ASTM C 965 : 1996 : R2017
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Standard Practice for Measuring Viscosity of Glass Above the Softening Point
Hardcopy , PDF
09-06-2023
English
03-11-2017
Important note : All end users must be registered with an Account prior to user licenses being assigned.CONTAINED IN VOL. 15.02, 2017 Defines the determination of the viscosity of glass above the softening point through the use of a platinum alloy spindle immersed in a crucible of molten glass.
| Committee |
C 14
|
| DocumentType |
Standard Practice
|
| Pages |
5
|
| ProductNote |
Reconfirmed 2017
|
| PublisherName |
American Society for Testing and Materials
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
1.1This practice covers the determination of the viscosity of glass above the softening point through the use of a platinum alloy spindle immersed in a crucible of molten glass. Spindle torque, developed by differential angular velocity between crucible and spindle, is measured and used to calculate viscosity. Generally, data are taken as a function of temperature to describe the viscosity curve for the glass, usually in the range from 1 to 106 Pa·s.
1.2Two procedures with comparable precision and accuracy are described and differ in the manner for developing spindle torque. Procedure A employs a stationary crucible and a rotated spindle. Procedure B uses a rotating crucible in combination with a fixed spindle.
1.3This 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.
1.4This 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.
| ASTM C 1351M :1996 : R2022 | Standard Test Method for Measurement of Viscosity of Glass Between 10<sup>4</sup> Pa·s and 10<sup>8</sup> Pa·s by Viscous Compression of a Solid Right Cylinder [Metric] |
| ASTM C 1350M : 1996 : R2019 | Standard Test Method for Measurement of Viscosity of Glass Between Softening Point and Annealing Range (Approximately 10<sup>8</sup> Pa·s to Approximately 10<sup>13</sup> Pa·s) by Beam Bending (Metric) |
| ASTM E 220 : 2019 | Standard Test Method for Calibration of Thermocouples By Comparison Techniques |
| ASTM E 220 : 2013 : REDLINE | Standard Test Method for Calibration of Thermocouples By Comparison Techniques |
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