ASTM D0648-18

Standard Test Method for Deflection Temperature of Plastics Under Flexural Load in the Edgewise Position

ACTIVE

About this standard

Languages
English
Type
ASTM
Status
ACTIVE
Publication date
01 April 2018
Withdrawn Date

About this training

Summary

< div class=" SectionLevel2" > < p class=" subsec1 cdone2" > < span class=" Head3 cdone" > 1.1< / span> & #x00a0 This test method covers the determination of the temperature at which an arbitrary deformation occurs when specimens are subjected to an arbitrary set of testing conditions.

< / div> < div class=" SectionLevel2" > < p class=" subsec1 cdone2" > < span class=" Head3 cdone" > 1.2< / span> & #x00a0 This test method applies to molded and sheet materials available in thicknesses of 3 mm (1/ < sub> 8< / sub> & #x00a0 in.) or greater and which are rigid or semirigid at normal temperature.

< div style=" text-align:left " class=" NoteLevel1" >

< span class=" note cdone" style=" text-transform: uppercase " > Note 1:< / span> & #x00a0 < span class=" note cdone" > Sheet stock less than 3 mm (0.125 in.) but more than 1 mm (0.040 in.) in thickness may be tested by use of a composite sample having a minimum thickness of 3 mm. The laminae must be of uniform stress distribution. One type of composite specimen has been prepared by cementing the ends of the laminae together and then smoothing the edges with sandpaper. The direction of loading shall be perpendicular to the edges of the individual laminae.< / span>

< / div> < / div> < div class=" SectionLevel2" > < p class=" subsec1 cdone2" > < span class=" Head3 cdone" > 1.3< / span> & #x00a0 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.

< / div> < div class=" SectionLevel2" > < p class=" subsec1 cdone2" > < span class=" Head3 cdone" > 1.4< / span> & #x00a0 Some older machines still use mercury-in-glass thermometers. (< span class=" overriddenformat" style=" font-style:normal font-weight:bold " > Warning& #x2014 < / span> < span class=" overriddenformat" style=" font-style:italic font-weight:normal " > Mercury has been designated by many regulatory agencies as a hazardous material that can cause serious medical issues. Mercury, or its vapor, has been demonstrated to be hazardous to health and corrosive to materials. Caution should be taken when handling mercury and mercury containing products. See the applicable product Safety Data Sheet (SDS) for additional information. Users should be aware that selling mercury and/ or mercury containing products into your state or country may be prohibited by law.< / span>

< / div> < div class=" SectionLevel2" > < p class=" caveat cdone2" > < span class=" Head3 cdone" > 1.5< / span> & #x00a0 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.

< / div> < div style=" text-align:left " class=" NoteLevel1" >

< span class=" note cdone" style=" text-transform: uppercase " > Note 2:< / span> & #x00a0 < span class=" note cdone" > The text of this standard references notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.< / span>

< / div> < div style=" text-align:left " class=" NoteLevel1" >

< span class=" note cdone" style=" text-transform: uppercase " > Note 3:< / span> & #x00a0 < span class=" note cdone" > This standard and ISO 75-1 and ISO 75-2 address the same subject matter, but differ in technical content, and results shall not be compared between the two test methods.< / span>

< / div> < div class=" SectionLevel2" > < p class=" WTOcaveat cdone2" > < span class=" Head3 cdone" > 1.6< / span> & #x00a0 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.

< / div>