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Conversion of U.S. Mesh into FEPA |
|
U.S. Mesh |
FEPA |
| 16/18 |
D-1181 |
| 18/20 |
D-1001 |
| 20/25 |
D-851 |
| 25/30 |
D-711 |
| 30/35 |
D-601 |
| 35/40 |
D-501 |
| 40/45 |
D-426 |
| 45/50 |
D-356 |
| 50/60 |
D-301 |
| 60/70 |
D-251 |
| 70/80 |
D-213 |
| 80/100 |
D-181 |
| 100/120 |
D-151 |
| 120/140 |
D-126 |
| 140/170 |
D-107 |
| 170/200 |
D-91 |
| 200/230 |
D-76 |
| 230/270 |
D-64 |
| 270/325 |
D-54 |
| 325/400 |
D-46 |
|
Wide Range |
| 16/20 |
D-1182 |
| 20/30 |
D-852 |
| 30/40 |
D-602 |
| 40/50 |
D427 |
| 60/80 |
D252 |
|
|
Standard Table for Micron Sizes |
|
Size
Designation |
Normal
Size Range |
| 1/4 |
0-1/ 2 |
| 1/2 |
0-1 |
| 1 |
0-2 |
| 2 |
1-3 |
| 3 |
2-4 |
| 4 |
2-6 |
| 5 |
4-6 |
| 6 |
4-8 |
| 8 |
6-10 |
| 10 |
8-12 |
| 12 |
8-16 |
| 15 |
10-20 |
| 17 |
12-22 |
| 20 |
15-25 |
| 25 |
20-30 |
| 30 |
22-36 |
| 35 |
30-40 |
| 45 |
36-54 |
| 50 |
40-60 |
| 67 |
54-80 |
| Wide
Range |
| 60 |
264 |
| 45 |
620 |
| 30 |
2,046 |
| 15 |
16,960 |
| 9 |
78,600 |
| 6 |
262,000 |
| 3 |
2,050,000 |
| 1 |
62,000,000 |
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Number of
Particles per Carat |
|
Sieve Size
U.S. Mesh |
Micron Size |
Aprox.
no. of particles
per carat
(0.2 gm) |
| 16 |
1190 |
33 |
| 18 |
1000 |
57 |
| 20 |
841 |
97 |
| 25 |
707 |
160 |
| 30 |
595 |
282 |
| 35 |
500 |
460 |
| 40 |
420 |
770 |
| 45 |
354 |
1,334 |
| 50 |
297 |
2,080 |
| 60 |
250 |
3,240 |
| 70 |
210 |
6,140 |
| 80 |
177 |
10,400 |
| 100 |
149 |
17,140 |
| 120 |
125 |
20,920 |
| 140 |
105 |
49,400 |
| 170 |
88 |
83,400 |
| 200 |
74 |
140,000 |
| 230 |
63 |
252,000 |
| 270 |
53 |
384,000 |
| 325 |
44 |
660,000 |
| 400 |
37 |
1,130,000 |
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Conversion of Micron into US Mesh |
|
Micron |
U.S.
Mesh |
| 80-125 |
270/325 |
| 54-80 |
325/400 |
| 40-60 |
400/500 |
| 30-40 |
500/600 |
| 20-40 |
500/800 |
| 20-30 |
600/800 |
| 10-20 |
1200 |
| 8-12 |
1800 |
| 5-10 |
2200 |
| 4-8 |
3000 |
| 2-4 |
8000 |
| 1-2 |
13000 |
| 0-1 |
60000 |
| 0-1/2 |
100000 |
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Temperature |
|
Celsius |
Fahrenheit |
| 700 |
1,292 |
| 725 |
1,337 |
| 750 |
1,382 |
| 775 |
1,427 |
| 800 |
1,472 |
| 825 |
1,517 |
| 850 |
1,562 |
| 875 |
1,607 |
| 900 |
1,652 |
| 925 |
1,697 |
| 950 |
1,742 |
| 975 |
1,787 |
| 1,000 |
1,832 |
| 1,025 |
1,877 |
| 1,050 |
1,922 |
| 1,075 |
1,967 |
| 1,100 |
2,012 |
| 1,125 |
2,057 |
| 1,150 |
2,102 |
| 1,175 |
2,147 |
| 1,200 |
2,192 |
| 1,225 |
2,237 |
| 1,250 |
2,282 |
| 1,275 |
2,327 |
| 1,300 |
2,372 |
| 1,325 |
2,417 |
| 1,350 |
2,462 |
| 1,375 |
2,507 |
| 1,400 |
2,552 |
| 1,425 |
2,597 |
| 1,450 |
2,642 |
| 1,475 |
2,687 |
| 1,500 |
2,732 |
| 1,525 |
2,777 |
| 1,550 |
2,822 |
| 1,575 |
2,867 |
| 1,600 |
2,912 |
|
Christensen Sieves
Diamond Sizes |
|
Size |
Avg. no. of Round
Stones per carat |
| F |
128 |
| E |
106 |
| D |
84 |
| C |
77 |
| B |
70 |
| A |
62 |
| 1 |
58 |
| 2 |
50 |
| 3 |
40 |
| 4 |
30 |
| 5 |
25 |
| 6 |
20 |
| 7 |
15 |
| 8 |
11 |
| 9 |
9½ |
| 10 |
7 |
| 11 |
5 2/3 |
| 12 |
4 ½ |
| 13 |
3 ½ |
| 14 |
3 |
| 15 |
2 2/3 |
| 16 |
2 1/16 |
| 17 |
1 5/6 |
| 18 |
1 2/3 |
| 19 |
1 1/3 |
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| Metric
Conversion |
| Mass |
|
1 Kilogram = 2.2046 pounds |
| |
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Pressure / Stress |
|
1.0 kg/cm2 = 14.223 psi
100 psi = 7.03 kg/cm2
10.0 KPA (KN/M2) = 1.02kg/cm2
10.0 KPA (KN/M2) = 14.51 psi |
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| Length |
|
1 centimeter = 0.3937
inches
1 inch = 2.54 centimeters (25.4 mm.)
1 micron = 1/1000 mm |
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Source: Generally accepted in the industry. |
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