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HAPCAST 3731

Thermoplastic

Supplied by Hapco Inc.

The technical datasheet with complete property values for HAPCAST 3731 is available to members of the Prospector Plastics Database.
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Product Description
HAPCAST 3731 is a truly unique polymer alloy system, with the following features:
  • Can be used with a variety of curing agents to suit virtually every casting need
  • Small to large mass
  • Low to high temperature applications
  • Easily poured system
  • Short term exposure to 275°F and continuous service at 250° F
  • Easily machined with regular tools
  • Drilled, tapped, milled, sanded, ground, polished and turned in a lathe
  • Shrinkage as low as .00075 per linear inch can be obtained through proper selection of curing agent for any given mass. (See Hapcast 3731 curing agent chart)
  • Molds - both prototype and production molds can be made with quickly and at low cost

Typical uses for HAPCAST 3731 are:
  • Molds for open cast plastics and urethanes
  • Compression molds
  • Prototype injection molds
  • Vacuum forming molds
  • Metal forming dies
  • Duplicate and master models
  • Keller models
  • Foundry patterns and match plates
  • Holding and assembly fixtures
  • Lay-up molds for reinforced plastics
  • Shoe molds
  • Pressure form molds
  • RIM molds
  • LPIM and LIM molds

Any of our curing agents may be used with HAPCAST 3731. (See Hapcast 3731 curing agent chart)
General  
Material Status 
  • Commercial: Active
Availability 
  • North America
Features 
  • Fast Molding Cycle
  • Low Shrinkage
  • Low Viscosity
  • Machinable
  
Uses 
  • Molds/Dies/Tools
Appearance 
  • Aluminum
Forms 
  • Liquid
Processing Method 
  • Casting
Physical
Nominal Value
Unit
 
Specific Gravity
 
  
Molding Shrinkage - Flow
      
-- 2
in/in
  
--
in/in
  
Mechanical
Nominal Value
Unit
 
Compressive Strength
psi
  
Hardness
Nominal Value
Unit
 
Durometer Hardness (Shore D)
 
  
Thermoset
Nominal Value
Unit
 
Thermoset Mix Viscosity (77°F)
cP
  
Related Terminology
Product names can be difficult to match. You may have searched any one of these terms to find this product: HAPCAST 3731, HAPCAST , HAPCAST3731, 3731, Thermoplastic, Unspecified, Thermoplastic Unspecified, TP, Unspecified, TP Unspecified, Hapco Inc., ThermoplasticUnspecified, TPUnspecified
Features
Features may also be described by the following terms: Low Viscosity, Low Shrinkage, Fast Cycle, Rapid Cycle, Productivity, Fast Molding Cycle.
Uses
Uses may also be described by the following terms: Molds/Dies/Tools, Molds, Dies, tools.
Notes
1Typical properties: these are not to be construed as specifications.
2with conductites
 
IDES
Copyright © 2012 IDES
The information presented on this datasheet was acquired by IDES from the producer of the material. IDES makes substantial efforts to assure the accuracy of this data. However, IDES assumes no responsibility for the data values and strongly encourages that upon final material selection, data points are validated with the material supplier.