Stop-off compounds

Posted on May 07, 2024

So, you want to heat treat your parts but not all of it! Why?, maybe subsequent processes such as machining, soldering or welding is more difficult post heat treatment.

Whatever the reason, Durferrit have a range of stop-off compounds designed to prevent the diffusion of hardening-increasing elements (Carbon (C), Nitrogen (N), Boron ) during thermochemical treatments.

Specific compounds have been developed for a range of heat treatment processes:

• Gas and low-pressure carburizing
• Gas nitriding and nitrocarburizing
• Powder carburizing and boriding

Here at Durferrit we are constantly developing products for advancements in performance & reducing our environmental impact.
We are proud to offer environmentally friendly water-based solutions free from organic solvents across our entire product range.

The characteristics of Durferrit stop-off compounds are:

• Optimal protection
• Easy application, by brush or dipping, the same way you would apply paint or vanish.
• Short drying time
• Good adhesion to the workpiece surface
• Good mechanical properties, such as impact and abrasion resistance
• Compatibility with furnace atmosphere, furnace lining and control equipment
• Physiological safety
• No corrosive effect on the workpiece surface
• No diffusion of components of the protective compound into the base material
• Easy cleaning of protected surfaces after heat treatment
• No excessive contamination of the quenching media
• Odour neutral

Please contact Durferrit UK with any queries & requests for quotation.