Surtec Surface Treatment
What is the Surtec 650 surface treatment?
The Surtec 650 surface treatment involves applying a specific chemical solution by immersion, which reacts with the aluminum surface to form an extremely thin protective layer, typically less than one micron thick.
The unique feature of Surtec 650 lies in its ability to provide superior protection while maintaining the conductive properties of the aluminum surface. This characteristic is essential for many electrical and electronic applications, where the treated part must both withstand external stresses and contribute to the electrical continuity of the assembly.
Unlike anodizing, which creates an insulating layer, Surtec 650 preserves the metal’s conductivity, making it the preferred choice for electronic equipment enclosures, ground planes, and assemblies subject to electromagnetic compatibility requirements.
The advantages of this process
Corrosion protection
Surtec 650 significantly improves the corrosion resistance of aluminum parts, even in harsh industrial or marine environments.
Excellent starting point
The conversion coating provides an excellent bonding base for paints, liquid coatings, powder coatings, and adhesives applied subsequently.
Multi-alloy compatibility
The process can be applied to many types of aluminum, including machined, cast, and forged parts, as well as certain more demanding engineering alloys.
Electrical conductivity maintained
Unlike anodizing, this process preserves the metal’s conductivity, resulting in extremely low electrical resistance, which makes it ideal for applications requiring electrical continuity.
An environmentally friendly process that complies with regulations
In addition to its technical performance, this surface treatment is also valued for its lower environmental impact compared to other chemical treatments. It does not contain chromium VI, a harmful substance classified as a CMR that is often found in older similar processes such as Alodine 1200. This feature makes Surtec 650 safer for operators and more environmentally friendly.
The process is based on trivalent chromium and is fully compliant with the European REACH regulation and the RoHS Directive. It is therefore an ideal solution for industries seeking an effective and environmentally friendly surface protection method for aluminum and its alloys, without compromising on the proven performance of chromate conversion coating.
Why choose Wipelec for Surtec 650 surface treatment?
When you choose Wipelec for Surtec 650 surface treatment, you benefit from our recognized expertise in aluminum protection and passivation. Thanks to our thorough mastery of the process, we guarantee superior corrosion resistance, consistent quality, and a solution that meets current environmental standards. Our teams work closely with you toaddress the specific requirements of each industrial project.
Learn more about Surtec 650
Do you have questions about the Surtec 650 surface treatment? Find answers to the most frequently asked questions here!
What is the difference between Surtec 650 and Alodine 1200?
Alodine 1200 is a treatment that uses hexavalent chromium, a substance now considered harmful and gradually being restricted by European regulations.
Surtec 650, which is based on a newer trivalent chromium-based solution, offers an equivalent level of protection while complying with current environmental standards such as REACH and RoHS.
What is the thickness of the Surtec 650 coating?
The conversion coating formed by Surtec 650 is extremely thin, typically less than 1 micron. It therefore does not alter the dimensions of the parts and allows for compliance with the strict dimensional tolerances required in the aerospace, defense, and electronics industries.
Which industries use Surtec 650?
Surtec 650 is widely used in the aerospace, defense, rail, electronics, telecommunications, automotive, nuclear, and medical industries— anywhere where corrosion resistance and electrical conductivity are essential requirements.
What are the steps involved in the Surtec 650 surface treatment process at Wipelec?
The process includes chemical degreasing, pickling to remove the natural oxide layer, immersion in a Surtec 650 bath, rinsing with demineralized water, and then oven drying. Each step is subject to rigorous quality control.
What is the turnaround time for a Surtec 650 surface treatment?
Turnaround times depend on the volume of parts, the complexity of the specifications, and any additional processing required. For a quote and a customized turnaround time, please don’t hesitate to contact us!
Related surface treatments
Would you like to learn more about our other surface treatments? Find out more and explore all our solutions!
Are you planning a Surtec 650 surface treatment project?
Whether you are an engineering firm, an industrial contractor, or a subcontractor, our teams are here to listen to your needs, review your specifications, and offer a solution tailored to your technical requirements, production volumes, and deadlines.