Fiberglass Technical Data

Properties
Mechanical	ASTM	Units	Value
Tensile Stress, LW	D638	PSI	30,000
Tensile Stress, CW	D638	PSI	7,000
Tensile Modulus, LW	D638	PSI	2,500,000
Tensile Modulus, CW	D638	PSI	800000
Compressive Stress, LW	D695	PSI	30,000
Compressive Stress, CW	D695	PSI	15,000
Compressive Modulus, LW	D695	PSI	2,500,000
Compressive Modulus, CW	D695	PSI	1,000,000
Flexural Stress, LW	D790	PSI	30,000
Flexural Stress, CW	D790	PSI	10,000
Flexural Modulus, LW	D790	PSI	1,600,000
Flexural Modulus, CW	D790	PSI	800,000
Modulus of Elasticity	Full Section	PSI	2,600,000
Parallel Compressive Shear Stress LW	D3846	PSI	3000
Shear Modulus, LW	-----------	PSI	425000
Short Beam Shear, LW	D2344	PSI	4,500
Bearing Stress, LW	D953	PSI	30,000
Poisson's Ratio, LW	D3039	in/in	0.33
Notched Izod Impact, LW	D256	ft-lbs/in	25
Notched Izod Impact, CW	D256	ft-lbs/in	4
Notched Izod Impact, CW	D256	J/mm	0.214
Physical
Hardness	D2583		45m
24 hr Water Absorbtion	D570	% Max	0.6
Density	D792	lbs/in3	.062-.070
Coefficiant of Thermal Expansion, LW	D696	10-6 in/in°F	4.4
Thermal Conductivity	C177	Btu-in/hr- ft 2 -ºF	4
		w(m+°K)	0.58
Electrical
Arc Resistance, LW	D495	Seconds	120
Dielectric Strength, LW	D149	KV/in	35
Dielectric Strength, PF	D149	volts/mil	200
Flammability 1/16"	UL94		VO
Tunnel Test	E-84		25 Max
NBS Smoke Chamber	E-662		650-700