BEFORE
DRY METHOD
300 series stainless steel — treated area
Contamination removed and surface restored according to protocol.
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STAINLESS STEEL PASSIVATION AT ITS FINEST
Eliminate any risk of rust with Kemplus thanks to a simple, effective and environmentally friendly passivation treatment that complies with the highest standards.
OUR PASSIVATION KITS WITHOUT & WITH RINSE
KEMPLUS'S PASSIVATION KITS
Our sets offer everything needed for complete passivation, allowing you to test the effectiveness of the Kemplus's products. We also have dry passivation kits!
01
Begin by gently rubbing the surface with KPNOX T21 pads (1 pad per 30–45 ft2) using a circular motion for at least 3 minutes. Let the surface dry completely.
02
Next, scrub the surface with KPNOX T22 pads (1 pads per 15–30 ft2) using a circular motion for at least 5 minutes or until the rust has disappeared. Let the surface dry completely.
03
To neutralize, scrub the entire surface with KPNOX T23 pads (1 pad per
50–75 ft2) using a circular motion for at least 3 minutes before letting it dry.
04
Lastly, scrub the entire surface with KPNOX T24 pads until a white rag comes away clean; this means the surface is free of contaminants.
01
KPCLEAN, a pH-neutral degreaser, is sprayed over the entire surface and left for 10 minutes. Be sure to rinse well with water, and let dry before proceeding to the next step.
02
Apply a thick, uniform layer of KPNOX18 pickling gel onto unbrushed welds using a non-metallic brush. Allow the product to rest for 30 to 45 minutes before rinsing thoroughly with water. Let the surface dry completely.
03
Apply KPNOX11 gel (1 L per 1 m2) using a non-metallic brush or a stainless steel spray gun. Let the product rest for 30 minutes before rinsing the surface with a high-pressure water spray and allowing it to dry.
04
Lastly, perform a Ferroxyl test to detect the presence of iron residues. If the test is positive for contaminants, repeat the passivation step. If it is negative, simply clean the surface with 95% ethanol or deionized water.
OUR PASSIVATION METHODS
SEE OUR TECHNIQUES IN IMAGES AND VIDEOS
Each method documented by our team — before/after photos, field demonstrations and product tutorials.
PHOTO GALLERY
BEFORE / AFTER · FIELD RESULTS
PHOTOS OF OUR INTERVENTIONS
Click to see photos
BEFORE
AFTER
DRY METHOD
300 series stainless steel — treated area
Contamination removed and surface restored according to protocol.
BEFORE
DRY METHOD
300 series stainless steel — treated area
Contamination removed and surface restored according to protocol.
AFTER
DRY METHOD
300 series stainless steel — treated area
Contamination removed and surface restored according to protocol.
BEFORE
PASSIVATION WITH RINSE
300 series stainless steel — treated area
Contamination removed and surface restored according to protocol.
AFTER
PASSIVATION WITH RINSE
300 series stainless steel — treated area
Contamination removed and surface restored according to protocol.
BEFORE
Pickling and Passivation with Rinse
304 stainless steel — treated area
Contamination removed and surface restored according to protocol.
AFTER
Pickling and Passivation with Rinse
304 stainless steel — treated area
Contamination removed and surface restored according to protocol.
VIDEO DEMONSTRATIONS
TUTORIALS · FIELD · METHODS
OUR DEMONSTRATION VIDEOS
Product and field demonstrations
OUR PASSIVATION KITS IN VIDEOS
DRY passivation
PASSIVATION WITH RINSE
Passivation — Complete Guide
LEARN EVERYTHING ABOUT THE PASSIVATION OF STAINLESS STEEL
As we know, stainless steel is used in the manufacture of multiple equipment, in particular because of its great resistance and its ability to form a self-repairing protective layer. However, certain conditions can weaken this layer and promote surface corrosion. This is where passivation comes into play.
IN SUMMARY
This process involves treating the metal with certain acids to remove any traces of free iron from the surface and covering it with a layer of anti-corrosion oxide. Regular passivation prevents any damage.
Pro tips for successful passivation
01
TIP 1
Preparation
This process involves treating the metal with certain acids in order to remove any traces of free iron from the surface and covering it with a layer of anti-corrosion oxide. As this passive layer can become damaged over time, it is important to carry out regular passivation to prevent any damage.
02
TIP 2
Cleaning
Remove all carbon steel particles from various manufacturing or handling operations.
03
TIP 3
Treatment
Remove the oxide layer formed during heat treatments or welding operations.
04
TIP 4
Passivation
Carry out a treatment with nitric or citric acid complying with ASTM A380 and A967 standards to form a passive layer.
Certified standards
ASTM A380 and ASTM A967 standards in brief
Used globally and frequently elevated to the status of legislation by regulatory authorities. This is why, at Keplus, we are proud to respect these standards.
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