AMS 2431/1 and 2431/2 specifications both deal with cast steel shot media, which is round in shape and should be very easy to screen using the describe test method included in the two specifications. As manufactures of cast steel shot we have determined that sizes 280 and finer, down to 070 should be Ro-taped for 10 minutes and sizes 330 and larger 5 minutes.
This critria is based on test methods described in the ASTM STP 447M which has been replaced with MNL 32 and current use at Ervin Laboratorys using eight inches stainless steel test sieves. I would recommand the purchase of this Manual on Test Sieve Methods for anyone involved with sieveing materials.
Dennis Scharer
Techenical Services Manager
Ervin Industries
