Copper-sulfate can be used to test whether a ball is stainless steel or not. This solution consists of copper-sulfate crystals dissolved in a 6 percent solution of sulfuric-acid and water. A drop of this solution on the surface of a clean steel ball will immediately form a bright spot of copper plating. This solution will not affect any of the corrosive resistant materials within a two-minute period, but may react to hard ferritic or Martensitic stainless-steel after a long period of exposure.
8g of Copper Sulfate
500 ml of Distilled Water
Dissolved Together
2-3 ml of Sulfuric Acid
6 Minute Soak
Visual Inspection
Sample Test And Stainless Steel Balls
