Benefits of Ruspert coating screw

1. Low Processing Temperatures: The highest temperature during Ruspert coating will be under 200℃. The low temperature prevents metallurgic      changes from occurring in the metal substrate. It will maintain the mechanical properties of screws when processing. This is particularly  important for self drilling screw, self tapping screw and chipboard screw. Because we need to to ensure the tensile strength and hardness after coating to make sure it won’t effect the drilling ability.

2. Timber Preservative Resistance: The high moisture content and salt levels of treated timber will cause screws to corrode at a much faster speed. Ruspert’s high resistance to high moisture and salty conditions make it suitable for use in treated timber. Using a Ruspert coating on these screws will have a long life connection than zinc plated or dacromet screws.

3. Contact Corrosion Resistance: Since the free zinc layer is protected from physical contact with other metal surfaces by a non-conductive ceramic top layer, the free zinc layer only provides galvanic protection for the metal substrate. Which means screws coated with Ruspert will not sacrifice its zinc coating to protect the fastener outside the material. This eliminates any contact corrosion problems with other metals or metal-coated materials when used under wet and dry conditions.

Which one should I choose, Ruspert, Zinc plating or Dacromet?

Product with Ruspert coatings are often used with other zinc based coatings such as zinc plating and dacromet. As with all coatings, their choice depends on the application.

Zinc plating has good adhesion, but the thin coating (-5pm) means poor corrosion resistance, and is only suitable for indoor and low corrosion environment. That is why zinc plating is not recommended for treated timber(hardwood or softwood).

Dacromet coating has good adhesion and improve corrosion resistance, but the layer is susceptible to corrosion when in contact with other metals.

Ruspert’s excellent adhesion and corrosion protection make it suitable for applications requiring additional protective elements such as outdoor drilling screws, deck screws and wood screws.

RUSPERT is an environmentally friendly coating developed after Dacromet. RUSPERT not only has the advantages of Dacromet in terms of resistance to atmospheric corrosion, but is also harder than Dacromet, and the processed product is more resistant to damage from assembly, and there is no concern about hydrogen embrittlement of the treated workpiece because the process has the effect of helping to relieve the internal stress of the workpiece. It can be made into bright silver, gray, gray-silver, dark red, yellow, army green, black and so on. RUSPERT coatings are widely used in Europe and America for roads, vehicles, ships, hardware, telecommunications and other fields.
RUSPERT finish is composed of three layers: the first layer: metal zinc layer,? second layer: advanced anti-corrosion chemical conversion film, the third outer layer; baked porcelain surface coating.

Products with Ruspert coatings are often used in conjunction with other zinc-based coatings such as zinc plating and Dacromet. As with all coatings, their selection depends on the application.

The high moisture content and high salt content of treated wood can cause screws to corrode at a faster rate. Galvanizing has good adhesion, but the thin coating (-5pm) means poor corrosion resistance and is only suitable for indoor and low corrosive environments. This is why galvanizing is not recommended for treated wood (hardwood or softwood). That is why it is wise to choose screws with Dacromet and Ruspert coatings. Compared to Dacromet, Ruspert is available in a wider choice of colors and can achieve a better decorative effect.

Dacromet and Ruspert have many advantages over galvanized and hot-dipped zinc. Both Dacromet and Ruspert coatings have good adhesion and improved corrosion resistance. However, Dacromet is susceptible to corrosion when in contact with other metals. So Ruspert is more suitable for applications that require additional protective elements, such as outdoor drilling screws, deck screws and wood screws.Ruspert coatings have a longer life than Dacromet screws.

DD Fasteners supplies Ruspert coating screws with high quality, ask now.

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