RAMPF® WB-0691

Epoxy Board for Tools & Molds

Key Properties of Rampf WB-0691 include:

  • Very fine surface structure
  • Excellent machinability
  • Good dimensional stability
  • Heat Resistance up to 230°F

Typical Properties

ColorBlue
Density (ρ)43.1 lb/ft3 [0.69 g/cm3]
Hardness70 – 75 Shore D
Flexural Strength3,600 – 5,100 psi [25 – 35 MPa]
Compressive Strength7,300 – 8,700 psi [50 – 60 MPa]
Tensile Strength2,200 – 2,900 psi [15 – 20 MPa]
Coefficient of Thermal Expansion (CTE)(19 – 25) x 10-6 in/in°F [(34.2 – 45 ) x 10-6 m/m/°C]
Deflection Temperature, HDT212 – 230°F [100 – 110°C]

Available Sizes

2.0” x 19.7 x 59.1 (50mm x 500 x 1500)
3.0” x 19.7 x 59.1 (75mm x 500 x 1500)
3.9” x 19.7 x 59.1 (100mm x 500 x 1500)
5.9” x 19.7 x 59.1 (150mm x 500 x 1500)
7.9” x 19.7 x 59.1 (200mm x 500 x 1500)

2.0” x 24 x 60 (50.8mm x 610 x 1524)
3.0” x 24 x 60 (76.2mm x 610 x 1524)
4.0” x 24 x 60 (101.6mm x 610 x 1524)
6.0” x 24 x 60 (152.4mm x 610 x 1524)
8.0” x 24 x 60 (203.2mm x 610 x 1524)

Machining

Cutters:

Roughing – 1”(25.4mm) Hog Ball End Mill, 4-flute, HS Steel 8% Cobalt
Finishing – 5/8”(15.875mm) Ball End Mill, 2-flute carbide
Depth:

Roughing – varied from ¼”(6.35mm) to 2.5”(63.5mm) with 40% stepover
Finishing: 1/8”(3.175mm)deep leaving 0.002” (0.050mm) scallop height

Roughing speed: 1,600RPM ∙ Roughing Feed 40IPM
Finishing speed: 10,000RPM ∙ Finishing feed 100IPM

Safety

Good workplace ventilation is to be ensured during processing. At the same time, the employer’s liability insurance association’s industrial hygiene safety regulations regarding the handling of reaction resins and their hardeners are to be observed. Please take heed of the appropriate safety data sheets.

The material should be stored flat and in a dry place. Temperature variations should be avoided during storage and transportation.

The product should be machined at ambient room temperature (68-77°F (20-25°C)).

Applications

  • Lay-up tools for low temperature tooling prepegs
  • Vacuum forming molds
  • Medium temperature applications