Pasty mixture of hydrogen fluoride (hydrofluoric acid, hydrogen nitrate (nitric acid) and their salts.
Intended use: Pickling of stainless steel welding seams
Instructions for use
General notes: Please respect safety data sheet ad instructions for use. Reaction times and results depend on different factors. Practical tests with sample parts should be carried out to define the optimum parameters.
Preparation: Remove oil,grease,welding spray, coatings and adhesives.
Application: Apply evenly in a coating of approx. 2 min.
Reaction time: 30 to 120 minutes at an optimum ambient temperature between 22 to 25 degrees when using derustit 4020. Please consider loss of brilliance of +/- 10 degrees, reaction time may be halved or doubled.
Further treatment: thoroughly rinse treated parts with water until ringsing water is neutral and surfaces are acid-free.
Please note: Use water with a hardness of < 10 degrees dH in order to minimize water stains and lime residues!
Additional notes: Do not use at high temperatures or under direct sunlight.
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