1-888-5FIBERS
 
Fiberex Glass Corporation

6602, 45 Street,
Leduc, Alberta
Canada T9E 7C9
 

The E-CR Advantage

What is E-CR glass?

  1. A zero boron glass that is free of added fluorides.  Hence it is environmentally friendly
     
  2. It conforms to ASTM D578-1999 specification for E glass
     
  3. It combines the electrical and mechanical properties of E glass with superior inherent corrosion resistance
     
  4. It can replace E glass in most applications
E-CR Glass vs E Glass

Advantages of E-CR glass over E glass:

  • Unmatched corrosion resistance due to unique glass composition
     
  • Superior thermal resistance due to higher softening point
  • Higher di-electric strength and better surface resistivity
     
  • Higher tensile strength and modulus in pultrusion
     

Advantage of E-CR glass in PULTRUSION:
Higher modulus of elasticity of E-CR glass (E >5%) improves the tensile strength and modulus in pultrusion due to the unidirectional nature of the fiber orientation in the composite, both with polyester and epoxy resin systems.

Advantages of E-CR glass in SEWER PIPE applications:
The superior acid and strain corrosion resistance of E-CR glass are the main reasons why E -CR glass is the preferred choice over E glass for sewer pipe applications. Buried underground pipes reinforced with E-CR glass remain practically at a constant strain upon installation for a long period of time.

In contrast, the problems associated with leaching of Ca and Mg ions with the use of E glass significantly shortens the life span of the installed pipes. The replacement of metallic ions by hydrogen ions results in a volume change that induces tensile stresses at the glass fiber surface leading to failure. Additionally, with E glass, the fibers are also prone to helical micro-cracks due to acid stress corrosion. This can be avoided with the use of E-CR glass reinforcements in place of E glass.

Advantages of E-CR glass in ELECTRICAL applications:

  • E-CR glass fibers have a low seed count. This provides for higher electrical insulation properties.
  • Composite insulator core rods with E-CR glass are more resistant to stress corrosion/brittle fracture compared to E glass
  • Dielectric strength is higher and current leakage lower with E-CR glass in insulator rods.
  • The surface resistivity with E-CR glass is significantly higher compared to E glass

Advantages of E-CR glass in CHEMICAL resistant applications:
E-CR glass has vastly superior corrosion resistance due to the fact that:

  • It is an inorganic polymer
  • It is a combination of metallic oxides with silica as backbone
  • Its composition has metallic oxides as network modifiers
  • There is virtually no leaching of the metallic ions
  • The long-term strength retention of E-CR is significantly higher
  • There are opportunities to reduce design thickness of the composites with the use of E-CR glass due to its inherent higher initial strength as well as its retention over time.