General Plastics’ advanced LAST-A-FOAM® FR-4700 high-temperature polyurethane foam tooling boards can handle peak temperatures up to 400 °F (200 °C) and continuous-use temperatures up to 350 °F (177 °C) – considerably more than other products on the market. This series is non-abrasive and can be machined with basic high-speed steel (HSS) cutting tools. It can also be cut cleanly with water jets and traditional wood-carving tools. Economical and dimensionally stable, this stiff foam board is perfect for prototype machining, vacuum forming, pattern making, high-temperature curing prepregs, and other limited-run tooling where traditional metal dies are too expensive. The FR-4700 high-temperature series of high-density foam is available in thicknesses up to 12” in 18-lb. densities, and up to 11” in 30- and 40-lb. densities. This high-performance material is an exceptional choice for all of high-temperature requirements.
Advantages
The main advantages of the FR-4700 are as follows:
Highly machinable
Dimensionally stable
Withstands peak temperatures up to 400 °F
Supports continuous-use temperatures up to 350 °F
Consistently uniform
Applications
The main applications of the FR-4700 are as follows:
Pattern making
Prototype machining
Vacuum forming
Tool proofing
Master model making
Prepreg composite layup tools
Monolithic tools and molds
High-temperature curing prepregs
Master plugs and molds
Limited-run tooling
Sizing Chart
ENGLISH UNIT (in)
Products
Density (lbs/ft3 )
Height
Width
Length
FR-4718
18
12
48
96
FR-4730
30
11
24
96
FR-4740
40
11
24
96
METRIC UNIT (cm)
Products
Density (kg/m3 )
Height
Width
Length
FR-4718
288
31
122
243
FR-4730
481
28
61
243
FR-4740
641
28
61
203
Shown are maximum standard stock sizes based on density. Custom sizes are available. Cut sizes are available from 0.125 inches (3.175 mm) up to standard stock heights as listed above.
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