PC-ALUM Aluminum filled

Aluminum filled. Low shrinkage, easy to machine, for tooling, mold making, metal replacement, void filling.

PC-ALUM Features

Filled
Service Temperature (C): -40 to 130
Semi-Rigid, Gray
Initial mixed viscosity: 16,000 cps
Specific gravity: 1.7
Hardness scale: 82D
Compressive strength: 13,000 psi
Linear shrinkage, cm/cm, in/in: .001
Thermal conductivity: 8.0
Coefficient of thermal expansion: 40x10 (-6)
Dielectric strength: - v/mil
Dielectric constance @ 1000Hz: -
Disipation factor @ 1000Hz: -
Volume resistivity, ohm*cm: .08
Moisture absorbtion %, 7-days: .08

POLYCAST   270LV

Aluminum Filled Epoxy Compound

DESCRIPTION:

Polycast 270 LV 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. PC-270 LVcan withstand elevated temperatures as well.

PROPERTIES - UNCURED:	Part A	Part B (PC 67)
Color, Visual	Neutral Grey*	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 P.C. 270 LV in the original container prior to use to insure any settled filler may be reincorporated. Warming PC 270 LV to 100°F facilitates ease of use.

2.       Weigh out the required amount of P.C.270 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:                                                 

PC-67 - Overnight at Room temp. (75°F) and Post Cure 2 hours at 200^o F; or 1 hour at 250^oF

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

*After Post Cure or exposure to heat, PC 270LV turns to an olive drab color to indicate full cure.