POLYCAST Alum

Aluminum Filled Epoxy Compound

DESCRIPTION:

Polycast Alum is an aluminum filled, epoxy formulation which is used for tooling in both small and large applications. It is also suitable for use in making molds which have excellent wear resistance, as well as metal replacement, and void filling. PC-Alum can withstand elevated temperatures as well.

PROPERTIES - UNCURED: Part A  Part B (PC 67)  
Color, Visual Neutral Grey* Neutral Brown  
Viscosity, cps. 17,000    500 ASTMD2393
 Specific Gravity 1.63   1.0  
Mix Ratio (By Weight)    100:10  
Mixed Viscosity, cps   5000 ASTMD2393
Pot Life @ 72o F, hours   4  
Shelf Life @ 72o F, months   12  
PROPERTIES - CURED:      
PHYSICAL      
Hardness Durometer (Shore D)   84 ASTMD 2240
Tensile Strength, psi   9500 ASTMD 638
Tensile Elongation, %   1 ASTMD 638
Compressive Strength, psi   15,000 ASTMD 695
Flexural Strength, psi   10,000 ASTMD 790
Service Temperature   400°F  
Shrinkage (in/in °C)   0.0005  
       

                      

MIXING INSTRUCTIONS:

1.       Premix PC Alum in the original container prior to use to insure any settled filler may be reincorporated. Warming PC Alum to 95°F facilitates ease of use.

2.       Weigh out the required amount of PC Alum Part A and the requisite Part B.

3.       Mix thoroughly, scraping both sides and bottom of container.

4.       Evacuate mixture at 29 in. Hg for 5-10 minutes (if desired).

5.       Pour into mold or cavity.

CURE SCHEDULE:                                                 

Overnight at Room temp. (75°F) and Post Cure 2 hours at 200o F; or 1 hour at 250oF

NOTE: For service temperature above 300°F, post cure 3-4 hours at 325-350°F.

*After Post Cure or exposure to heat, PC Alum turns to a slightly olive drab color to indicate full cure.

 

General Purpose
PC-100: Low Cost General Purpose
PC-125: Low viscosity potting and casting.
PC-133: Flame retardant casting
PC-135: Machinable.
PC-159: Flame retardant UL94V-0 rated.
PC-205: Low viscosity version of 159.
PC-266: Version of 159 meeting MIL-1-6923.

PC-290:Room Temp. Cure
PC-510: Low Viscosity, Clear Casting

Thermally Conductive
PC-100: Low Cost General Purpose
PC-140
: Castable Heat Sink, UL94v0.
PC-240: Superior resistance.
PC-280: Best balance of properties.
PC-282: Twice the conductivity of PC-280 with lower viscosity.
PC-287: Highest thermal conductivity.

PC-571: One Component, Rigid
PC-581: One Component, Flexible
PC-582: Flexible Heat Cure
PC-8300: Single Component, Casting Sand

Special Epoxies
PC-ALUM: Aluminum filled
PG-30: Room Temp Epoxygel
PG-50: Flexible Epoxy gel
PC-220: Electrically conductive
PC-250: Soft, flexible epoxy
PC-254: Low Viscosity Filled
PC-270: Aluminum Filled

PC-517: Adhesive Flexible
PC-601: Very low viscosity
PC-610: Optically clear
PC-661: Lightweight

PC-685: Superior thermal shock resistance

PB-839: Equal Ratio Adhesive
PC-8500: Single Component, Lightweight