FINISHING TREATMENTS

These treatments serve the dual purpose of protecting the screws against rust and corrosion, guaranteeing reliability in time and giving an aesthetic appearance suitable for its various uses.

All the Mustad treatments are carried out in full respect of the environment, in compliance with the RoHS and Reach standards, and directive 2000/53 (end-of-life vehicles) and are free of chromium (VI).

AESTHETIC TREATMENTS

These treatments perform a mainly aesthetic function.
They are used where the colour of the finish must match the hardware elements to be fixed.

TREATMENT	APPEARANCE	APPLICATION
BRONZING Electrolytic copper coating with bronzing chemical oxidation and protective oiling.		Hardware elements for furniture. Screwing into dark coloured wood.
BRASS PLATING Electrolytic coating of copper, nickel and brass with passivation and protective lacquer.		Brass plated hardware elements (handles, plates, etc.).
NICKEL PLATING Galvanic treatment of nickel on copper.		Nickel plated hardware elements (handles, hinges for furniture, etc.).

PROTECTIVE HIGH-RESISTANCE TREATMENTS

The main feature of these treatments is to protect the screws against rust and corrosion, guaranteeing reliability in time.
The parameter used to express the resistance of the treatments to corrosion is the number of hours the part remains in the salt spray chamber before red rust appears. The tests are carried out as laid down in the reference standard UNI EN ISO 9227.

TREATMENT	APPEARANCE	APPLICATION
BLACK GALVANIZING Corrosion resistance in salt spray: > 72 hours. EN 1670 standard grade 2.		Moderate corrosion resistance, recommended for aesthetic applications.
WHITE ZINC PLATING 100 HOURS Corrosion resistance in salt spray: > 100 hours. EN 1670 standard grade 3.		High corrosion resistance, recommended for outdoor use in the presence of damp due to rain or dew.
CHROMITING® Corrosion resistance in salt spray: > 240 hours. EN 1670 standard grade 4.		Very high corrosion resistance, recommended for outdoor applications, even in extremely harsh environments.
GEOMET® Grey coating. Corrosion resistance in salt spray: > 480 hours. EN 1670 standard grade 5.		Exceptionally high corrosion resistance, recommended for outdoor applications, also in extremely harsh conditions and for prolonged exposure to corrosive agents.
SILVERPLUS® Grey coating, sealed with scratchproof treatment. Corrosion resistance in salt spray: > 1,000 hours. EN 1670 standard grade 5.		Exceptionally high corrosion resistance, recommended for outdoor applications, even under extremely harsh conditions and for prolonged exposure to corrosive agents.
NEROPLUS® Black coating, sealed with scratchproof treatment. Corrosion resistance in salt spray: > 1,000 hours. EN 1670 standard grade 5.		Exceptionally high corrosion resistance, recommended for outdoor applications, even under extremely harsh conditions and for prolonged exposure to corrosive agents.