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Design Options

Clear blue or gray tint
Smooth polished surface
Standard (both sides)

Boltaron® 4325 is a transparent, corrosion resistant CPVC sheet with a smooth polished surface on both sides. Boltaron® 4325 is suitable for thermoforming and meets FM Global Cleanroom Materials flammability test protocol (Class 4910).


  • High impact resistance
  • Corrosion resistance type II PVC
  • Smooth, polished surface
  • Suitable for thermoforming
  • Conforms to ASTM D1784


  • Semiconductor cleanroom equipment
  • Machined parts
  • Thermoformed parts

Performance Details


  • Name Test Method Imperial Metric
  • Specific Gravity ASTM D792 1.47
  • Tensile Strength ASTM D638 9,000 psi 62 MPa
  • Flexural Strength ASTM D790 15,000 psi 103 MPa
  • Flexural Modulus ASTM D790 450,000 psi 3,103 MPa
  • Izod Impact Notched ASTM D256 73°F 0.5 ft-lb/in 23°C 27 J/m
  • Hardness Rockwell ASTM D785 122
  • Heat Deflection Annealed ASTM D648 177.1°F @ 264 psi 80.6°C @1.8 MPa
  • Modulus of Elasticity ASTM D638 480,000 psi 3,309 MPa
  • Elongation Yield ASTM D638 3.76%
  • Heat Deflection Unannealed ASTM D648 165.9°F @ 264 psi 74.4°C @ 1.8 MPa
  • FM Global FM 4910 Approved

* Independent lab tests. All tests at 73 °F (23 °C) in dry conditions unless otherwise noted.

Sheet Sizes

  • Name Imperial Metric
  • Lengths 96 in 2,438 mm
  • Widths 48 in. to 1,219 mm
  • Gauges from 0.125 to 0.5 in from 3.175 to 12.7 mm
  • Custom Sizes Blank sizes, gauges on request

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