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ASTM D1155-10(2020)
Standard Test Method for Roundness of Glass Spheres
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NORM herausgegeben am 1.6.2020
Informationen über die Norm:
Bezeichnung normen: ASTM D1155-10(2020)
Ausgabedatum normen: 1.6.2020
SKU: NS-997550
Zahl der Seiten: 5
Gewicht ca.: 15 g (0.03 Pfund)
Land: Amerikanische technische Norm
Kategorie: Technische Normen ASTM
Kategorie - ähnliche Normen:
Die Annotation des Normtextes ASTM D1155-10(2020) :
Keywords:
roundness, glass spheres,, ICS Number Code 81.040.30 (Glass products)
Ergänzende Informationen
| Significance and Use | ||||||||
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4.1 The roundness of glass spheres is one measurable aspect relating to their performance as a retroreflective media. The function of this test method is to measure the percent of true spheres as related to compliance with applicable specifications. Note 1: This method has been used in other industrial areas
outside the intended scope of this test method.
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| 1. Scope | ||||||||
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1.1 This test method2 covers the determination of the percent of true spheres in glass spheres used for retroreflective marking purposes and industrial uses. 1.2 This test method includes two procedures as follows: 1.2.1 Procedure A, in which the selected specimen is split into two size ranges or groups prior to separation into true spheres and irregular particles, and 1.2.2 Procedure B, in which the selected specimen is split into five size ranges or groups prior to separation. 1.2.3 In determining compliance with specification requirements, either Procedure A or Procedure B may be used. Where tests indicate failure to meet the specified percent of true spheres and irregular particles, the referee test shall be made in accordance with Procedure B. 1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. |
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| 2. Referenced Documents | ||||||||
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