Acrylic Properties

The key properties of cast & block Acrylic (PMMA)?

Acrylic Properties

What are the key properties of cast acrylic (PMMA)?

Cast acrylic sheet and block acrylic have properties that make them suitable for a wide variety of applications.

General Properties:
Relative Density 1.19 g/cm3
Rockwell Hardness M 102
Water Absorption -.2%
~Flammability Class 3, (BS 476 pt 7) UL94 HB

Tensile Strength 75 MPa
Flexural Strength 115 MPa

Thermal Properties
Minimum Service Temperature -40⁰C
Maximum Service Temperature 80⁰C
Softening Point > 110⁰C
Linear Expansion 7.7×10-5

Optical Properties
Light Transmission > 92%
Refractive Index 1.49


Further Reading –  Properties & Applications of Acrylic

Can I buy heat treated Acrylic or Plexiglas

Carville have been working with Perspex cast acrylic (PMMA) since the 1930’s … Read more


Heat Treatment of Acrylic and Plexiglas

All cast and extruded plastic materials will carry internal stress. To ensure stable dimensions and a long life for precision component parts, it is essential … Read more


How thermally stable is Acrylic or Plexiglas (PMMA)

To ensure component stability, it is important to heat treat both the base material and finished component to ensure that they are stress free and will remain stable over a long period of time… Read more


How to join Acrylic or Plexiglas

Common techniques to join acrylic would be with the use of solvents or adhesives. It is possible to achieve a strong joint, however, the visual results may not be as desired and joints can suffer from shrinkage or dry back over time… Read more


How to polish Acrylic or Plexiglas

There are a range of techniques used to polish acrylic, plexiglas and other plastics such as polycarbonate… Read more


Machined plastic components for medical applications

Carville have been supplying precision machined plastic components to the medical industry since the 1960’s. We have extensive experience in the heat treatment, CNC…. Read more


Why would I use Acrylic (PMMA) or Plexiglass?

Perspex cast acrylic sheet and block have properties which make them suitable for a wide variety of applications ranging from precision engineering components to commercial and domestic products. Read more