Page 546 - IS-Rayfast Catalogue - Issue 9, 2017

Appendix
Formulas and Constants

Adhesives and Tapes
Useful data for adhesives, potting compounds and coatings.

Viscosity Comparison Typical Coverage
Approx. Viscosity Material Coverage Film Thickness
1 Water 300 F /Qt. 0.001”
2
10 Kerosene 150 F /Qt. 0.002”
2
2
100 Corn Oil 100 F /Qt. 0.003”
2
200 Maple Syrup 60 F /Qt. 0.005”
500 Castor Oil 45 F /Qt. 0.007”
2
1,000 Glycerin 30 F /Qt. 0.010”
2
3,000 Honey
Bead Length
10,000 Molasses
Bead Width Approx Length
50,000 Ketchup
1/4” 80 ft
250,000 Peanut Butter
3/8” 37 ft
1,000,000 Shortening
1/2” 21 ft
5/8” 13 ft
As dispensed from 11oz caulking cartridge

Hardness Durometer Conversion Table
Material Shore A Shore D Multiplication Factors
Gum Eraser 30 - Density
3
Pink Eraser 40 - lb / ft x 16.02 = kg/m 3
3
Rubber Stamp 50 15 lb / in x 0.016 = g/cm 3
Pencil Eraser 60 - Heat Loss
Rubber Heel 70 30 Btu / hr ft x 3.155 = W/m 2
2
Rubber Sole 80 - Btu / hr ft x 0.271 = g cal/hr cm 2
2
Printer Roller 90 - Thermal Conductivity
2
PVC 100 55 Btu in / ft ºF x 0.144 = W/m ºC
2
Fir Plywood - 78 W / mºC x 6.93 = Btu in/hr ft ºF
Hardwood - 86 Thermal Expansion
-8
-8
Glass - 90 x10 / ºF x 1.8 = x10 / ºC
Dielectric Strength
Volts/mil x 0.039 = kV/mm

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