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 Mechanical Tensile Strength 75 MPa Flexural … Continue reading Acrylic Properties