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Office Hours:
8:30 am to 5:30 pm Eastern Standard Time
Phone:
(770)279-8111
Toll Free:
(888)68-EAGLE
Fax:
770-279-0727
Mailing:
Eagle Abrasives, Inc. 4025 Steve Reynolds Blvd. Norcross, GA 30093
Email:
info@EagleAbrasives.com

GENERAL QUESTIONS:
Q. Where can I purchase Eagle Abrasives products?
Q. How can I become a distributor for Eagle Abrasives products?

TECHNICAL QUESTIONS:
Q. What's the meaning of Grit #?. Can you explain the Grading System?
Q. How is Micron Grading compared to P-Grade?
Q. Are imported sand papers, or "P" graded systems, always coarser?
Q. What does SUPER-TACK mean?

Q. Where can I purchase Eagle Abrasives products?

A. Please contact our office at 888-68-EAGLE for the nearest distributor in your area.


Q. How can I become a distributor for Eagle Abrasives products?

A. You may fax your request and detail information of your business to our office.
     A representative will contact you for further assistance.


Q. What's the meaning of Grit?. Can you explain the Grading System?  

A. Mineral grading (grit) refers to the number of openings within a defined area on a standard     control screen mesh used for grading.


Q. How is Micron Grading compared to P-Grade?

A.

Fepa "P" grit sizes for coated abrasives:

FEPA
(P-GRADE)
MICRON
MEAN
DIAMETER
ds 50
GRIT
NUMBER
MICRON
MEAN
DIAMETER
ds 50
P12 1815 P240 58.5 +/- 2
P16 1324 P280 52.2 +/- 2
P20 1000 P320    46.2 +/- 1.5
P24 764 P360    40.5 +/- 1.5
P30 642 P400       35 +/- 1.5
P36 538 P500    30.2 +/- 1.5
P40 425 P600 25.8 +/- 1
P50 336 P800 21.8 +/- 1
P60 269 P1000 18.3 +/- 1
P80 201 P1200 15.3 +/- 1
P100 162 P1500 12.6 +/- 1
P120 125 P2000    10.3 +/- 0.8
P150 100 P2500      8.4 +/- 0.5
P180 82    
P220 68    

Q. Are imported sand papers, or "P" graded systems, always coarser?

A.

Yes and No. It is true that almost all sand paper manufacturers around the world (except most of those in the United States) have adopted the Federation of European Producers of Abrasives (FEPA) grading system, also known as the "P" system. Most U.S. manufacturers have been using a grading system established by the American National Standards Institute (ANSI) for the Coated Abrasives Manufacturers Institute (CAMI, or U.S. System) which usually only refers to grades 12 to 600.

Under direct comparison, the systems are nearly identical and interchangeable for 220 and below. For 240 and above, the differences are greater as grit becomes finer.

Remember, this is only a basic comparison of manufacturers' methods of grading using particle size distribution of mineral. Coarseness and scratch pattern must also be determined by:

  1. Type and quality of grains
  2. Shape of grains
  3. Method of bonding
  4. Hardness of workpiece
In addition, "P" grading is "purer" than the U.S. method, containing fewer coarse and fewer fine particles resulting in a more uniform system. Therefore, "P" graded paper often has much finer scratch marks than the chart indicates.

Q. What does SUPER-TACK mean?

A. Super-Tack is Kovax's trade name for velour-backed (Hook & Loop) abrasive backing.


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