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Product Description:
Sharperize is a thinly applied (.0002”-. 0004”) electro-deposited sacrificial coating that
offers extremely high corrosion protection. The application is so thin that it does not fill threads
and has very little effect on pitch, major, minor, and functional diameters, as well as lead, helix,
etc. Additionally, Sharperize finishes do not hold washers captive, or create recess fill
problems.
The Metal finishing industry is currently in the process of converting finishes from Hexavalent
Chrome to Trivalent Chrome because of environmental and European ELV concerns associated with Hexavalent Chrome.
Sharperize is leading the industry by taking this one step further and eliminating Chrome altogether.
This will eliminate the many problems associated with testing for Hexavalent Chrome, the costs incurred for this
test, and the potential for Trivalent Chrome to be mistaken for Hexavalent Chrome as finishes age (this is a common
problem referred to as “false positives”). Sharperize is now available in three environmentally
Chrome Free versions (Black, Clear and Yellow/Iridescent). All three versions offer outstanding corrosion
protection and meet or exceed the performance of previous Hexavalent Chrome versions.
Automotive executives, being so impressed with the corrosion protection, continue to specify
Sharperize to an increasing number of components. With the success of this finish, R. Sharpe Industries, Inc.,
has now authorized Erieview Metal Treating Co. of Cleveland Ohio to run the Sharperize process to handle
the ever-increasing demand for this finish of the future.
Typical Applications:
Sharperize has been in the market place for many years and has proven itself to be the most corrosion resistant, thin, electro-deposited coating available. Millions of parts have been processed in the yellow, black & clear (silver) for the automotive, mining, marine, hardware, aerospace and many other industries, all having excellent corrosion results.
Approved Specifications:
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This finish has a cycle test requirement and Sharperizing is the only approved finish at 60 cycles. Then number after the letter “A” represents the cyclic requirement. [Example A40 = 40 cycles] |
| GMW4205 |
Sharperize Chrome 0121 48-WCP/480-RR |
| GMW4700 |
Sharperize Tri-Chrome 3100 480-RR |
| GMW4700 |
Code “G” Sharperize Tri-Chrome 3103 480-RR. Code “G” has friction modifier requirement |
| GM |
(pending) GM6138-M Sharperize No Chrome 0124 |
| Ford |
*WSS-M2P189-A1 Thru A60 Sharperize No Chrome 0121 [Black] |
| Ford |
*WSS-M2P189-A1 Thru A60 Sharperize No Chrome 0323 [Clear] |
| Ford |
WSS-M21P25-B1 Sharperize No Chrome 0121 500-WC/1000-RR |
| Ford |
WSS-M21P25-B2 Sharperize No Chrome 0323 500-WC/1000-RR |
| Chrysler |
(pending) [PS-8955 & PS-10180] |

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Forest City utilizes a variety of coatings that provide long-lasting resistance to galvanic corrosion in virtually any environment.
Additionally, Forest City’s use of innovative coating systems provides improved edge coverage for increased corrosion protection on the threads and heads. |