Black Oxide Finish for Steel

Black Magic Infusion is a black oxide finish for steel containing a blend of activators, rectifiers, catalysts, and penetrants that are designed to produce the darkest black available and to minimize the problem of red iron oxide adherence onto the work. According to the manufacturer, the solution's formulation also allows the user to decrease the immersion without a sacrifice in quality.

The solution can be used to blacken a range of carbon steel, alloy steels, and hardened steels. However, it will not blacken stainless steels, which are blackened with the manufacturer's Black Magic SS, or cast iron, which is blackened with Black Magic SS-C.

Pieces to be blackened may be processed in mild steel baskets and tumbling barrels, or hung on racks or hooks, depending upon the shape and weight and production requirements.

Operators must ensure that the solution tank is constructed of mild steel. The cleaning and rinse tanks may also be constructed of mild steel. Acid pickling tanks should be plastic or rubber-lined steel or rigid polypropylene.

Hubbard-Hall Incorporated, 563 South Leonard St., PO Box 790, Waterbury, CT 06725-0790. Tel: 203-756-5521. Fax: 203-756-9017.