Trivalent blue passivate gives a bright metallic finish with a blue tint. The clear option will give approximately 12 hours to white corrosion in a salt spray test. If you need enhanced corrosion protection, then speak to us about our enhanced trivalent clear passivates.

What is trivalent blue passivation?

Trivalent blue passivate gives a bright metallic finish with a blue tint. The clear option will give approximately 12 hours to white corrosion in a salt spray test. If you need enhanced corrosion protection, then speak to us about our enhanced trivalent clear passivates.

What is a trivalent passivate?

Trivalent chromium passivation is used after zinc plating for enhancing corrosion resistance of parts. In the passivating process, the amount of dissolved metal ions (for example zinc and iron) in the passivation solution increases the longer the solution is used.

What is blue passivation?

Application. TRICOLITE BL 108 process is a single shot concentrated Trivalent Passivation process which provides instantly, an intense blue colour on zinc and zinc alloy platings which achieves excellent corrosion resistance.

What is trivalent chromate plating?

Trivalent chromium plating, also known as tri-chrome, Cr3+, and chrome (III) plating, uses chromium sulfate or chromium chloride as the main ingredient. Trivalent chromium plating is an alternative to hexavalent chromium in certain applications and thicknesses (e.g. decorative plating).

What does gold passivated mean?

Zinc plate or gold passivated (Interior screws) These types of screws have a thin protective coating and aren’t as hard wearing as other kinds of screws, so they’re used primarily for indoor use or protected undercover outdoor areas.

What is yellow passivation?

Yellow Zinc Plating refers to the color of the chromate that is applied after zinc has been deposited on to the surface of the part. Yellow chromate prevents the zinc from corroding and increases the overall protection of the finish. This finish provides a rainbow or iridescent appearance with dominant yellow tones.

What color is trivalent chromium?

Trivalent chromium electroplating processes have been commercially available since the mid 1970s. Processes are available today offering deposits with colors varying from gray-black to almost the blue- white appearance of hexavalent chromium.

What is the difference between hexavalent and trivalent chrome?

Trivalent chromium plating uses chromium sulfate or chromium chloride as its main ingredient, instead of chromium trioxide; making trivalent chromium less toxic than hexavalent chromium.

What is trivalent coating?

Trivalent conversion coatings is used on metals such as aluminum and zinc, and to a lesser extent copper, cadmium, silver, tin, and other metals and their alloys. Trivalent conversion coatings are used to passivate aluminum and as a sealer on metal parts after an iron or zinc phosphate metal finishing process.

What is the difference between trivalent and hexavalent plating?

The key difference between trivalent and hexavalent zinc plating is that the trivalent zinc plating process has a high efficiency with a uniform distribution than the hexavalent zinc plating process. Zinc plating is a common process of protecting a wide range of materials.

What is trivalent & hexavalent?

Can you use zinc and yellow passivated screws outside?

They should not be used outdoors or in damp locations.

What are trivalent passivates and silchrome plating?

In terms of visual appearance, Trivalent Passivates are a light blue colour, perhaps a little stronger in palette than a Natural Finish. Silchrome Plating provide Clear, Yellow, Black, Olive Drab and Trivalent passivates in conjunction with our Zinc Plating.

What is the difference between trivalent passivates and natural finish?

In terms of visual appearance, Trivalent Passivates are a light blue colour, perhaps a little stronger in palette than a Natural Finish. Silchrome Plating provide Clear, Yellow, Black, Olive Drab and Trivalent passivates in conjunction with our Zinc Plating. We are fully ISO 9001 and 14001 accredited and based in Leeds, West Yorkshire.

Is blue passivate the same as clear passivation?

Blue Passivate Most often when a drawing specifies ‘Blue’ they are most often actually referring to a Natural or Clear Finish. Any Passivation process will affect the colour of the component and there is no such thing as a completely clear or colourless finish. Natural Passivate instead has a very light and iridescent blue colour.

Why is my Blue trivalent passivate turning yellow?

Again, when comparing all of these potential factors for yellowing of your blue trivalent passivate, the primary cause that a plater can look to is high iron in the passivation bath and the number one cause of that is typically parts in the bottom of the tank.