MatWeb - Material Property Data Advertise with MatWeb!     Register Now
Data sheets for over 170,000 metals, plastics, ceramics, and composites.
MatWeb - Material Property Data HOME  •   SEARCH  •   TOOLS  •   SUPPLIERS  •   FOLDERS  •   ABOUT US  •   FAQ  •   LOG IN    
Recently Viewed Materials (most recent at top)  

Login to see your most recently viewed materials here.

Or if you don't have an account with us yet, then click here to register.

  Searches:   Advanced  | Category  | Property  | Metals  | Trade Name  | Manufacturer  | Recently Viewed Materials
A. Schulman Gapex® RPP30EA23BK 30% Fiberglass Reinforced, Heat-Stabilized, Chemically-Coupled, Homopolymer Polypropylene
Categories: Polymer; Thermoplastic; Polypropylene (PP); Polypropylene with 30% Glass Fiber Filler

Material Notes: 30% Fiberglass Reinforced, Heat-Stabilized, Chemically-Coupled, Homopolymer Polypropylene

Description: Precolored black

Applications: Primary end use is for mechanical and/or underhood applications.

Specifications: Meets/exceeds DaimlerChrysler Engineering Standard MS-DB537 Type C.

Tensile Retention: 70.8.0 hrs.; (500 hrs. @ 150°C); MS-DB537 Type C Specification: 58.3.0 Min.; ASTM D573
Filler Content: 30.0%; MS-DB537 Type C Specification: 27.0-33.0; 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. Cushion (Range): 0.2-0.5 in. Nozzle Type: Free flowing/Standard.
Some conditions may have to be altered to obtain acceptable parts. Please do not run too cold, molded in stress and rough surface may become a problem. If you must run below melt or temperatures 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.

Available Properties
  • Density, MS-DS537 Type C Specifications: 1.09-1.15; ASTM D792
  • Linear Mold Shrinkage, ASTM D955
  • Melt Flow, MS-DB537 Type C Specification: 2.0-7.0 g/10 min; ASTM D1238
  • Tensile Strength, Ultimate, MS-DB537 Type C Specification: 64.8 MPa Min.; ASTM D638
  • Flexural Modulus, Secant at 1.3 mm/min; MS-DB537 Type C Specification: 4.14 GPa Min.; ASTM D790
  • Izod Impact, Notched, MS-DB537 Type C Specification: 0.534 J/cm Min.; ASTM D256
  • Gardner Impact, M.F.E. (ring removed); MS-DB537 Type C Specification: 0.34 J Min.; ASTM D5420
  • Deflection Temperature at 0.46 MPa (66 psi), ASTM D648
  • Deflection Temperature at 1.8 MPa (264 psi), MS-DB537 Type C Specification: 138°C Min.; 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
Property Data

This page displays only the text
of a material data sheet.

To see MatWeb's complete data
sheet for this material (including
material property data, metal
compositions, material suppliers,
), please click the button below.

Manufacturer Notes:
A. Schulman, Inc., former Ferro Corporation

Category Notes

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.


Proto3000 – 3D Engineering Solutions
Please read our License Agreement regarding materials data and our Privacy Policy. Questions or comments about MatWeb? Please contact us at We appreciate your input.

The contents of this web site, the MatWeb logo, and "MatWeb" are Copyright 1996-2023 by MatWeb, LLC. MatWeb is intended for personal, non-commercial use. The contents, results, and technical data from this site may not be reproduced either electronically, photographically or substantively without permission from MatWeb, LLC.