What Are the Differences Between Extruded Acrylic and Cast Acrylic Sheets?

Acrylic is an especially versatile materials which is utilized in a variety of environments. Acrylic sheeting is obtainable in an enormous vary of variations, together with; clear, colored, mirrored, frosted and even with a brushed aluminium impact.

Extruded acrylic and forged acrylic are the 2 predominant varieties of solid surface manufacturer you’ll come throughout. Though they could initially look related, the 2 have fairly totally different properties and one can be far more costly than the opposite.

You will need to pay attention to the variations between the 2 so you possibly can choose the sort most fitted on your wants.

Extruded and forged acrylic sheets differ primarily of their thermal and chemical properties that are brought on by the manufacturing course of. There are additionally a number of different variations as outlined beneath which you will want to take into account when selecting acrylic sheet on your dwelling DIY challenge.

Key variations try to be conscious of when working with acrylic sheets:

Thickness variations

As a result of means the sheets are made forged acrylic are likely to have slight variations within the thickness of the sheet whereas extruded sheets are far more uniform, with subsequent to no variation. This makes extruded acrylic superb for vacuum forming or conditions the place extra detailed exact shapes are wanted.

Temperature response

Solid acrylic has an isotropic response to temperature that means there’s a most shrinkage of two% in all instructions. It might be essential to notice that acrylic expands and contracts at a a lot higher fee than glass. Extruded acrylic, however, exhibits variations in shrinkage relying on the thickness and path of extrusion.

Advantages of Extruded sheets


  • Decreased mechanical properties imply course of benefits over forged acrylic when bending, heating and vacuum forming
  • Higher thickness tolerances
  • Decrease viscosity when sizzling means it’s extra ductile than forged acrylic


Advantages of Solid acrylic sheets


  • Higher thermal stability
  • Greater resistance to crazing (when a community of very small cracks kind) when uncovered to solvents
  • Wider thermoforming vary than extruded acrylic
  • Higher potential to be reworked sizzling
  • Superior floor end and optical properties


Each varieties of acrylic profit from being sturdy and lengthy lasting, exhibiting wonderful resistance to pure ageing. Most manufactures will assure towards noticeable yellowing for about 10 years.

Usually it will not be made apparent which sort of acrylic you’re shopping for, particularly on-line. Solid acrylic may be as a lot as double the value of extruded acrylic so if nothing is talked about and it appears low cost, the possibilities are it’s extruded acrylic.


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