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Visit Zeus Inc. for Fluoropolymer Tubing
A. Schulman Gapex® HPP40GR27BK 40% Fiberglass/Mineral Reinforced, Chemically-Coupled, Homopolymer Polypropylene
Categories: Polymer; Thermoplastic; Polypropylene (PP); Polypropylene, Glass/Mineral Reinforced

Material Notes: 40% Fiberglass/Mineral Reinforced, Chemically-Coupled, Homopolymer Polypropylene

Description: Black

Comments:
Testing and measurements were performed at 73 ± 3°F and 50± 5% relative humidity unless otherwise noted.
Filler Content: 39.5%; ASTM D2584
Material Pre-dry: Normally it is not necessary to pre-dry this material. However, if conditions dictate drying to optimize material properties and part appearance then dry in a desiccant dryer at 180°F for 2-3 hours or 160°F for >4 hours.
Manifolds: Maintain manifolds, runners and tips 10 to 20°F above the front one temperature to allow easier filling. (Gate drool is best eliminated using screw decompression rather than reducing tip temperature.)
Back Pressure (Range): 20-50 psi. Injection Speed: medium to slow > depending on surface appearance. Screw Speed: medium. Injection Pressure: Adjust to just above a short shot. Injection Time: Adjust to just above a short shot- Weigh pars for consistent packing. Cushion (Range): 0.2-0.5 in. Nozzle Type: Free flowing/Standard.
Some conditions may have to be altered to obtain acceptable parts. back pressure must be minimized to retain fiber length and optimize performance. Please do not run too cold, molded in stress & rough surface may become a problem. If you must run below melt or temperature recommended for dimensional precision you may compromise impact and esthetics. Retest parts to confirm performance.

Data provided by Ferro Corporation - Specialty Plastics Group.

A. Schulman has acquired the Ferro specialty plastics business.

Vendors:
Available Properties
  • Density, ASTM D792
  • Linear Mold Shrinkage, ASTM D955
  • Melt Flow, ASTM D1238
  • Tensile Strength, Ultimate, ASTM D638
  • Elongation at Break, ASTM D638
  • Flexural Yield Strength, ASTM D790
  • Flexural Modulus, Tangent; ASTM D790
  • Flexural Modulus, 1% Secant, ASTM D790
  • Izod Impact, Notched, ASTM D256
  • Izod Impact, Unnotched, ASTM D4812
  • Gardner Impact, ASTM D5420, M.F.E.
  • Deflection Temperature at 0.46 MPa (66 psi), ASTM D648
  • Deflection Temperature at 1.8 MPa (264 psi), ASTM D648
  • Rear Barrel Temperature
  • Middle Barrel Temperature
  • Front Barrel Temperature
  • Nozzle Temperature
  • Mold Temperature, Core. Cooler temperatures may be needed to maintain dimensions or eliminate sinks in thick sections.
  • Mold Temperature, Cavity
  • Drying Temperature, 2-3 hrs at 180°F or 4+ hours at 160°F.
  • Dry Time
  
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Manufacturer Notes:
A. Schulman, Inc., former Ferro Corporation

Category Notes
Plastic

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