METAL

Stainless Steel

APLICABLE SPECIFICATION

QQ-P-35

TYPE ll- Medium temperatura nitric acid solution with sodium dichromate additive.
TYPE Vl .- Low temp. Nitric acid solution.
**TYPE Vll- Medium temp. Nitric acid solution.
**TYPE Vlll- Medium temp. High concentration nitric acid solution

NORMAL COATING THICKNESS AND COLOR APPEARANCE

No change in dimensions.

No change in appearance.

COMMENTS

Dissolves all traces of foreign metals such as pieces of iron particles,tool scrapings, chips, etc,. That will cause rusto r stain spots if they are not removed. A thin, transparent passive film forms over the surface and prevents this condition from ocurring. The presence of rust and / or heavy heat treat scale may necessitate a pre-pickle. Fort he 400 and precipitation hardening series of stainless steels, the proper heat treatment is very important to ensure complete passivation. Our inspection personnel conduct the required copper sulfate, salt spray, and wáter immersion inspection tests in our own testing department and chemical laboratory in accordance with MIL-STD-753 and ASTM B117. ( see TESTING)