COLD TEMPERATURE IMPACT VALUES FOR REINFORCED THERMOPLASTICS


WHILE THERE IS A SIGNIFICANT AMOUNT OF DATA THAT DEFINES THE BEHAVIOR OF THERMOPLASTICS AT ROOM TEMPERATURE AND ELEVATED TEMPERATURES, THE SAME IS NOT TRUE FOR LOW TEMPERATURES. A PLASTIC MATERIAL IS CONSIDERED TO BE "TOUGH" IF ITS UNNOTCHED IZOD STRENGTH (ASTM D 256) AT ROOM TEMPERATURE IS 15 FT-LB/IN. OR GREATER. THE TENSILE IMPACT TEST (ASTM D 1822) VALUES OF 50 FT-LB/IN2 OR HIGHER ALSO QUALIFY PLASTICS AS "TOUGH" MATERIALS.

RESIN GF CF IMPACT STRENGTH
NOTCHED
 IMPACT STRENGTH
UNNOTCHED
 TENSILE IMPACT
STRENGTH
% % 73F -40F 73F -40F 73F
ABS 30 0 1.5 1.4 10.0 6.9 35
POLYSULFONE 30 0 1.6 1.4 12.3 10.6 65
POLYCARB 10 0 2.3 0.6 23.0 21.0 70
POLYCARB 20 0 3.2 2.5 20.0 20.0 63
POLYCARB 30 0 3.4 2.7 20.0 20.0 72
NYLON 6 30 0 2.2 2.1 19.0 18.0 92
NYLON 6/6 30 0 2.0 1.5 17.5 13.5 84
NYLON 6/10 30 0 2.5 2.0 20.0 17.5 100
NYLON 6/6 0 30 1.6 1.3 14.0 13.0 70
ST NYLON 10 0 5.0 0.8 17.0 16.0 80
ST NYLON 20 0 4.8 2.4 21.0 21.0 86
ST NYLON 30 0 4.6 3.0 22.0 22.0 90
ST NYLON 0 10 4.3 1.2 16.0 16.0 55
ST NYLON 0 30 3.3 1.5 18.0 17.5 62
POLYURETHANE 30 0 9.5 1.9 40.0 15.1 96
ACETAL (CO) 30 0 1.8 1.6 10.5 10.2 42
POLYPRO (CO) 10 0 3.0 1.2 10.5 12.4 35
POLYPRO (CO) 20 0 3.2 1.8 13.0 15.0 45
POLYPRO (CO) 30 0 3.4 2.1 14.5 16.2 57
POLYPRO 30 0 1.9 2.0 12.5 14.3 55
POLYESTER-PBT 30 0 2.5 2.7 18.0 16.0 35



GF = GLASS FIBER CF = CARBON FIBER (CO) = COPOLYMER ST = SUPER TOUGH

CONCLUSION: THE "TOUGHEST" LOW TEMPERATURE MATERIALS ARE GLASS REINFORCED ST NYLONS (CRYSTALLINE) AND GLASS REINFORCED POLYCARBONATE (AMORPHOUS).


[Return to Materials Archive]

THE PLASCO NETWORK is published by PLASCO INC. information contained in the newsletter has been taken from sources which we deem reliable. we cannot assure its accuracy. any opinions expressed reflect our judgment and are subject to change. all rights reserved. reproduction or copying in any form, requires written permission from PLASCO INC. M. LODICO -editor