Fiberglass Structural Shapes: Typical Coupon Properties

The values listed below are test results from coupon tests performed in accordance with designated ASTM Test.


Mechanical Properties ASTM UNITS VALUE
Tensile Strength, LW D-638 psi 30,000
Tensile Strength, CW D-638 psi 7,000
Tensile Modulus, LW D-638 10 6 psi 2.5
Tensile Modulus, CW D-638 10 6 psi 0.8
Compressive Strength, LW D-695 psi 30,000
Compressive Strength, CW D-695 psi 15,000
Compressive Modulus, LW D-695 10 6 psi 2.5
Compressive Modulus, CW D-695 10 6 psi 1.0
Flexural Strength, LW D-790 psi 30,000
Flexural Strength, CW D-790 psi 10,000
Flexural Modulus, LW D-790 10 6 psi 1.8
Flexural Modulus, CW D-790 10 6 psi 0.8
Modulus of Elasticity, E Full Section 10 6 psi 2.8
Shear Modulus -------- 10 6 psi 0.450
Short Beam Shear D-2344 psi 4,500
Punch Shear D-732 psi 10,000
Bearing Strength, LW D-953 psi 30,000
Notched Izod Impact, LW D-256 ft-lbs/in 25
Notched Izod Impact, CW D-256 ft-lbs/in 4
       
Physical Properties ASTM UNITS VALUE
Barcol Hardness D-2583 -------- 45
24 Hour Water Absorption D-570 % max 0.45
Density D-792 lbs/in 3 .062-0.70
Coefficient of Thermal Expansion, LW D-696 10 -6 in/in/°C 8
       
Electrical Properties ASTM UNITS VALUE
Arc Resistance, LW D-495 seconds 120
Dielectric Strength, LW D-149 kv/in 35
Dielectric Strength, PF D-149 volts/mil 200
Dielectric Constant, PF D-150 @60hz 5
       
Polyester and Vinylester Fire Retardant Structural Profiles:
       
Flammability Properties ASTM UNITS VALUE
Tunnel Test E-84 Flame Spread 25 max
Flammability D-635 -------- Nonburning
 UL 94 --------  
 NBS Smoke Chamber E-662 Smoke Density  

LW = Lengthwise
CW = Crosswise
PF = Perpendicular to Laminate Face