CUSTOM COMPOUNDERS SINCE 1973

Polifil® GFN/MRN 6/6

GFN/MRN 66

Glass & Mineral Reinforced
Nylon 6/6

Polifil® GFN/MRN 6/6 reinforced series of compounds offer superior strength, rigidity and creep resistance. Glass fibers provide excellent thermal and dimensional stability while maintaining good heat and chemical resistance. Polifil® GFN/MRN are excellent candidates for bike components and fuel caps, as well as other automotive components. Standard processing techniques are applicable.

Use this information as a guide to aid you in selecting the proper resin for your application. TPG will custom compound and fine-tune our formulations for your application.

The property values listed in the PDF document(s) have been obtained using laboratory controlled test methods. They are offered without guarantee since conditions under which the product is used are beyond our control. Mold shrinkage is intended as a guide only, as specific shrinkage is affected by part design, mold design and molding conditions. Therefore, The Plastics Group disclaims any liability for loss or damage incurred in connection with the use of this product.


Physical
ASTM/
Method
Polifil®
628-13GF
Polifil®
628-33GF
Polifil®
71MR
Polifil®
78MRGF
Reinforcement content (%) TPG WI 13 33 40 40
Specific gravity D 792 1.22 1.38 1.50 1.45
Melt flow (g/10 min) D 1238 n/a n/a n/a n/a
Water absorption, 24 hours (%) D 570 1.1 0.75 0.6 0.7
Mold shrinkage - 1/8" specimen (in/in) D 955 0.005 0.003 0.003 0.002
Mechanical @ 73°F*          
Tensile strength (psi) D 638 14,000 24,000 12,800 18,000
Elongation @ yield (%) D 638 2 3 3 2
Elongation @ break (%) D 638 3 3 12 5
Tensile modulus (kpsi) D 638 740 1,400 700 1,000
Flexural modulus, tangent (kpsi) D 790 700 1,200 560 950
Flexural strength (psi) D 790 20,000 33,000 20,000 27,000
Izod impact, notched (ft-lbs/in) D 256 1.0 2.1 1.1 1.2
Gardner impact, 1/2" tup (in-lbs) D 5420 6 4 12 5
Rockwell hardness (R-scale) D 785 120 120 115 120
Thermal          
Deflection temperature, 66psi (°F) D 648 480 490 473 495
Deflection temperature, 264psi (°F) D 648 470 480 437 455

* all properties tested dry as molded