Introduction to the BETA Series

The Diamex BETA Series polishing pads are a family of intrinsically formed polyester/polyurethane materials specifically developed for intermediate and final polishing applications.

All Diamex pads in this group are suede-type napped poromeric materials, designed to endure various mechanical stresses and compression deformation. Each type of Diamex poromeric pads has unique advantages and functional characteristics for superior performance in the field of precision processing and polishing of semiconductor crystals, rigid disks, glass, metals, and plastics.

Sell sheets are available for the BETA 735.

BETA 735

This is a suede-type poromeric pad having a soft surface layer. It’s nap features fine texture with vase shape pores. The substrate layer is relatively soft, designed to recover instantaneously from compression. This material is applicable for a wide range of final precision polishing applications.

BETA-735 pads are available in both Plain and Embossed.

Typical Physical Properties

  • Type
  • Thickness (inches)
  • Tensile Strength (kg/cm)
  • 10% Elongation wp
  • wf
  • 20% Elongation wp
  • wf
  • Peeling Strength (kg/cm)
  • wp
  • wf
  • Abrasion loss (mg)
  • Coefficient of Friction (g)
  • Compressibility (%)
  • Maximum Avail. Dia. (in.)
  • BETA 735
  • 0.50
  •  
  • 3.0
  • 1.3
  • 4.9
  • 2.0
  •  
  • 2.2
  • 1.8
  • 22.2
  • 1.487
  • 5.40
  • 54

Chemical Properties

  • Type
  • Acid Resistance
    (Hydrochloric Acid)
  • Alkali Resistance
    (Caustic Soda)
  • Heat Resistance
    (Softening Point)
  • BETA 735
  • pH (2-7)
     
  • pH (7-11)
     
  • 170C