Plastic PMMA

Plastic PMMA (Acrylic) strength, stiffness, density and thermal properties, with their source.

A bracket in Plastic PMMA, smooth finish.

Mechanical
Process	Bulk polymer (molded or machined)
Yield strength	not given (tensile used)
Ultimate tensile strength	80MPasourcetypical, 23 °C
Compressive strength	110MPasourcecompressive yield stress, typical
Flexural strength	115MPasourcetypical
Elongation at break	5.5%sourcetypical
Young's modulus (stiffness)	3.3GPasourcetypical, short-term
Density	1,190kg/m³sourcetypical
Strength to weight	67.2kN·m/kg
Stiffness to weight	2.77MN·m/kg
Poisson's ratio	0.37sourcetypical
Shear modulus	1.2GPa
Bulk modulus	4.23GPa
Speed of sound	1,665m/s
Thermal
Thermal conductivity	0.19W/m·Ksourcetypical
Thermal expansion	70µm/m·Ksource0-50 °C
100 mm part over a 50 °C swing	350µm growth
Specific heat	1,470J/kg·Ksourcetypical
Heats up and cools (diffusivity)	0.109mm²/s
Thermal shock resistance	41.5W/m
Max service temperature	80°Csourcemax. permanent service temperature
Values for	Röhm PLEXIGLAS GS 0F00 cast acrylic sheet, typical values at 23 °C / 50 % RH (Röhm Technical Information Ref. No. 211-1)

Among 59 materials

Stiffness against density

Strength against density