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How does NP3 compare to Hard Chrome?

April 26, 2017Chrome compare hard np3

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How does NP3 compare to Hard Chrome?

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Hard Chrome is very hard, typically 70-74 Rockwell C scale. NP3 is 48-51 Rockwell C scale. However, Hard Chrome plates unevenly and typically builds on radiuses. Hard Chrome also has an adhesion of 12 to 15 thousand psi and little corrosion resistance. NP3 plates very evenly, is extremely corrosion resistant and has an adhesion of 30-60,000 psi! This is one of the reasons we can give it a LIFETIME guarantee against peeling and flaking.