TYPICAL PHYSICAL PROPERTIES

LEXAN / MARLEX / IMPLEX /  MARLON / POLYCARBONATE DATA 07/10/13

Properties A.S.T.M Polycarbonate
Specific Gravity D792 1.2
Specific Volume, cu.in. per lb. D792 23
Refractive Index, nD D542 1.586
Tensile Strength (at yield) p.s.i D638,D651 8,000 - 9,500
Elongation % D638 60 - 100
Modulus of Elasticity in Tension , 105 p.s.i D747 3.2
Compressive Strengt, p.s.i D695 11,000
Flexural Strength, p.s.i D790 11,000 - 13,000
Impact Strength, ft-lb per in. of notch(1/2x1/2 in. notched bar, Izod test) D256 12 - 16
Hardness , Rockwell D785 M-70 , R-118
Thermal Conductivity (see footnote 1) C174.6 4.6
Specific Heat, cal per Cel. per gm. ----- 0.30
Thermal Expansion, 105 per o Cel. D696 7
Resistance to heat, F (continous) ---- 250 F
Heat Distortion Temp oF D648 270 - 280 (364 p.s.i)
Volume Resistivity (see footnote 2) D257 2.1x1016
Dielectric Strength (see footnote 3) D149 400
Dielectric Constant, 60 cycles D150 3.17
Dielectric Constant 103 cycles D150 3.02
Dielectric Constant 106 cycles D150 2.98
Dissipation (power) factor, 60 cycles D150 0.0009
Dissipation (power) factor, 103 cycles D150 0.0021
Dissipation (power) factor, 106 cycles D150 0.010
Arc Resistance, sec. D495 10 - 120
Water absorbtion , 24Hr, 1/8"thick , % D570 0.15
Burning Rate D635 Self Extinguishing
Effect of Sunlight - Slight Color Change
Effect of Weak Acids D543 None
Effect of Strong Acids D543 Attacked slightly
Effect of Weak Alkalies D543 Resistant (limited)
Effect of Strong Alkalies D543 Attacked
Effect of Orgain Solvents D543 Soluble in chlorinated hydrocarbons. Partially soluble in aromatic hydrocarbons,keytones and esters.
Clarity 93% Clear Transparent to Opaque
Footnotes
1. 104 cal. per sec. per sq. cm., per 1 degree C per cm.
2. ohm-cm (50% relative humidity and 23o C
3. short-time, 1/8-in. thickness, volts per mil.
4. step-by-step , 1/8-in. thickness, volts per mil.
MILITARY SPECIFICATIONS
MIL-P-46144C
FEDERAL SPECIFICATIONS
Acetal Material, Injection Molding & Extrusion ASTM D-3935

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