Claremont Polymer Shapes - Plastic and metal parts manufacturer, Ontario, Canada.Claremont Polymer Shapes - Plastic and metal parts manufacturer, Ontario, Canada.
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EPOXY
MICARTAR   ACCULAMR   ARBORITER

SPECIFICATIONS:
U.S. FEDERAL L-P-509 TYPE IV
U.S. MILITARY MIL-I-24768
 MIL-P-79C TYPES GEB-R and -TR
 MIL-P-79C TYPES GEE-R and -TR
 MIL-P-13949F
ASTM D4357 CLASS 2 TYPES I, III and V
NEMA L1-1-1983 GRADES G-10, FR-4, G-11 and FR-5

NATURAL COLOUR: TRANSLUCENT BLUISH YELLOW

This premium, thermosetting polymer is often used in electrical applications and high strength, light weight tooling. EPOXY is resistant to many chemicals and solvents and only slightly attacked by strong oxidizing acids. There is little effect on the material from long-term sunlight exposure. High mechanical strength, very good electrical insulation, dimensional stability and resistance to higher temperatures are also characteristics of most EPOXIES. One of the important properties is its outstanding adhesion to most substrates. All of us are familiar with the two part, high strength EPOXY adhesives used to bond a very wide range of materials. This adhesion property makes EPOXY well suited to reinforcement, particularly with glass-fiber cloth, enhancing its mechanical, electrical and thermal properties. Available as sheet, rod and tube with woven glass fabric reinforcement; it can also be supplied in sheets with copper foil cladding on one or both sides for use as printed circuit boards. With its hardness, dimensional stability and heat resistance, EPOXY can be machined into parts with close tolerance. However, the presence of glass-fiber means that it is impossible to produce high quality finishes without expensive secondary operations. As well tool wear, even with carbide inserts, is quite high. Finally, the exposure of the glass-fiber reinforcement may lead to changes in chemical or electrical insulation properties not expected. Another unique property of woven glass fabric reinforced EPOXY is a very high fatigue resistance. Hence, it is used in jet aircraft and rocket parts and is well suited to vibratory feeder supports requiring high fatigue endurance and high physical properties.

GENERAL PROPERTIES
  ASTM test WOVEN FIBRE-GLASS REINFORCED
G-10 G-11
SPECIFIC GRAVITY   D792 1.82 1.80
TENSILE STRENGTH psi D638 41500 40300
TENSILE MODULUS 105 psi D638 18.5 17.0
ELONGATION % D638 4 4
FLEXURAL STRENGTH psi D790 67900 66000
FLEXURAL MODULUS 105 psi D790 27.0 30.0
COMPRESSIVE STRENGTH 10% psi D695 66000 63000
COMPRESSIVE MODULUS 105 psi D695    
HARDNESS rockwell M D785 M109 M110
IMPACT STRENGTH (1/2" x 1/2") ft-lb/inch of notch D256 12.5 11.5
THERMAL EXPANSION 10-5/F D696 0.72 0.76
HEAT RESISTANCE (continuous in air) F   290 310
DEFLECTION TEMPERATURE   D648    
@ 264 psi F   300 300
@ 66 psi F   N/A N/A
DIELECTRIC STRENGTH v/mil D149 570 530
DIELECTRIC CONSTANT   D150 3.5 to 5.0 3.6 to 5.2
DISSIPATION FACTOR 10-3 D150 10 to 13 12 to 15
WATER ABSORPTION 24hrs % D570 0.15 0.20
FLAMMABILITY in/min D635 0.06 0.09
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.