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Table 2. Mechanical Properties of Acrylic Plastic Plate 
Used for the Fabrication of EDU Windows. 
Property Measured 
Compressive Yield, psi 
(ASTM D-695) 
Average 
Maximum 
Compressive Modulus of Elasticity, psi 
(ASTM D-695) 
Deformation Under Compressive Load, percent 
(ASTM D-621-64; 4000 psi at 122 F for 24 hrs) 
Tensile Ultimate Strength, psi 
(ASTM D-638-64) 
11,300 
Tensile Modulus of Elasticity, psi 5 
(ASTM D-638-64) o2 & 1e 
Tensile Elongation at Failure, percent 
(ASTM D-638-64) 
Flexure Strength, psi 
(ASTM D-790) 
17,000 17,100 
5 
Flexure 
(ASTM 
5 
Modulus of Elasticity, psi 
D-790) 
4.96 x 10 5.0 x 10 
Shear Strength, psi 
(ASTM D-732) 
10,200 10,200 
x 
Swedlow 350 acrylic plastic meeting MIL-P-8184 specification. 
