HVOF Wear

Sample coatings were applied to bars of 4140 steel as follows:

• Nitrided-to approximately .007 - .010 inch depth
• Chrome plated - .002 - .003 - inch depth
• Plasma spray - tungesten carbide powder
• JK 558, Tribaloy T-800
• JK 591, Nistelle C

The cross-cylinder test uses a 1/2-inch diameter 6 percent cobalt tungsten carbide cutter blank rotating at 1,760RPM with a 15lb. load and a nitrogen wipe for a one-hour period. This test was performed by an independent laboratory.

RESULTS:

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