Acceptable temperature range for applied Hard Chrome
A discussion started in 2004 but continuing through 20192004
Q. I am looking for some information on operating temperatures that the applied hard chrome is able to handle before braking down. Is there any information on this ? I have been looking at a few places but can't find them. Thanks for the help !Mike Deye
plating shop - Toledo , Ohio
In higher temperature than 400 °C reduces the hardness, with temperatures up to 800 °C will show a hardness around 200-250 Hv. Also the fatigue strength reduces. The deposit goes from grey colour to a green oxide.
3rd Generation in Plating
Consultant - Arvika, Sweden
A. Hard chrome plating looses 10% of its hardness at 200 °C, 25% at 300 °C, 40% at 400 °C, over 50% at 500 °C. Beyond that it is a long road to melt it. I don't understand what you mean by "break it down", but it certainly is not considered an excellent choice for high temperature applications, specially in heavy layers since its cracked structure exposes the substrate with all sort of consequences.Guillermo Marrufo
Monterrey, NL, Mexico
Properties of teflon only good for 600 °FFebruary 12, 2019 -- this entry appended to this thread by editor in lieu of spawning a duplicative thread
Q. I am in need of a tough coating with high lubricity and a temperature range up to 600 °F.
Mechanical Engineer - Hicksville, ohio, USA
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