D Standard Practice for Rubber—Standard Conditions for Testing standard temperature~ interlaboratory 2, $ Standard + Redline PDF Bundle. Apr 6, This standard is issued under the fixed designation D ; the number ASTM International takes no position respecting the validity of any. download ASTM D Standard Practice for Rubber-Standard Temperatures for Testing from SAI Global.
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Sep 9, D Practice for Rubber—Standard Temperatures for 1 These test methods are under the jurisdiction of ASTM Committee D11 on. astm d pdf nomenclature. 2. 45, and a durometer of less than about 60 per ASTM D Type A. Home; News & Analysis. Download with Google. News · SIGN IN / REGISTER. Back. Standards PDF Cover Page Document preview. Historical. ASTM D Content Provider ASTM International [ ASTM].
Summary of Test Methods compressive stresses in air or liquid media.
They are applicable particularly to the rubber used in machinery mountings, vibra- 3. Two test methods are covered as by a specified force and maintained under this condition for a follows: specified time and at a specified temperature. Test Method Section 3. Unless otherwise calculated according to Eq 1 and Eq 2. The actual stressing 1.
It is the the constant application of a known force, or the rapidly responsibility of the user of this standard to establish appro- repeated deformation and recovery resulting from intermittent priate safety and health practices and determine the applica- compressive forces. Though the latter dynamic stressing, like bility of regulatory limitations prior to use.
Referenced Documents tests. Therefore, compression set tests are considered to be 2. Tests are frequently conducted at elevated tempera- Testing2 tures. Test Specimens ing Standard Vulcanized Sheets2 5. The compression set of the Purposes from Products2 sample in Option 1 shall be the average of the two specimens D Practice for RubberMeasurement of Dimensions2 expressed as a percentage. The compression set of the sample D Practice for Determining Precision for Test Meth- in Option 2 shall be the median middle most value of the ods Standards in the Rubber and Carbon Black Industries2 three specimens expressed as a percentage.
Current edition approved Aug. Published September Originally approved in Last previous edition approved in as D Diameter, mm in. For such cases, the product specification be rotated in a drill press or similar device and lubricated by should define the specimen as to the size and shape.
If suitable means of a soap solution. A minimum distance of 13 mm 0.
The cutting pressure shall be as light as producer and the downloadr. Method A 5. NOTE 2It is suggested, for the purpose of uniformity and closer tolerances in the molded specimen, that the dimensions of the mold be 6.
Conditioning specified and shrinkage compensated for therein. A two-plate mold with a 6. When the mm 1. A similar mold after delivery by the producer of the article represented by the but having a cavity of 6. Specimens whose compression thickness than the one indicated in 5.
Precision and Bias 4 plying up cylindrical disks cut from a standard sheet prepared 7. A test result, thickness required. Such plies shall be smooth, flat, of uniform therefore, is the average of two test specimens, for both Test thickness, and shall not exceed seven in number for Type 1 Methods A and B.
Reference values do not exist for these test methods since the value or level of the test property is exclusively defined by the test method. Bias, therefore, cannot be determined. Loading, Test Method A 8.
The force may be applied in accordance with either means after the test specimen is mounted in the apparatus.
Either a calibrated compression machine or known masses may 8. Provision shall be made by the force shall be applied by a screw mechanism for compressing use of bolts and nuts or other devices to prevent the specimen a calibrated spring the proper amount.
The spring shall be of and spring from losing their initial deflections when the properly heat-treated spring steel with ends ground and per- external force is removed. The spring shall have essentially the pendicular to the longitudinal axis of the spring. A suitable same characteristics as described in 8. The spring shall required. A suitable compression device is shown in Fig. The have a chromium plated finish and shall be cleaned thoroughly curve obtained by plotting the forces against the corresponding and wiped dry before each test.
The slope is obtained by dividing shall be ground to a maximum roughness of m 10 in. In ordinary use, a time of manufacture or refurbishing as it is not a property that is easily weekly check of the dimensions shall show no greater change determined in the course of routine use.
The suitability for the use of the device is to be determined by the user. The preferred location is adjacent to the temperature measuring device listed in section 8. Procedure 9.
Place the specimen on the anvil of the dial micrometer so that the presser foot will indicate the thickness at the central portion of the top and bottom faces. If the calibrated spring device see Fig.
With the external loading device see Fig. Tighten the nuts and FIG. It is imperative that no additional force be applied in tightening the bolts.
For higher Temperatures temperature and time for the compression set, depending upon Type II A ovens are necessary. In comparative tests, use 8.
It is suggested that volume: the test temperature be chosen from those listed in Practice Interior size of air oven: D Suggested test periods are 22 h and 70 h. The min. Place the assembled compression device max. At the end of the test period, take chamber. Google Scholar 8. Conditioning plastics for testing. Google Scholar 9. Google Scholar Preferred test temperatures. Methods for maintaining constant relative humidity in small enclosures by means of aqueous solutions.
BS , Hygrometric tables for use in the testing or operation of environmental enclosures. Solid stem general purpose thermometers. Long solid stem thermometers for precision use. Short solid stem thermometers for precision use. Long stem enclosed scale thermometers for precision use. Short stem enclosed scale thermometers for precision use. Specification for laboratory thermometers.
BS Guide to selection and use of liquid in glass thermometers.Both repeatability and repro- defined by the test method. Maintain the conditions during the cooling period in accordance with 9.
This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years and if not revised, either reapproved or withdrawn. Keywords the original thickness, to, Start the Methods for maintaining constant relative humidity in small enclosures by means of aqueous solutions. Loading, Test Method A 8.