Home Ask The Expert Harry answers your questions.... Harry, how much time do I have to fill the Melt Indexer Barrel and start the test in a Method A Test. I have heard 60 Seconds to fill and then wait 300 Seconds or 420 Seconds. What is the proper procedure?

Ask The Expert

Ask The Expert
Free Access to Plastic Material Datasheets

RSS Feed

Favourites Create PDF Email Print

Ask The Expert

Harry, how much time do I have to fill the Melt Indexer Barrel and start the test in a Method A Test. I have heard 60 Seconds to fill and then wait 300 Seconds or 420 Seconds. What is the proper procedure?

Author:
Tap Water
Date added:
Wednesday, 22 August 2007
Last revised:
Thursday, 23 August 2007
Hits:
518
Rating:
 
Vote for this:
Good - Bad
favoured:
0 Favour

Answer

ASTM requires the operator to fill the bore, insert the piston and start the test within a minute. As soon as it is finished, the test is started on the machine and the preheat countdown begins. Generally, ASTM D1238 requires 420 seconds +/- 30 seconds for the pre-heat period but that can be overruled in the materials specification if there is one.

Category

Harry answers your questions....