User Guide

MCS 202188
Substrate/Coating Abrasion Tests
Various sealants were applied and cured to a number of coatings and substrates. The sealants were then
removed with the SR Radial Bristle Discs and the coatings and substrates inspected for damage.
Results are as follows:
Tool Sealant Removed Or
Coating/Substrate RPM Dwell Time on Surface Results
Cladding on 0.032" 2024 T3 18,000 30 seconds No cladding penetration per
SAE AMS 4872 Section 5.2
BMS 10-60 Topcoat 18,000 PS 890-B-2 and Reduction in gloss, no
PR 1422-B-2 penetration through coating
MIL-C-83286 Gray high 18,000 PS 890-B-2 and Reduction in gloss, no
gloss PR 1422-B-2 penetration through coating
MIL-C-27725 18,000 PS 870-B-2 and Reduction in gloss, no
PR 1422-B-2 penetration through coating
3M PR520 Epoxy on carbon 18,000 PR 1422-B-2 No visible damage to
fiber weave composite
3M PR500 Epoxy on carbon 18,000 PR 1422-B-2 Composite damaged- raised
fiber weave fibers visible
3M PR500 Epoxy on carbon 12,000 PR 1422-B-2 No visible damage to
fiber weave composite
Written By: D. L. Morrison/D. Holmes
All statements, technical information and recommendations contained herein are based on tests 3M believes to be reliable, but the accuracy or
completeness thereof is not guaranteed, and the following is made in lieu of all warranties expressed or implied: Sellers and manufacturers only
obligation shall be to replace such quantity of the product proved to be defective. Neither seller nor manufacturer shall be liable for any injury,
loss or damage, direct or consequential, arising out of the use of or inability to use the product. Before using, user shall determine the suitability
of the product for his own intended use and user assumes all risks and liability whatsoever in connection therewith. No statement or
recommendation not contained herein shall have any force or effect unless in an agreement signed by officers of seller and manufacturer.