Improving galvanised surfaces, priming for painting or just as decorative protection?
There are many applications when you think of zinc spray and aluminium spray.
When is zinc better suited than aluminium and can I get a different appearance of the coating?
What is the difference between zinc and aluminium spray
Zinc spray (Pure zinc powder)
OKS 2511 Zinc spray is a cathodic corrosion protection based on high purity zinc powder and is suitable for ferrous metals. Zinc spray is used for the improvement of galvanised surfaces but also as an adhesion primer before painting. Applications include the protection of steel structures and air conditioning systems exposed to harsh environmental conditions. The application temperature is usually up to 400 gr C. After one spraying, a layer thickness of 20ym is usually achieved and usually this treatment should be done a couple of times to achieve a full protection. OKS 2511 with 70ym film thickness gives 500 hours protection in salt spray test.
Bright zinc (Zinc-aluminium powder combination)
OKS 2521 Bright zinc is a decorative anti-corrosion coating based on zinc and aluminium powders designed for the protection of ferrous metals. The product is used to improve hot-dip galvanised surfaces and is weldable. OKS 2521 has good abrasion resistance and can be painted. The product is also very quick-drying, which can be a good thing.
The application temperature is 240°C, slightly lower than OKS 2511 Zinc Spray. The same film thickness (20 ym) is achieved after one spraying but OKS 2521 has slightly less protection than OKS 2511. OKS 2521 with 80-100 ym layer thickness gives 240 hours protection in salt spray test.
Alumetallic (Pure aluminium powder)
OKS 2531 Alumetallic is also a decorative corrosion protection based on aluminium powder and is intended for the protection of ferrous metals. It is used for the improvement of hot-dip galvanised surfaces. This product can also be welded through. The product is fast drying and has good abrasion resistance. The application temperature of Alumetallic is from -50°C up to 180°C (temporarily up to 800°C). This product is optimally used together with OKS 2511 Zinc Protection. The layer thickness after one spraying is only 10 ym, but when OKS 2531 is optimally used in combination with zinc spray, a very good protection is usually achieved anyway. OKS 2531 with 50 ym layer thickness provides a full 480 hours of protection in salt spray tests.
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If you want to read more about the OKS products and how they can help you to a better and more cost-effective maintenance of your machinery, the brochure can be downloaded here.
If you want personal support, please call our product specialist Mats-Inge Ericsson 0708-887801
