MatWeb - Material Property Data Advertise with MatWeb!     Register Now
Data sheets for over 180,000 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
Ensinger PEI
Covestro Baydur® 426 IMR RIM system
Categories: Polymer; Thermoset; Polyurethane, TS; Thermoset Polyurethane, Solid RIM

Material Notes: Characterization: Baydur 426 IMR is a polyurethane high density structural RIM (HD SRIM) system.

Properties / Applications: Baydur 426 IMR is a polyurethane high density structural RIM (HD SRIM) system used for automotive and light truck applications. This system is well suited for load bearing truck beds, tailgates, bumper beams, load floors, etc. It has excellent heat stability performance. Baydur 426 IMR composites can be used to replace steel or structural plastics for significant weight reduction ad lower tooling costs. Due to its inherent nature, this system is corrosion and abrasion resistant. The Baydur 426 IMR system can be processed with either a closed mold or open mold. This system is combined with a variety of glass reinforcements to make a structural composite. Glass mats, directed chop preforms or glass rovings can be used for reinforcement. This system has the appropriate reaction rate so that it can be used with a chopped glass fiber RIM machine. The Baydur 426 IMR system has an exceptionally long gel time, yet fast cure time, that makes it well suited for large automotive parts.

Information provided by Covestro

Available Properties
  • Specific Gravity, Polyol (Component B)
  • Specific Gravity, Isocyanate (Component A)
  • Specific Gravity, ASTM D792, Continuous filament mat
  • Specific Gravity, ASTM D792, Chopped glass preform
  • Viscosity, Isocyanate (Component A)
  • Viscosity, Polyol (Component B)
  • Tensile Strength at Break, ASTM D638, Continuous filament mat
  • Tensile Strength at Break, ASTM D638, Chopped glass preform
  • Flexural Strength, ASTM D790, Continuous filament mat
  • Flexural Strength, ASTM D790, Chopped glass preform
  • Flexural Modulus, ASTM D790, Chopped glass preform
  • Flexural Modulus, ASTM D790, Continuous filament mat
  • CTE, linear, ASTM D696, Continuous filament mat
  • CTE, linear, ASTM D696, Chopped glass preform
  • Flash Point, PMCC, Polyol (Component B)
  • Flash Point, PMCC, Isocyanate (Component A)
  • Mold Temperature
  • Gel 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:
Covestro Deutschland AG, Bayer MaterialScience

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.


Visit Zeus Inc. for PEEK Tubing
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 1996-2024 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.