Polyurethane Board for Tools and Molds

Key Properties of WB-1223 include:

  • Low wear of milling tools
  • Resistant to amine
  • Most proven working board on the foundry market
  • Resistant to dry ice cleaning
  • Good abrasion resistance

Typical Properties

Density (ρ)76.3 lb/ft3 [1.2 g/cm3]
Hardness75 – 85 Shore D
Flexural Strength10,000 – 12,000 psi [70 – 80 MPa]
Compressive Strength8,700 – 10,000 psi [60 – 70 MPa]
Coefficient of Thermal Expansion (CTE)(44 – 47) x 10-6 in/in°F [(79.2 – 84.6 ) x 10-6 m/m/°C]
Deflection Temperature, HDT176 – 194°F [80 – 90°C]

Available Sizes

1.2” x 20” x 40” (30.5mm x 508mm x 1016mm)
2.0” x 24” x 60” (50.8mm x 610mm x 1524mm)
3.0” x 24” x 60” (76.2mm x 610mm x 1524mm)
4.0” x 24” x 60” (101.6mm x 610mm x 1524mm)



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

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 70-140IPM
Finishing speed: 10,000RPM ∙ Finishing feed 100-200IPM


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)).


  • Foundry Pattern Plates
  • Hammer Tools
  • Checking Fixtures for Metal Parts