Reference Tables and Property Charts

The reference tables and charts below contain properties and conversions that are commonly used when validating a light-curing process.


Hardness

 

Durometer Hardness Scales (Comparison Purposes Only)
OO A D Feels Like:
90 Formica®
80 Polycarbonate
70
58
46
90 39
85 33
80 29
75 25 Auto Tire Treads
70 22
65 19 Pencil Eraser
60 16
55 14
90 50 12 Pink Eraser
88 45 10
86 40
83 35
80 30 Rubber Band
76 25 Gummy Bear Candy
70 20
62 15
55 10
45



Temperature Conversion

 

To Fahrenheit F° = (9/5 x C°) + 32   |   To Centigrade C° = (5/9) x (F°-32)
°F °C °F °C °F °C °F °C
-65 -54 40 4 145 63 250 121
-60 -51 45 7 150 66 255 124
-55 -48 50 10 155 68 260 127
-50 -46 55 13 160 71 265 129
-45 -43 60 16 165 74 270 132
-40 -40 65 18 170 77 275 135
-35 -37 70 21 175 79 280 138
-30 -34 75 24 180 82 285 141
-25 -32 80 27 185 85 290 143
-20 -29 85 29 190 88 295 146
-15 -26 90 32 195 91 300 149
-10 -23 95 35 200 93 305 152
-5 -21 100 38 205 96 310 154
0 -18 105 41 210 99 315 157
5 -15 110 43 215 102 320 160
10 -12 115 46 220 104 325 163
15 -9 120 49 225 107 330 166
20 -7 125 52 230 110 335 168
25 -4 130 54 235 113 340 171
30 -1 135 57 240 116 345 174
35 2 140 60 245 118 350 177


Units Conversion

 

Length 1 meter = 100 centimeters = 1,000 millimeters = 106 microns = 1.094 yards = 3.281 feet = 39.37 inches
Area 1 m2 = 10,000 cm2 = 10.76 ft2 = 1,550 in2
Volume 1 liter = 1,000 mL = 1,000 cm3 = 0.001 m3 = 0.2642 gal = 1.0567 qt = 2.113 pt = 33.81 fluid oz = 0.3531 ft3 = 61.02 in3
1 gallon = 3.785 liters
Weight 1 kilogram = 1,000 grams = 1,000,000 milligrams = 35.27 ounces = 2.205 pounds
Speed 1 meter/min = 0.01667 meters/sec = 3.281 feet/min = 0.05467 feet/sec = 38.62 inches/min = 0.6560 inches/sec
Heat Transfer & Thermal Conductivity 1 Watt = 3.412 BTU/hr
1 W/m2°K = 0.5778 BTU/(Hr • Ft • °F)
Force 1 lb force = 4.448 Newtons
Pressure 1,000 PSI = 6.895 MPa = 70.307 kg/cm2

For a more complete list of unit conversions, visit www.onlineconversion.com.


Estimating Material Usage

 

Thickness of the Bond Line Gap or Coating Theoretical Area Covered by
1 Liter of Adhesive or Coating
0.002″ (51 μm) 30,500 in2 (212 ft2) (19.7 m2)
0.005″ (127 μm) 12,200 in2 (84.7 ft2) (7.88 m2)
0.010″ (254 μm) 6,100 in2 (42.4 ft2) (3.94 m2)
0.015″ (381 μm) 4,070 in2 (28.3 ft2) (2.63 m2)
Bead Size Theoretical Usage
(Length per Liter)
1/32″ (0.79 mm) 66,300 ft (20,200 m)
1/16″ (1.6 mm) 16,600 ft (5,100 m)
3/32″ (2.4 mm) 7,400 ft (2,300 m)
1/8″ (3.2 mm) 4,100 ft (1,200 m)
3/16″ (4.8 mm) 1,900 ft (580 m)
1/4″ (6.4 mm) 1,000 ft (300 m)
Common Calculations
Circumference Circle =diameter x π
Area Rectangle =length x width
Circle =radius2 x π
Cylindrical Surface =diameter x length x π
Volume Rectangular Solid =length x width x height
Sphere =4/3 x radius3 x π
Cylinder =radius2 x π x length

 

π is approximately 3.14159.


Viscosity

 

Approximate Viscosity in Centipoise (cP) and Mili-Pascals-Seconds (mPa•s) at Room Temperature Fluid Comparison
1 Water
80 Olive Oil
200 Motor Oil (SAE 30)
3,000 Honey
8,000 Molasses
65,000 Vaseline
100,000 Sour Cream
150,000 – 250,000 Peanut Butter


Intensity Conversion

 

Energy (mJ/cm2) = Intensity (mW/cm2) x Time (seconds)
Intensity (mW/cm2) = Energy (mJ/cm2) / Time (seconds)
1,000 mJ/cm2 = 1 Joule/cm2
1,000 mW/cm2 = 1 Watt/cm2
Intensity (uW/cm2) = Energy (uJ/cm2) / Time (seconds)