It is a decorative plating that gives a black film with a metallic luster.
It has a metallic black color, while decorative chrome plating has metallic white color.
Its black color is characteristic of an alloy of nickel and zinc. It is relatively inexpensive and is harder than zinc black chromate.
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You can get it in a metallic black color, aka 'gun metallic'.
Since the color does not change up to 300℃, it is effective in maintaining its blackness in high temperature environments.
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Stainless materials, copper materials, Iron materials, Aluminum materials
Exterior panels, hinges, mechanical parts such as metal fittings, and optical equipment parts.