Physical Properties for Extruded Acrylic Sheet

Extruded Acrylic Sheet

Mechanical
Properties	ASTM Method	Typical Value (0.250" thickness)
Specific Gravity	D 792	1.19
Tensile Strength	D 638	10,000 psi (69 MPa)
Elongation, Rupture		4.5%
Modulus of Elasticity		4000,000 psi (2,800 MPa)
Flexural Strength	D 790	17,000 psi (117 MPa)
Modulus of Elasticity		480,000 psi (3,300 MPa)
Compressive Strength (yield)	D 695	17,000 psi (117 MPa)
Impact Strength	D 256	0.4 ft. lbs/in. of notch
Izod Milled Notch		(21.6 J/m of notch)
Rockwell Hardness	D 785	M-93
Barcol Hardness	D 2583	48

Optical
Properties	ASTM Method	Typical Value (0.250" thickness)
Refractive Index	D 542	1.49
Light Transmission, Total	D 1003	92%

Thermal
Properties	ASTM Method	Typical Value (0.250" thickness)
Forming temperature	-	Approx. 300°F (149°C)
Deflection Temperature Under load, 264 psi	D 648	195°F (91°C)
Vicat Softening Point	D 1525	220°F (105°C)
Maximum Recommended Continuous Service Temperature	-	160°F (71°C)
Coefficient of Linear Thermal Expansion	D 696	0.000040 in/in - °F (0.000072 m/m - °C)
Coefficient of Thermal Conductivity	Cenco-Fitch	1.3 Btu(hr) (sq.ft) (°F/in) (0.19 w/mK)
Flammability, Burning Rate (0.125" thickness)	D 635	1.0 in/min (25 mm/min)
Self Ignition Temperature	D 1929	850°F (455°C)
Specific Heat @ 77°F	-	0.35 BTU/(lb.) (°F) (1470J/KgK)
Smoke Density Rating	D 2843	4.8%

Electrical
Properties	ASTM Method	Typical Value (0.250" thickness)
Dielectric Strength Short Time (0.125")	D 149	430volt/mil (17KV/mm)
Dielectric Constant 60 Hertz 1,000 Hertz 100,000 Hertz	D 150	3.6 3.3 2.8
Dissipation Factor 60 Hertz 1,000 Hertz 100,000 Hertz	D 150	0.06 0.04 0.02
Volume Resistivity	D 257	10¹⁶Ohm-cm
Surface Resistivity	D 257	10¹⁵Ohms

Water Absorption
Properties	ASTM Method	Typical Value (0.250" thickness)
24 hrs @ 73° F	D 570	0.2%

Odor
Properties	ASTM Method	Typical Value (0.250" thickness)
	-	None

Taste
Properties	ASTM Method	Typical Value (0.250" thickness)
	-	None

Notes:

(a) Typical values; should not be used for specification purposes.
(b) Values shown are for 0.250” thickness. Some values will change with thicknessor pigmentation
(c)It is recommended that temperatures not exceed 160°F for continuous service, or190° F for short term use.

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Title: Physical Properties for Extruded Acrylic Sheet
Description: Physical, Mechanical, Thermal, and Electrical Typical Properties.
Published: 1/14/2009
Last Edited: 1/6/2023

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