Marking Stainless Steel - How Does it Work?

Stainless steel stands out for its durability and corrosion resistance, which makes it ideal for demanding applications. Because of these properties, when you need parts to carry serial numbers, batch codes, logos or traceability marks, you can't rely on simple coatings or paints.

You need markings that are permanent and corrosion-resistant.

Electrolytic marking is a precise, non-invasive process that uses an electrolyte solution and an electric current to etch the surface of stainless steel. Unlike mechanical engraving, it doesn’t remove large amounts of material or compromise the integrity of the part. Instead, it electrolytically makes a mark under the stainless' surface, creating a permanent, corrosion-resistant mark that won’t peel, fade, or weaken the metal.

This method is ideal for:

• Serial numbers and batch codes for traceability

• Logos and branding for product identification

• Compliance markings for regulated industries

Because the process works by electrolytically creating a mark under the material's surface, the stainless steel retains its protective passive layer, ensuring it maintains its resistance to corrosion.

How to electrolytically mark with a Weldbrush machine:

1. Set up your Weldbrush machine, connecting the power cable with the handle

2. Spread a small amount of NCMF1 marking fluid over the surface that you want to mark

3. Place your stencil onto this

4. Connect the marking adaptor to the handle

5. Connect the other end of the adaptor to the marking electrode

6. Wrap a marking felt around this electrode and secure with an o-ring

7. Turn on the Weldbrush machine and dip the electrode in NCMF1 marking fluid

8. Press and push over the stencil, ensuring that all areas are covered

9. Remove the stencil, spray the area with Stainless Steel Cleaner and wipe clean

Watch how it's done👉 Marking with a Weldbrush