ASTM-C598 Standard Test Method for Annealing Point and Strain Point of Glass by Beam Bending

ASTM-C598 - 1993 R13 EDITION - CURRENT
Show Complete Document History

Document Center Inc. is an authorized dealer of ASTM standards.
The following bibliographic material is provided to assist you with your purchasing decision:

Standard Test Method for Annealing Point and Strain Point of Glass by Beam Bending
ORDER

Price:

$46.00        

Scope

1.1 This test method covers the determination of the annealing point and the strain point of a glass by measuring the rate of midpoint viscous bending of a simply loaded glass beam.2 However, at temperatures corresponding to the annealing and strain points, the viscosity of glass is highly time-dependent. Hence, any viscosities that might be derived or inferred from measurements by this procedure cannot be assumed to represent equilibrium structural conditions.

1.2 The annealing and strain points shall be obtained following a specified procedure after direct calibration of the apparatus using beams of standard glasses having known annealing and strain points such as those supplied and certified by the National Institute of Standards and Technology.3

1.3 This test method, as an alternative to Test Method C336 is particularly well suited for glasses that for one reason or another are not adaptable for flame working. It also has the advantages that thermal expansion and effective length corrections, common to the fiber elongation method, are eliminated.

1.4  The values stated in metric units are to be regarded as the standard. The values given in parentheses are for information only.

1.5 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 and health practices and determine the applicability of regulatory limitations prior to use.

Keywords

ICS Number Code 81.040.10 (Raw materials and raw glass)

To find similar documents by ASTM Volume:

15.02 (Glass; Ceramic Whitewares)

To find similar documents by classification:

81.040.10 (Raw materials and raw glass)

This document comes with our free Notification Service, good for the life of the document.

This document is available in either Paper or PDF format.

Document Number

ASTM-C598-93(2013)

Revision Level

1993 R13 EDITION

Status

Current

Modification Type

Reapproval

Publication Date

Oct. 15, 2013

Document Type

Test Method

Page Count

5 pages

Committee Number

C14.04