SurTec 650

SurTec 650: The High-Quality Alternative to Anodizing Aluminum Parts. The SurTec surface treatment at PTM is used for technically demanding applications in which corrosion protection, adhesion, and electrical properties play a central role. The processes are designed in accordance with requirements defined, among others, by the aerospace industry. Final qualification, testing, and approval are always project-specific and carried out in close coordination with our customers.

SurTec 650 is a modern, chromium(VI)-free passivation treatment that reliably protects aluminum surfaces from corrosion while also providing an excellent foundation for subsequent coatings, paint finishes, or bonding processes. The process meets the highest quality standards and is used in numerous industrial sectors where safety, durability, and process reliability are essential.

The treatment of aluminum parts with SurTec 650 offers numerous technical and economic advantages:

• Chromium(III)-based pretreatment system without chromium(VI)
• Excellent corrosion protection properties, depending on the material, component design, and application profile
• Proven bonding substrate for subsequent coatings such as paints, adhesives, or powder coatings
• Thin, micro- to mesoporous, iridescent layer
• Good electrical conductivity of the surface, since no insulating oxide layer forms, as is the case with anodizing
• Particularly suitable for components with ground points, electrical contacts, or functional contact surfaces

Surface quality plays a crucial role, particularly for precision-machined CNC-milled, turned, and EDM-machined parts. By combining high-quality CNC machining with subsequent SurTec 650 treatment, we produce components that meet the highest standards.

High-quality corrosion protection and an optimal bonding surface for aluminum components

The demands placed on modern aluminum components are constantly increasing. In addition to precise manufacturing, reliable corrosion protection, high surface quality, and compliance with current environmental standards are crucial factors. With the SurTec 650 process, we offer you a high-performance and environmentally friendly surface treatment for aluminum and aluminum alloys.

The process meets the highest quality standards and is used in numerous industrial sectors where safety, durability, and process reliability are essential.

What is SurTec 650?

SurTec 650 is an innovative chemical conversion process for the surface treatment of aluminum. It produces a thin, transparent protective layer that shields the material from corrosion while also improving adhesion for subsequent processing steps. Unlike conventional chromate-based processes, SurTec 650 is completely free of chromium(VI) and meets current environmental and safety requirements.

As a result, this process is particularly well-suited for companies that are committed to sustainable and future-proof manufacturing processes.

Applications for SurTec 650-treated aluminum parts

SurTec 650 is used in numerous industries where aluminum components need to be permanently protected while also being prepared for further processing steps.

Typical applications include:

• Machinery and Plant Engineering
• Electrical Engineering and Electronics
• Automation Technology
• Aerospace
• Vehicle and Automotive Industry
• Medical Technology
• Telecommunications Technology

Quality and Process Reliability in Surface Treatment

Consistently high quality requires controlled processes and state-of-the-art equipment. That is why all treatment steps are precisely monitored and documented to ensure reproducible results. Your benefits:

• High process stability
• Consistent surface quality
• Reliable Corrosion Protection
• Documented Manufacturing and Quality Processes
• Reproducible results for mass-produced parts

We offer you a combination of precision CNC manufacturing, state-of-the-art surface finishing, and comprehensive technical consulting.