Brownells Nitre Blue Bluing Salt, 10 lb Bucket

Transform components and small pieces into a deep, rich, lustrous blue finish that is more durable and aesthetically pleasing than most cold blues. The procedure is straightforward - heat the salts to a temperature range of 570 deg F - 650 deg F. Note that the salts are used in their solid form and are not dissolved in water. Submerge the parts and observe the color change. Lower temperatures will result in a straw color, similar to that of older Luger parts. Additionally, these salts can be utilized for the drawing process during the heat treatment of springs and parts.