How hard is hard chrome plating?
Then, is chrome plating hard?
Hard chrome plating is an electroplating process in which chromium is deposited from a chromic acid solution. Thickness of hard chrome plating ranges from 2 to 250µm. Micro-cracked chromium has a Vickers hardness of 800-1000 kg/mm 2, while crack-free chromium has Vickers hardness between 425-700 kg/mm 2.
Similarly, what is the difference between chrome and hard chrome? The primary difference between decorative chrome and hard chrome plating is the thickness of the chrome plating on the final product. Chrome plating uses an electrolytic process that applies chromium plating to a metal component in an electrolytic bath at a rate of about 25 to 30 microns per hour.
Then, what are the problems of hard chrome plating?
Hard Chrome Plating Defects:
- Dull / milky deposits: There are a number of potential causes for poor chrome appearance, but it is most commonly caused by a mismatch in current density and bath temperature.
- Burnt deposits:
- Poor or partial coverage:
- Poor adhesion:
- Excessive micro-cracking:
- Mud Cracking:
What is the thickness of chrome plating?
Hard chrome plating leaves a layer of chrome from 0.0008 to 0.0050 in. (from 0.020 to 0.127 mm) thick on the surface of the metal. In contrast, thin dense chrome plating has a thickness from 0.0002 to 0.0006 inch (0.005 to 0.015 mm). The thickness of chrome plating varies depending on the application.