NYLENE 721
TECHNICAL DATA SHEET

 
General Description    

  • Medium-impact modified nylon for fast, easy molding
  • Parts molded from 721 have good impact strength right out of the mold without post conditioning
  • Suitable for applications such as clips, fasteners, and other parts where some initial flexibility and impact resistance is desired
  • Cylinder temperatures should be in the 450°F-500°F range.
 

Properties   

Physical Properties
Test Method
Units
Dry as Molded
Specific Gravity
D792
1.10
Mold Shrinkage
in/in
0.014
 
Mechanical Properties
Test Method
Units
Dry as Molded
Tensile Strength
D638
psi MPa
9,000 (62)
Elongation at Break
D638
%
200
Flexural Modulus
D790
psi MPa
315,000 (2170)
Notched Izod @ 23 °C
D256
ft. lb./ in. J/m
3.0 (160)
Notched Izod @ -40 °C
D256
ft. lb./ in. J/m
0.5 @ -40 27 @ -40
 
Thermal Properties Test Method Units
Dry as Molded
DTUL @ 264 psi/1.82 MPa
D648
°F °C
145 (63)
DTUL @ 66 psi/0.45 MPa
D648
°F °C
338 (170)
Melt Point
D3418
°F °C
430 (221)
 
Testing conducted on dry-as-molded specimens at 73°F
 
Notes
All values are for dry as molded specimens. The data set forth herein has been carefully compiled by Polymeric Resources Corporation. Values shown are typical properties and are not for specification. Since processing variables will affect properties, the reproducibility of our data in a customer's facility is not guaranteed. There is no warranty of any kind either expressed or implied, applicable to the use of this information, and the user assumes all risk and liability in connection therewith.



Issued: 2009/09/23