BLACK SS - 50
For 304-316 Stainless Steel
 

Black SS-50 is a concentrated, rapid acting, chemical conversion liquid compound for blackening stainless steel parts by immersion at room temperature. The product is a mildly acidic solution containing no chromates, sulfides, cyanides, caustic or phenols.

Preparation of the Black-F solution:

Use an acid resistant container as the immersion tank. Plastic, plastic lined, glass, or rubber lined are suitable. Do not use an uncoated metal container. Black - SS - 50 should be used as is. Usually a period of 10 to 60 seconds is needed to produce an uniform gray/black finish. The immersion time can be shortened by using a stronger solution or lengthened by using a weaker solution.

Preparation for the blackening and sealing:

  • Clean the part with Cleaner 104.
  • Rinse with over flowing cold water.
  • Immerse parts in Black SS-50 solution for 10 to 60 seconds. Agitate the parts to break air bubbles and to assure solution contact with all surfaces. Plastic or plastic baskets should be used for small parts.
  • Rinse thoroughly with over flowing cold water, then wipe dry with cotton, brush, etc…

Solution Control:

The blackening process with Black -SS-50 is a chemical reaction between the solution and metal surface. Chemical activity is gradually diminished as the solution is used but may be restored to the desired strength by adding fresh concentrate. When immersion time necessary to produce the desired black in increased, add sufficient concentrate to reduce immersion time to your previous standard. Keep a record of additions to establish a bath history.

Caution:

Black SS-50 concentrate and process is mildly acidic. Precautions for handling this type of material should be observed (corrosive). Avoid contact with skin and eyes. Use protective clothing (aprons, face shield, rubber gloves) when handling chemical material. In case of contact with skin, flush area with large amounts of water, for eyes, flush with large amounts of water and get medical attention.
This solution should be considered toxic if taken internally!


The information stated herein is based on information and test we believe to be reliable. The accuracy or completeness thereof is not guaranteed. Since conditions of use are outside our control, user shall, before using, determine the suitability of the product for his intended use and user assumes all risk and liability whatsoever in connection therewith.