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.