Claremont Polymer Shapes - Plastic and metal parts manufacturer, Ontario, Canada.Claremont Polymer Shapes - Plastic and metal parts manufacturer, Ontario, Canada.
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POLYCARBONATE
LEXANR   TUFFAKR   HYZODR   MERLONR

SPECIFICATIONS:
U.S. FEDERAL L-P-393A
U.S. MILITARY MIL-P-46144A TYPE 1
 MIL-P-81390
U.S. ORDNANCE OS-12702
FDA TITLE 21 CFR 177.1580
ASTM D3935
AMS 3611B          AMS 3628A
UNDERWRITER'S LABORATORIES UL-752

NATURAL COLOUR: CLEAR COLOURLESS

A semi-crystalline polymer, POLYCARBONATE is characterized by unequalled impact resistance with very high clarity. Sheet has 250 times the impact resistance of glass and 30 times ACRYLIC. As well, dimensional stability and tensile strength are good. Creep resistance is very good over a broad range of temperature. POLYCARBONATE has good electrical resistance properties, little affected by humidity. But, if strong arcing is expected, POLYCARBONATE should not be used. Resistance to water, dilute acids, oxidizing and reducing agents, neutral and acidic salt solutions; animal, vegetable and mineral oils; cyclic and aliphatic hydrocarbons is good at room temperature. Alkalais, concentrated acids, amines, ketones, esters and aromatic hydrocarbons attack POLYCARBONATE. Halogenated hydrocarbons, phenols and aromatic amines dissolve POLYCARBONATE. Water based emulsions are usually employed when machining POLYCARBONATE. Close tolerance parts can be machined using high speed tooling, at high turning speeds with adequate allowance to minimizing heat build-up and internal stressing. Machining results in frosted surfaces and parts that are not clear. POLYCARBONATE parts not subject to impact may be solvent cemented; but parts subject to impact must be surface roughened and bonded with polar adhesives.

A unique laminated sheet using several ply's of POLYCARBONATE, with or without ACRYLIC interlayers, is bullet resistant with multiple-shot, no-spalling function.

GENERAL PROPERTIES
  ASTM test Extruded Sheet, Tube and Rod 20% Glass Filled
SPECIFIC GRAVITY   D792 1.20 1.35
TENSILE STRENGTH psi D638 9500 21000
TENSILE MODULUS 105 psi D638 3.45 8.60
ELONGATION % D638 110 5
FLEXURAL STRENGTH psi D790 13500 19000
FLEXURAL MODULUS 105 psi D790 3.4 8.0
COMPRESSIVE STRENGTH 10% psi D695 12500 16000
COMPRESSIVE MODULUS 105 psi D695 3.45 7.60
HARDNESS rockwell R D785 R118 R122
IMPACT STRENGTH (1/2" x 1/2") ft-lb/inch of notch D256 16.0 2.0
THERMAL EXPANSION 10-5/F D696 3.90 1.49
HEAT RESISTANCE (continuous in air) F   250 250
DEFLECTION TEMPERATURE   D648    
@ 264 psi F   270 295
@ 66 psi F   280 300
DIELECTRIC STRENGTH v/mil D149 400 490
DIELECTRIC CONSTANT   D150 2.96 to 3.17 3.13 to 3.17
DISSIPATION FACTOR 10-3 D150 0.9 to 10.0 0.9 to 7.3
WATER ABSORPTION 24hrs % D570 0.15 0.16
FLAMMABILITY in/min D635 0.7 <0.5
OPTICAL PROPERTIES      
REFRACTIVE INDEX   D542 1.586 OPAQUE
LIGHT TRANSMITTANCE % D1003    
parallel     85  
total     91  
haze     0.5 to 2.0  
PLEASE NOTE:
Values shown in the above table are averages and there will be variances from lot to lot. After selecting a material based upon these values, you must conduct tests specific to your application to be assured the material suits your needs.

PLEASE NOTE:
Machining Clear POLYCARBONATE results in a frosted appearance; it will no longer be clear! Restoring clarity is very, very difficult.