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POLYCAST-270

PolyCast 270LV
Aluminum Filled Epoxy Compound
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.




Specifications · Cure Schedule · Mixing Instructions

Specifications

Color, Visual

 Brown (Part B PC 67)
Neutral Grey (Part A)

Viscosity, cps (ASTMD 2393)

 17000 (Part A)
500 (Part B PC 67)

Specific Gravity

 1.0 (Part B PC 67)
1.63 (Part A)

Compressive Strength

 15000 psi (Part B PC 67) (ASTMD 695)

Mix Ratio

 100:10 (Part B PC 67) (By Weight)

Mixed Viscosity (ASTM-D-2393 @ 25 °C)

 5000 cps (Part B PC 67)

Pot Life

 4 hrs. (Part B PC 67) @ 72 °F

Shelf Life @ 70 °F

 12 months (Part B PC 67) @ 72 °F

Hardness, ASTM-D-2240 (Durometer)

 84 (Part B PC 67) (Shore D)

Tensile Strength (ASTM-D-638)

 9500 psi (Part B PC 67) (ASTMD 638)

Tensile Elongation (ASTM-D-638)

 1 % (Part B PC 67) (ASTMD 638)

Flexural Strength (ASTM-D-790)

 10000 psi (Part B PC 67) (ASTMD 790)

Service Temperature Range

 400ºF (Part B PC 67)

Linear Shrinkage

 0.0005 (in/in °C) (Part B PC 67)


Cure Schedule
PC-67 - Overnight at Room temp. (75 °F) and Post Cure 2 hours at 200 °F; or 1 hour at 250 °F
Note: For service temperature above 300 °F, post cure 3-4 hours at 325-350 °F.



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.
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