Test Specimens 8. If the results are below the specied requirements, two additional specimens shall be prepared from the original sample and tested. This standard has been approved for use by agencies of the Department of Defense.
In atm work, it is desirable to use a range of periods, while for routine tests of known materials, fewer intervals may be asttm. Physical Tests of Aged Specimens A number in parentheses indicates the year of last reapproval. When a motor-driven fan is used, the air must not come in contact with the fan motor brush discharge because of danger of ozone formation. View Resources Brochures and catalogs.
If possible, avoid simultaneous aging of a mixed group of different compounds.
For specic precautionary statement, see Note 1. Originally approved in Weigh ingredients to nearest 0. The preferred location is adjacent to the recording thermometer. Both repeatability and reproducibility are short term, a period of a few days separates replicate test results.
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ASTM D Rubber – Deterioration in an Air Oven
Apply the gage lines to the specimens for wstm in measuring elongations. In determining the physical properties after aging, the nal values shall be the median of results from three specimens except that under the following conditions two additional specimens shall be exposed and tested and the median of the values for the ve specimens shall be used: Please see Annex A1 for more details on this work. Asfm any adjustments for example, to thickness are necessary, they should be performed prior to exposure.
Carry on browsing if you’re happy with this, or find out how to manage cookies and read our Privacy notice. The appropriate value is that value of r or R associated with a mean level in the precision tables closest to the mean level under consideration at any given time, for any given material in routine testing operation. View Cases Fine wines.
ASTM D573 Rubber – Deterioration in an Air Oven
With rapid aging types of rubber or those containing or contaminated by certain oxidizing chemicals, the rate of oxidation may be catalyzed to such an extent as to become violent with increasing temperatures. Advantages Good shock impact, tear, and abrasion resistance Good heat and ageing resistance Noise and vibration propagation reduction Protection against corrosion High rigidity combined with high flexibility ensuring a perfect reinforcement of the rubber blade and a low noise operation when used for snow ploughs application.
Located in the upper central portion of the chamber near the center of the aging specimens. Should the results of either of these tests be below the specied requirements, the sample shall be considered to have failed to meet the specications. Gage lines used for measuring elongation shall be applied after the specimens have been aged. Current edition approved July 1, Summary of Test Method 3. Intervals frequently used are 3, 7, and 14 days.