Standard Test Methods for
Strength of Glass by Flexure (Determination of Modulus of
This standard is issued under the fixed designation C 158; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
Click below to download Astm C 158 – 02 pdf free
Click here to download Astm C 157/C 157M – 03 Pdf Free Download