What Is Emery Paper?

According to different abrasive materials, there are a variety of emery paper, artificial emery paper, glass sandpaper and so on. Dry sandpaper (wood sandpaper) is used to polish the surface of wood and bamboo. Water-resistant sandpaper (water sandpaper) is used to polish the surface of metal or non-metallic workpieces in water or oil.

In actual use, the classification of sandpaper is not uniform.
Commonly used are 400 # 600 # 1000 # 1200 # 1500 # 2000 #.
For example, W10 stands for No. 04 sandpaper, 800 mesh. The specifications of other types of sandpaper are compared as follows:
Abrasive, micron particle size number
Sandpaper code
Size range (m)
280
1
~ 40
320 (M40 or W40)
0
40 28
400 (M28 or W28)
1
28 20
500 (M20 or W20)
2
20 14
600 (M14 or W14)
3
14 10
800 (M10 or W10)
4
10 7
1000 (M7 or W7)
5
7 5
1200 (M5 or W5)
6
5 3.5
1400 (M3.5 or W3.5)
7
3.5 3.0
1600 (M3 or W3)
8
3.0 2.5
1800 (M2.5 or W2.5)
9
2.5 2.0
2000 (M2 or W2)
10
2.0 1.5
2500 (M1.5 or W1.5)
1.5 1.0
3000 (M1 or W1)
1.0 0.5
3500 (M0.5 or W0.5)
0.5 finer
4000 (M0.1 or W0.1)
* The particle size number is expressed by mesh or particle size, and is the number of particles in an area of 1 inch * 1 inch.
Example: 1000, which means that the sand grain size is 25.4 microns.

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